emergency lighting<\/a> controlgear. If the datasheet omits the frequency, assume 50Hz only and confirm for 60Hz markets such as Saudi Arabia or parts of Latin America.<\/p>\nHow to Read the Driven Load and DC Output Window<\/h3>\n “Driven load 3-25W” with a “DC 9-42V 350mA” output means the driver delivers constant current, not constant voltage. The luminaire LED array must fall within that voltage window at the stated current. A 10W LED module running at 350mA would sit at roughly 28.5V\u2014comfortably inside 9-42V. If your LED array needs 48V, this driver cannot run it. For high-bay emergency conversion, look for “full power output” drivers rated 25-60W with a 20-60V or higher window; these maintain 100% lumen output in emergency mode rather than dropping to 30% or 50%. Ask the supplier for the discharge test record showing actual lumen maintenance at 90 minutes, 2 hours and 3 hours, not just the battery voltage curve.<\/p>\n
How to Read Emergency Output in Lumens and Percentage<\/h3>\n EN 1838 mandates minimum illuminance on escape routes: 1 lux on the centreline, 0.5 lux over the full width. The percentage figure on the datasheet\u201430%, 50%, 100%\u2014tells you whether the emergency inverter is sized for visibility or for full task continuation. A hospital operating theatre or A&E corridor needs 100% maintained output; a school storeroom may accept 30% if the escape route calculation still meets 1 lux. The lumen figure must be paired with the luminaire’s light distribution; 300lm from a wide-beam exit sign face is different from 300lm from a narrow-beam twin spotlight. Request the photometric file (.ldt or .ies) with emergency mode output, not just normal mode.<\/p>\n
How to Read Battery Chemistry Voltage and Capacity<\/h3>\n NiCd 3.6V 1200mAh delivers roughly 4.3Wh nominal. At 80% depth of discharge and inverter efficiency of 85%, usable energy is about 2.9Wh\u2014enough for 90 minutes at roughly 1.9W LED load. This is the entry-level chemistry; it tolerates trickle charging but contains cadmium, which triggers RoHS restrictions and waste-battery handling costs in the EU. Li-ion 18650 7.4V 2200mAh (two cells in series) yields 16.3Wh nominal, roughly 11Wh usable, supporting 2 hours at 5W or 90 minutes at 7W. LiFePO4 12.8V 3000mAh in a 4S1P configuration gives 38.4Wh nominal, roughly 30Wh usable, enabling 3 hours at 10W or full-power 25W output for 90 minutes. LiFePO4 carries lower thermal runaway risk than Li-ion NMC, but the nominal voltage (3.2V per cell) requires a driver specifically matched to the lower discharge curve. Ask for the cell brand and model: A-grade Lishen, EVE or BAK cells carry full traceability; no-name repackaged cells may not.<\/p>\n
How to Read Charge Time and Cycle Life<\/h3>\n “Charge time 24 hours” on a NiCd pack means the trickle-rate charger is sized small to save cost; the battery spends most of its service life at 90-100% state of charge, which accelerates memory effect. “6-8 hours to 100%” on LiFePO4 implies a CC-CV charger stage, typically 0.5C to 1C rate. Cycle life figures assume standard test conditions: 25\u00b0C ambient, 80% depth of discharge, 0.2C discharge rate. In a 40\u00b0C plant room or with daily self-test cycling, actual life may halve. Request the supplier’s ageing test records: 28 days at 40\u00b0C and 90% humidity is a common accelerated ageing screen for emergency driver electronics.<\/p>\n
How to Read Test Facility and Wiring Mode<\/h3>\n Manual test key: a physical switch or pin that forces battery discharge. Compliant with EN 60598-2-22 but requires a maintenance visit every month and annual duration test under BS 5266-1. Self-test per EN 62034: the driver automatically exercises the battery for a short period at intervals, reporting fault via LED indicator. DALI-2 test facility: addressable over the DALI bus, with status readable by building management software. Maintained wiring: the emergency unit receives permanent mains and switches the LED between normal driver and emergency inverter via a changeover relay. Non-maintained: the unit charges in standby and only activates when mains fails. Maintained costs more in cable and switching but allows the same luminaire to serve normal and emergency duty; non-maintained requires separate emergency luminaires or combined normal\/emergency fittings with internal changeover.<\/p>\n
How to Read IP IK Rating and Ambient Temperature<\/h3>\n IP20: touch-safe, dust-protected, no water resistance. Acceptable for internal driver cavities in dry corridors. IP65: dust-tight, protected against water jets. Required for hospital kitchens, school changing rooms, external canopies. IP66: dust-tight, protected against powerful water jets. IK02: impact resistance 0.2 joule (roughly a 10cm drop of 200g). IK07: 2 joule, equivalent to a 500g mass dropped from 40cm\u2014minimum for public areas with risk of vandalism. IK08: 5 joule. Ambient temperature range -20\u00b0C to +50\u00b0C is the practical limit for LiFePO4; below 0\u00b0C discharge efficiency drops, and above 45\u00b0C calendar ageing accelerates. NiCd tolerates wider temperature but at lower energy density. For Middle East projects, confirm the supplier has run discharge duration tests at 50\u00b0C ambient, not just 25\u00b0C.<\/p>\n
How to Verify a Real Manufacturer From a Trading Office<\/h3>\n In-House or Partnered SMT and Assembly Capacity<\/strong><\/p>\nAsk for photos with date stamps of the SMT line, reflow oven and AOI station. A real manufacturer handles PCB assembly for the driver board and battery management system in-house or through a controlled partnership with traceable work orders. A trading office sources finished drivers from multiple anonymous workshops and cannot guarantee firmware revision consistency. Request the firmware version loaded on the sample and confirm it matches the production batch records.<\/p>\n
Battery Sourcing and Traceability<\/strong><\/p>\nDemand the cell manufacturer’s specification sheet and the UN 38.3 test report for the exact cell model, not just the finished battery pack. The report should show test reports for T1-T8 (altitude simulation, thermal, vibration, shock, external short, crush, overcharge, forced discharge). Ask whether the supplier assembles battery packs in-house with spot-welded nickel strip and PCM protection, or receives pre-built packs from a third party. In-house assembly with documented welding parameters (current, duration, pressure) indicates process control.<\/p>\n
Discharge and Duration Test Records<\/strong><\/p>\nA manufacturer maintains ageing and duration test stations: load banks that cycle battery packs through full discharge at rated current while logging voltage, temperature and lumen output. Ask for the test protocol document and a sample record showing batch number, test date, ambient temperature, initial and final lumen reading, and pass\/fail against the rated duration. Trading offices rarely have these records; they rely on supplier assurances.<\/p>\n
Ageing and Hipot Test Stations<\/strong><\/p>\nHipot (high potential) testing applies 1500V AC or 2121V DC between input and output for 60 seconds per EN 61347. Ageing runs production units at 40\u00b0C for 4-8 hours before final test. Request the station capacity: “two hipot testers, 500 units per day” is a concrete answer. “We have strict quality control” is not.<\/p>\n
Third Party Test Reports for the Destination Market<\/strong><\/p>\nDo not accept a generic CE certificate. Ask for the test report number, testing laboratory name, and standard list: EN 60598-2-22 for luminaires, EN 61347-2-7 for emergency controlgear, EN 62034 for self-test systems, EN 55015 for EMC. For UKCA, the same standards apply but the notified body or approved body designation differs post-Brexit. For UL 924 entry to North America, the report must list the specific model number. For AS\/NZS 2293 for Australia and New Zealand, require the certificate of conformity from an accredited certification body. A trading office forwards whatever the workshop provides; a manufacturer maintains a register and can explain which models share a platform and which required separate testing.<\/p>\n
Sample Lead Time and Payment Structure<\/strong><\/p>\nSample lead time under 7 days from confirmed specification suggests stocked finished goods or trading office buffer stock. A manufacturer quoting 10-15 days for sample build is realistic: PCB fabrication 2-3 days, SMT 1-2 days, assembly and test 2-3 days, battery pack build and integration 2-3 days. Payment structure: 30% T\/T deposit, 70% against copy of bill of lading is standard for first orders. A trading office may demand 50% or 100% upfront because they lack credit with their supply base. Letters of credit (L\/C at sight) are acceptable for orders above $30,000 but add $400-800 in bank charges; manufacturers with export experience handle L\/C routinely, trading offices often resist the documentation burden.<\/p>\n
After-Sales Engineering Capability<\/strong><\/p>\nAsk who reviews your luminaire’s LED specification to confirm compatibility with their emergency driver. A manufacturer’s application engineer requests the LED forward voltage curve and normal driver output characteristic, then calculates the emergency inverter duty cycle and expected lumen maintenance. A trading office forwards your email to their supplier and returns a yes\/no answer after 48 hours. For DALI-2 integration, ask for the DALI product test certificate from the DALI Alliance; even if the supplier is not yet certified, they should know the registration process and timeline.<\/p>\n
Trade Terms and Export Practicalities<\/h3>\n FOB CIF CFR EXW<\/strong><\/p>\nEXW (Ex Works): you collect from the factory door, arrange all export clearance, ocean freight and import duty. Lowest supplier price, maximum buyer logistics burden. FOB (Free On Board): supplier delivers to port and loads vessel; you pay ocean freight and insurance. Standard for first-time relationships. CFR (Cost and Freight): supplier pays freight to destination port; risk transfers at loading, so you insure the transit. CIF (Cost Insurance Freight): supplier arranges freight and marine insurance; convenient but the insurance terms may be minimal. For school and hospital projects with tight handover dates, FOB with your own freight forwarder gives control; CIF with a nominated forwarder adds 5-10% to the landed cost but reduces coordination.<\/p>\n
Payment Terms<\/strong><\/p>\nT\/T (Telegraphic Transfer): 30% deposit, 70% against B\/L copy is standard. For repeat orders, 30\/70 with 60-day open account may be negotiable after 12 months of clean delivery. L\/C (Letter of Credit): required by some Middle Eastern and African buyers for orders above $50,000. Confirms bank credit standing but adds 1-2% cost and strict document compliance; a discrepancy in the packing list description can delay release. For samples under $500, PayPal or Alibaba Trade Assurance is common; manufacturers accept these, trading offices prefer them.<\/p>\n
HS Code and Marking<\/strong><\/p>\nEmergency lighting controlgear falls under HS 8504.40 (static converters) or 8539.50 (lighting fittings with built-in controlgear), depending on configuration. Incorrect classification delays customs clearance. CE marking is mandatory for EU entry; the supplier must provide the Declaration of Conformity with the applicable standard list and responsible person’s EU address. UKCA marking replaces CE for Great Britain (England, Scotland, Wales); Northern Ireland maintains CE under the Windsor Framework. A supplier claiming UKCA readiness should show the UK-approved body number or self-certification route per the relevant SI.<\/p>\n
UN 38.3 and Battery Transport<\/strong><\/p>\nLithium batteries\u2014Li-ion and LiFePO4\u2014require UN 38.3 testing before transport by air, sea or road. The test summary must accompany shipments; IATA rules for air freight limit lithium ion cells to 30% state of charge and require Class 9 hazardous material labeling. IMDG Code for sea freight requires dangerous goods declaration with proper shipping name “LITHIUM METAL BATTERIES” or “LITHIUM ION BATTERIES” as applicable. Ask the supplier whether they ship batteries installed in equipment, packed with equipment, or separately; each triggers different packaging and documentation rules. NiCd batteries are not lithium but carry cadmium hazard classification for waste transport.<\/p>\n
Packing List and Certificate of Origin<\/strong><\/p>\nThe packing list must match the commercial invoice and B\/L: carton count, gross\/net weight, dimensions per carton, battery count and watt-hour rating. For palletised shipment, specify IPPC-ISPM15 treated wood or plastic\/composite pallets; many EU ports reject untreated wood. Certificate of Origin (C\/O) from the China Council for the Promotion of International Trade (CCPIT) or local customs authority may be required for preferential tariff treatment under ASEAN-China, RCEP or bilateral agreements. A manufacturer generates this from their export licence and production records; a trading office obtains it through their exporter of record, adding delay and cost.<\/p>\n
What These Specifications Cost and How Lead Time Scales<\/h3>\n Entry-level NiCd drivers at 3-10W with manual test and IP20 housing run roughly $4.50-7.00 FOB Shenzhen at 500-unit MOQ. Mid-range Li-ion 18650 systems with self-test, IP65 and 2-hour duration at 10-25W sit at $12.00-18.00. High-specification LiFePO4 full-power drivers with DALI-2, IP66, 3-hour duration and 25-60W output range from $28.00-45.00 depending on battery configuration and relay specification.<\/p>\n
Lead time from confirmed order: 15-20 days for entry-level with stocked PCBs, 25-35 days for mid-range with battery pack build, 35-45 days for high-specification with custom output voltage window or non-standard battery arrangement. Sample lead time: 10-15 days for standard builds, 20-25 days if the LED load compatibility review requires custom firmware. First-order tooling or label plate charges apply only for private branding or custom enclosure colours; standard Hymark housings carry no tooling fee.<\/p>\n
The trade-off between entry-level and high-specification is not just purchase price. A \u00a36 NiCd driver replaced every 3 years because of cycle degradation costs more over 10 years than a \u00a335 LiFePO4 unit surviving 8 years, before adding labour for access, disposal and compliance testing. For schools with 500 fittings and 10-year maintenance contracts, the higher upfront specification reduces life-cycle cost; for speculative new-build housing with 2-year warranty obligations, entry-level may suffice.<\/p>\n\nSMT and assembly stage of the Emergency Lighting production line<\/figcaption><\/figure>\nEmergency Lighting Price and What Drives It<\/h2>\n \n\n\nClass<\/th>\n Typical Rating or Output<\/th>\n Duration or Runtime<\/th>\n Indicative FOB USD<\/th>\n<\/tr>\n<\/thead>\n \n\nBasic bulkhead emergency fitting<\/td>\n 150\u2013250 lm, ~10% of normal<\/td>\n 90 min<\/td>\n 4.50\u20137.00<\/td>\n<\/tr>\n \nLED exit sign 2.4W maintained<\/td>\n 30\u201350 lm face illumination<\/td>\n 90 min\u20133 hr<\/td>\n 6.00\u201310.00<\/td>\n<\/tr>\n \nLED emergency twin spotlight 2\u00d73W<\/td>\n 400\u2013600 lm total, 100% output<\/td>\n 90 min\u20133 hr<\/td>\n 12.00\u201320.00<\/td>\n<\/tr>\n \nEmergency driver for LED panel 20\u201340W<\/td>\n 8\u201315W emergency load, 40\u201350% lumen maintenance<\/td>\n 90 min\u20133 hr<\/td>\n 18.00\u201332.00<\/td>\n<\/tr>\n \nFull-power emergency driver 50\u2013100W<\/td>\n 50\u2013100W maintained, 100% output<\/td>\n 90 min\u20132 hr<\/td>\n 45.00\u201385.00<\/td>\n<\/tr>\n \nDALI self-test emergency module<\/td>\n 10\u201325W load, programmable test cycles<\/td>\n 90 min\u20133 hr<\/td>\n 35.00\u201360.00<\/td>\n<\/tr>\n \nWeatherproof IP65 emergency bulkhead<\/td>\n 300\u2013500 lm, polycarbonate diffuser<\/td>\n 90 min\u20133 hr<\/td>\n 14.00\u201324.00<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nPrices assume single-colour cartons, Shenzhen\/Guangzhou FOB port, MOQ 500\u20131000 pieces, and exclude destination duties, VAT and clearance. Lithium-chemistry products incur UN 38.3 documentation and often require sea freight rather than passenger air, which affects both freight cost and lead time.<\/p>\n
Battery Chemistry and Cell Sourcing<\/h3>\n The battery pack typically represents 25\u201335% of the ex-factory cost for a self-contained emergency fitting. Buyers should ask suppliers to state the exact cell model and factory of origin.<\/p>\n
\n\n\nChemistry<\/th>\n Nominal Voltage<\/th>\n Common Capacity<\/th>\n Cycle Life<\/th>\n Charge Time<\/th>\n Notes<\/th>\n<\/tr>\n<\/thead>\n \n\nNiCd 3-cell stick<\/td>\n 3.6V<\/td>\n 600\u20131500 mAh<\/td>\n 300\u2013500 cycles<\/td>\n 16\u201324 hr<\/td>\n Lower upfront cost; memory effect; restricted in EU under Battery Directive for new designs<\/td>\n<\/tr>\n \nNiMH 3-cell stick<\/td>\n 3.6V<\/td>\n 1200\u20132400 mAh<\/td>\n 400\u2013600 cycles<\/td>\n 14\u201320 hr<\/td>\n Intermediate cost; moderate temperature tolerance<\/td>\n<\/tr>\n \nLi-ion 18650<\/td>\n 3.7V<\/td>\n 2000\u20133500 mAh<\/td>\n 500\u2013800 cycles<\/td>\n 4\u20138 hr<\/td>\n Higher energy density; requires protection PCB; UN 38.3 mandatory for transport<\/td>\n<\/tr>\n \nLiFePO4 cylindrical<\/td>\n 3.2V<\/td>\n 1500\u20133000 mAh<\/td>\n 1500\u20132500 cycles<\/td>\n 3\u20136 hr<\/td>\n Best cycle life and thermal stability; 20\u201340% cell cost premium over Li-ion<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nTraceability matters. A trading office will often source cells from the spot market; a manufacturer with in-house assembly should produce cell purchase orders, incoming inspection records for voltage and internal resistance, and batch-level discharge test data. Ask for a factory tour video showing the battery assembly station with spot-welding equipment and cell barcode scanning.<\/p>\n
Driver Electronics and Inverter Stage<\/h3>\n The emergency driver or inverter module converts battery DC to the regulated output the LEDs require during mains failure. Key parameters to specify:<\/p>\n
\nOutput window<\/strong>: 9\u201342V DC at constant current, typically 150\u2013350 mA for linear LED strips; 25\u201380V DC at 300\u2013700 mA for panel and high-bay drivers<\/li>\nInput voltage range<\/strong>: AC 85\u2013265V for wide-market designs; AC 220\u2013240V for UK\/Europe-only; AC 100\u2013277V for North America and Middle East<\/li>\nChangeover relay<\/strong>: electromechanical or solid-state switch with <0.5 s transfer time to meet EN 1838 continuity requirements<\/li>\nTest facility<\/strong>: manual test key (basic), automatic self-test to EN 62034 (monthly function, annual duration), or DALI-2 integrated test reporting with fault logging<\/li>\n<\/ul>\nThe inverter PCB with transformer or switched-mode inductor, changeover relay, and control MCU represents 15\u201322% of product cost. Designs omitting the relay and relying on passive diode switching save $1.50\u20133.00 but fail the <0.5 s transfer requirement under EN 60598-2-22.<\/p>\n
Enclosure Hardware and Thermal Design<\/h3>\n Polycarbonate diffusers cost $0.80\u20132.50 depending on UV stabiliser grade and optical pattern. Die-cast aluminium backplates for IP65 bulkheads add $3.50\u20136.00 over ABS. Gasket material (silicone vs. EPDM) and stainless steel hinge pins determine whether an IP65 rating survives five years of thermal cycling. The cheapest quotes often use regrind ABS with no UV package; expect chalking and brittle fracture within 18\u201324 months in Gulf or Southeast Asian installations.<\/p>\n
Certification Cost Amortisation<\/h3>\n Third-party testing and approval is the second-largest cost driver after the battery pack. A single product family submitted for CE marking with EN 60598-2-22, EN 1838, and EN 62034 testing typically incurs:<\/p>\n
\n\n\nActivity<\/th>\n Indicative Cost<\/th>\n Validity<\/th>\n<\/tr>\n<\/thead>\n \n\nCB test report and certificate (IEC 60598-2-22)<\/td>\n 8,000\u201314,000 USD<\/td>\n Product lifetime with file maintenance<\/td>\n<\/tr>\n \nENEC certification (European national marks)<\/td>\n 4,000\u20137,000 USD additional<\/td>\n Annual factory inspection required<\/td>\n<\/tr>\n \nUL 924 file and follow-up service<\/td>\n 12,000\u201320,000 USD initial<\/td>\n Quarterly inspections<\/td>\n<\/tr>\n \nAS\/NZS 2293.3 test report<\/td>\n 6,000\u201310,000 AUD<\/td>\n 5-year certificate with surveillance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nSpread across a first batch of 2,000 pieces, certification adds $4.00\u20137.00 per unit. A supplier offering “CE certified” product at no premium either holds no valid test report, shares a certificate that does not cover the specific model, or has not updated for the 2022 amendments to EN 60598-2-22. Request the test report number and verify with the notified body.<\/p>\n
Why the Cheapest Quote Differs<\/h3>\n A $3.80 FOB exit sign versus a $7.50 unit from a qualified factory typically reflects:<\/p>\n
\nCell downgrade<\/strong>: 600 mAh NiCd substituting for 1800 mAh Li-ion, yielding 90 minutes at reduced output rather than 3 hours at full rated lumens<\/li>\nOutput reduction<\/strong>: 10% emergency output versus 50% or 100%, still technically “emergency” but providing insufficient illuminance for escape route compliance under BS 5266-1 or NFPA 101<\/li>\nUntested design<\/strong>: No third-party thermal or photometric data; supplier self-declares CE based on incomplete technical file<\/li>\nOmitted protection<\/strong>: No battery management system on Li-ion packs; fire risk under overcharge or cell imbalance conditions<\/li>\n<\/ul>\nFive-Year Running Cost Comparison<\/h3>\n \n\n\nScenario<\/th>\n Purchase Price FOB<\/th>\n Battery Replacements<\/th>\n Testing Labour<\/th>\n Expected Failures<\/th>\n 5-Year Total<\/th>\n<\/tr>\n<\/thead>\n \n\nBudget bulkhead, NiCd 600mAh, 90 min<\/td>\n 5.50<\/td>\n 2 \u00d7 3.50 = 7.00 (years 2, 4)<\/td>\n Annual manual test: 0.5 hr \u00d7 5 \u00d7 25 USD = 62.50<\/td>\n 30% failure rate, 2 units replaced at 8.00<\/td>\n 83.00<\/td>\n<\/tr>\n \nMid-range LED bulkhead, Li-ion 18650 2200mAh, self-test<\/td>\n 12.00<\/td>\n 1 \u00d7 6.50 (year 4)<\/td>\n Automated self-test: 0.1 hr \u00d7 5 \u00d7 25 USD = 12.50<\/td>\n 8% failure rate, 1 unit at 18.00<\/td>\n 49.00<\/td>\n<\/tr>\n \nPremium LiFePO4, DALI-2, 3 hr duration<\/td>\n 28.00<\/td>\n 0 (cycle life exceeds 5 years)<\/td>\n DALI automated reporting: 0.05 hr \u00d7 5 \u00d7 25 USD = 6.25<\/td>\n 3% failure rate, negligible replacement<\/td>\n 34.25<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nLabour rates vary by market; figures assume UK\/European maintenance contractor pricing. The premium product crosses below the budget option between years 3 and 4. For a 200-unit school installation, the cumulative difference exceeds 9,000 USD.<\/p>\n
Supplier Qualification Checklist<\/h3>\n Use this to distinguish manufacturing capacity from trading office packaging:<\/p>\n
\n\n\nCheckpoint<\/th>\n What to Request<\/th>\n Green Flag<\/th>\n Red Flag<\/th>\n<\/tr>\n<\/thead>\n \n\nSMT and assembly<\/td>\n Factory layout video, machine list (Yamaha, Juki, or Panasonic pick-and-place)<\/td>\n In-house SMT line with AOI; reflow oven profile records<\/td>\n All assembly outsourced; no traceable work orders<\/td>\n<\/tr>\n \nBattery sourcing<\/td>\n Cell supplier agreement, incoming test records<\/td>\n Direct OEM relationship with EVE, Lishen, or Farasis; IR and voltage batch logs<\/td>\n “We buy from the market”; no cell markings visible<\/td>\n<\/tr>\n \nDischarge testing<\/td>\n Test station photo, duration test log format<\/td>\n Automated 90-minute \/ 3-hour discharge rigs with data logging; temperature chamber<\/td>\n No dedicated test area; manual stopwatch checks only<\/td>\n<\/tr>\n \nAgeing and hipot<\/td>\n Burn-in rack photo, test voltage and duration<\/td>\n 100% 4-hour burn-in at 40\u00b0C ambient; AC 1500V hipot on finished units<\/td>\n Sample-only testing; no hipot station<\/td>\n<\/tr>\n \nThird-party reports<\/td>\n Test report with model number matching offer<\/td>\n Report covers exact SKU; notified body database verifiable<\/td>\n Report for “similar product”; certificate image only, no report number<\/td>\n<\/tr>\n \nSample lead time<\/td>\n Commitment in writing with courier account<\/td>\n 5\u201310 working days for existing design; engineering samples in 15 days<\/td>\n 3\u20134 weeks “after we check with factory”; no tracking until shipment<\/td>\n<\/tr>\n \nPayment structure<\/td>\n Proforma terms<\/td>\n 30% T\/T deposit, 70% against copy B\/L or L\/C at sight for first order<\/td>\n 100% advance for samples; no recourse for quality disputes<\/td>\n<\/tr>\n \nAfter-sales engineering<\/td>\n Schematic or wiring diagram availability<\/td>\n Dedicated application engineer; DALI commissioning guide; remote fault diagnosis<\/td>\n No technical contact; only sales rep responds<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nLead Time and Logistics Realities<\/h3>\n Standard production lead time from a manufacturer with in-house SMT and battery assembly: 25\u201335 days for 500\u20132000 pieces after deposit and approved artwork. Add 7\u201310 days for UN 38.3 testing documentation if not already on file for the exact cell model. Lithium-containing shipments over 35 kg net cell weight normally move by sea freight (IMO Class 9, UN 3481) with IMDG-compliant packaging; air freight requires airline-specific approval and often costs 3\u20134\u00d7 sea rates. Factor 25\u201335 days sea transit to UK\/Europe, 18\u201322 days to Middle East Gulf ports, 14\u201318 days to Southeast Asia.<\/p>\n
MOQ structures: 500 pieces for standard designs with existing tooling; 2000\u20133000 pieces for custom housing colour or silkscreen; 100-piece sample\/LCL orders accepted at 15\u201325% price premium. Sample policy: free samples against future order commitment, or charged at 1.5\u00d7 unit cost with freight collect.<\/p>\n
Payment Structure and Risk Allocation<\/h3>\n First-order terms of 30% deposit, 70% against fax\/email copy of bill of lading balance risk reasonably. Letters of credit add $400\u2013800 in banking fees but protect against non-shipment. For orders under 10,000 USD, some suppliers accept PayPal or Alibaba Trade Assurance; above that threshold, wire transfer dominates. Never agree to 100% advance payment for a first order from an unverified source. A manufacturer with genuine capacity will accept inspection clauses or third-party pre-shipment inspection (SGS, Bureau Veritas) at buyer cost, typically 300\u2013450 USD per man-day in Shenzhen or Zhongshan.<\/p>\n
Final Specification Lock<\/h3>\n Before issuing a purchase order, confirm in writing:<\/p>\n
\nEmergency output in lumens and as percentage of normal output (e.g., 300 lm, 50% of 600 lm normal)<\/li>\n Duration: 90 minutes, 2 hours, or 3 hours at stated output<\/li>\n Battery: chemistry, nominal voltage, capacity in mAh, cycle life claim<\/li>\n Input voltage and frequency for destination (230V 50Hz UK\/Europe; 120V 60Hz Americas; 220\u2013240V 50Hz Middle East\/Africa)<\/li>\n Test facility: manual key, self-test to EN 62034, or DALI-2 with addressable reporting<\/li>\n Wiring mode: maintained (permanently energised) or non-maintained (switched normal supply)<\/li>\n IP and IK rating for the installed location<\/li>\n Ambient temperature range: standard 0\u00b0C to +25\u00b0C; extended -10\u00b0C to +40\u00b0C or +50\u00b0C for Middle East<\/li>\n Third-party test report numbers and issuing bodies for the destination market<\/li>\n<\/ul>\nRequest the supplier complete a technical data sheet with these fields populated, not a generic brochure. The time invested in qualification at 500-unit trial order prevents specification failure at 10,000-unit rollout.<\/p>\n\nFinished Emergency Lighting packed in export cartons ready for palletising<\/figcaption><\/figure>\nIndustry Applications for Emergency Lighting<\/h2>\n \n\n\nSector<\/th>\n Typical Installation<\/th>\n Recommended Specification<\/th>\n Why This Product Fits<\/th>\n<\/tr>\n<\/thead>\n \n\nHospitals and Clinics<\/td>\n Corridor bulkheads, ward downlights, operating theatre panel lights<\/td>\n 3-hour duration, 100% normal output maintained, LiFePO4 3.2V 6000mAh, IP44 minimum, DALI self-test<\/td>\n Life safety codes mandate uninterrupted illumination for patient evacuation and critical care continuity; maintained wiring ensures no dark interval during transfer<\/td>\n<\/tr>\n \nSchools and Universities<\/td>\n Classroom downlights, hallways, gymnasium high bays, exit signs<\/td>\n 90-minute to 3-hour duration, 10\u201350% normal output non-maintained, NiCd or Li-ion 18650 7.4V 2600mAh, IP20\u2013IP65<\/td>\n Mixed occupancy loads require flexible output levels; vandal-resistant housings and battery chemistry that tolerates extended standby without deep discharge damage<\/td>\n<\/tr>\n \nRetail and Shopping Malls<\/td>\n Recessed spotlights, linear pendant strips, escalator soffit coves<\/td>\n 90-minute duration, 100% maintained for public areas, COB strip 480 LEDs\/m at 24V DC 12W\/m 1200 lm\/m CRI 90 3000K or 4000K, LiFePO4 12.8V 3000mAh<\/td>\n High ambient light levels mean emergency output must match normal display illumination; strip products need precise cut lengths (typically 50mm) to fit architectural coves<\/td>\n<\/tr>\n \nWarehouses and Logistics Centres<\/td>\n LED high bays 100\u2013200W normal, aisle exit signs, bulkheads at loading docks<\/td>\n 3-hour duration, 50\u2013100% output, AC 100\u2013277V input, DC 36\u201380V 350\u2013700mA inverter window, LiFePO4 25.6V 4000mAh, IP65 IK08<\/td>\n High mounting heights (8\u201312m) demand lumen maintenance; wide input voltage accommodates three-phase distribution without neutral dependency; impact rating protects against forklift strikes<\/td>\n<\/tr>\n \nCar Parks and Stairwells<\/td>\n Surface-mounted bulkheads, recessed canopies, wall-mounted twin spots<\/td>\n 90-minute to 2-hour duration, 100% output non-maintained, AC 220\u2013240V or 85\u2013265V universal, DC 12\u201324V 500mA, NiCd 3.6V 1800mAh or Li-ion 7.4V 2200mAh, IP65 IK10<\/td>\n Extreme temperature swings and moisture from vehicle washdown require sealed optics; twin spots provide directional throw for ramp gradients and column shadow zones<\/td>\n<\/tr>\n \nHotels and Residential Common Areas<\/td>\n Decorative pendants, corridor bulkheads with exit sign combo, stairwell strips<\/td>\n 90-minute duration, 50% maintained in corridors, SMD strip 120 LEDs\/m 9.6W\/m 800 lm\/m CRI 80 2700K, 24V DC, cut length 100mm, Li-ion 18650 11.1V 2600mAh, IP44<\/td>\n Guest safety with aesthetic continuity; warm colour temperature preserves hospitality ambience during emergency operation; narrow PCB width (8\u201310mm) fits slim profile housings<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nHospitals and Clinics<\/h3>\n A 450-bed acute hospital in Riyadh specified 100% maintained emergency output across all patient-accessible corridors because BS 5266-1 and local civil defence codes require no reduction in illuminance during mains failure. The procurement team asked for LiFePO4 3.2V 6000mAh packs with a 6-hour recharge to 90% capacity and cycle life documentation exceeding 800 cycles at 80% depth of discharge. DALI-addressable self-test was mandatory to avoid manual testing disruption in operating theatres. Suppliers had to show discharge duration test records for each batch: 180 minutes at 15W maintained load, with cell voltage not falling below 2.8V per cell. IP44 was the minimum accepted for ward areas; catheter labs and sterilisation suites demanded IP65. Buyers should verify the supplier runs ageing stations that log 72-hour burn-in at 45\u00b0C ambient before shipment, and that battery cell lot numbers trace back to tier-one cell manufacturers with UN 38.3 test summaries for air freight.<\/p>\n
Schools and Universities<\/h3>\n A university campus refurbishment in Kuala Lumpur mixed 90-minute and 3-hour systems depending on building height and fire compartmentation. Classroom downlights used non-maintained wiring with 10% emergency output\u2014sufficient for orderly evacuation of seated occupants. Gymnasium high bays required 50% output minimum from Li-ion 18650 7.4V 2600mAh packs to cover 8m ceiling heights at 3 lux horizontal per EN 1838. The facilities manager prioritised NiCd alternatives for outdoor sports pavilions because of Malaysia’s 30\u00b0C+ ambient and Li-ion degradation concerns, accepting the heavier weight and 500-cycle shorter life. Suppliers quoting should provide hipot test records at 1500V AC for 60 seconds on each inverter PCB assembly, and demonstrate SMT capacity for the changeover relay and constant current driver boards in-house or under direct partnership with named EMS providers.<\/p>\n
Retail and Shopping Malls<\/h3>\n A Dubai mall fit-out specified 100% maintained emergency for all public circulation areas to prevent panic during phased evacuation. The lighting designer selected COB LED strip at 24V DC, 12W\/m, 1200 lm\/m, CRI 90, 4000K, with 50mm cut lengths to terminate precisely at mirror-polished stainless steel cove junctions. The emergency driver delivered DC 24V 500mA from a LiFePO4 12.8V 3000mAh pack through a boost inverter, giving 90 minutes at full strip output. Critical qualification criteria included: supplier evidence of EN 60598-2-22 clause 16 thermal testing on cove-mounted luminaire samples, and third-party photometric files showing no colour shift beyond 200K during emergency operation. Sample lead time was 10 working days; production MOQ 500 metres with 4-week lead time after deposit.<\/p>\n
Warehouses and Logistics Centres<\/h3>\n A Rotterdam distribution centre for chilled pharmaceuticals required 3-hour duration across 12,000 square metres of racking aisles. LED high bays normal 150W were paired with emergency drivers accepting AC 100\u2013277V and delivering DC 36\u201380V at 350mA to match the LED module Vf curve. LiFePO4 25.6V 4000mAh packs were selected for \u221210\u00b0C to +45\u00b0C operational range and 2000+ cycle life at 50% depth of discharge. The specifier demanded IK08 on all housings at aisle intersections where reach trucks operate. Buyers evaluating suppliers should request: discharge test records showing 180-minute output at 75W emergency load with lumen maintenance curves, and confirmation that battery assembly occurs in a humidity-controlled cell insertion area with ESD protection, not outsourced to an unverified third party.<\/p>\n
Car Parks and Stairwells<\/h3>\n A London Underground-adjacent multi-storey car park required IP65 IK10 bulkheads with 90-minute duration at 100% output, non-maintained, to meet Transport for London fire safety integration standards. The electrical contractor specified AC 220\u2013240V input with DC 12\u201324V 500mA output window to accommodate both existing 12V LED modules and planned 24V upgrades. NiCd 3.6V 1800mAh packs were accepted for cost sensitivity, with the trade-off of 500-cycle life and 24-hour full recharge versus Li-ion 7.4V 2200mAh at 800 cycles and 6-hour recharge. The supplier had to demonstrate: manual test key facility as standard with DALI self-test optional for future BMS integration, and salt mist testing to EN 60598-2-22 annex requirements for the chloride-rich environment. Sample availability was 7 days; production lead time 3 weeks for 200 units.<\/p>\n
Hotels and Residential Common Areas<\/h3>\n A Bangkok serviced apartment tower specified corridor bulkheads with combined LED exit signage and 50% maintained downlight output for 90 minutes. The interior designer insisted on SMD strip 120 LEDs\/m, 9.6W\/m, 800 lm\/m, CRI 80, 2700K, with 100mm cut length and 8mm PCB width, to continue the warm ambient lighting aesthetic during emergency operation. Li-ion 18650 11.1V 2600mAh packs powered the strip through DC 24V constant voltage inverters with changeover relay transfer time under 0.25 seconds per EN 62034. The procurement officer qualified suppliers on: ability to provide batch-specific cell impedance test data, in-house SMT line for the inverter PCBA with AOI inspection records, and after-sales engineering support for DALI commissioning within ASEAN time zones. Payment structure was 30% deposit, 70% against bill of lading; MOQ 300 metres with 5-week lead time for custom colour temperature matching.<\/p>\n
Ordering and Importing Step by Step<\/h2>\n Three mistakes routinely leave a delivered batch of emergency lighting unusable. Each has a one-line fix.<\/p>\n
Mistake 1:<\/strong> Ordering an emergency driver with an output window that does not match the host fixture’s LED module voltage and current draw. Fix:<\/strong> Record the fixture’s normal-mode forward voltage and constant-current set point before selecting the inverter.<\/p>\nMistake 2:<\/strong> Specifying emergency duration or output below the local code minimum for the occupancy type. Fix:<\/strong> Confirm the required 90-minute, 2-hour or 3-hour duration and the minimum lux on the escape route before signing the purchase order.<\/p>\nMistake 3:<\/strong> Shipping lithium battery packs without UN 38.3 test summaries and the correct hazard labels. Fix:<\/strong> Request the UN 38.3 report, MSDS and shipping classification from the supplier before booking freight.<\/p>\nHow to Tell a Real Emergency Lighting Manufacturer from a Trading Office<\/h3>\n A trading office can forward a catalogue. A manufacturer can explain why a 3.2V LiFePO4 pack at 3000mAh delivers 3 hours at 4W but only 90 minutes at 8W, and produce the discharge curves to prove it. Verify these points before placing a deposit.<\/p>\n
Surface-mount and assembly capacity.<\/strong> Ask for photos or video of the SMT line that places the inverter PCB. A 500mm x 350mm board with constant-current output stage, changeover relay and battery management circuit should run through reflow in-house or at a partnered facility under their process control. Trading offices show generic factory images; manufacturers show the specific line running your product with date-stamped footage.<\/p>\nBattery sourcing and traceability.<\/strong> The three chemistries in common use are NiCd 3.6V to 6.0V packs (600mAh to 1800mAh, shorter cycle life, heavier, declining availability due to environmental restrictions), Li-ion 18650 cylindrical cells in 3.7V configurations (2000mAh to 2600mAh, roughly 300 to 500 cycles, higher energy density, stricter shipping rules), and LiFePO4 3.2V packs (1500mAh to 3000mAh, roughly 500 to 800 cycles, better thermal stability, preferred for 3-hour duration requirements). Demand cell-level purchase invoices or a letter from the cell vendor authorising the supplier as a pack assembler. Ask for the batch code system that links a finished driver to a battery cell lot.<\/p>\nDischarge and duration test records.<\/strong> Every batch should have 100% functional test and AQL sampling for duration. A real manufacturer keeps ageing test stations where sample units run the full 90-minute, 2-hour or 3-hour discharge at rated load, recorded by datalogger with timestamp and load value. Hipot test at 1500V AC or 2U+1000V per IEC 61347 should be logged per unit. Ask to see a blank test report template before you order.<\/p>\nThird-party test reports for the destination market.<\/strong> Do not accept a generic CE certificate. Ask for the test report number issued against EN 60598-2-22 for luminaires or EN 61347 for emergency drivers, with the specific model designation you are buying. For the UK market, request evidence of assessment against BS 5266-1. For North America, UL 924 test reports. For Australia and New Zealand, AS\/NZS 2293.2. The report should cover the exact battery chemistry, capacity and duration claimed. If the supplier cannot produce the report, you are the importer of record and the compliance risk sits with you.<\/p>\nSample lead time and payment structure.<\/strong> A manufacturer with in-house SMT can deliver samples in 7 to 14 days. Trading offices often need 4 to 6 weeks because they are queuing behind other clients at a distant factory. Payment terms reveal structure: manufacturers typically ask 30% deposit, 70% against copy of bill of lading or before release of sea-waybill. Trading offices may demand 100% upfront or offer unusual terms because they have no credit line with the underlying factory.<\/p>\nAfter-sales engineering capability.<\/strong> Ask a technical question before you buy: “If my LED panel runs at 36V 350mA normal mode, what happens to the emergency output if one LED string fails open?” A manufacturer answers with the inverter’s constant-current behaviour and the changeover relay logic. A trading office copies your question into a WeChat group and waits.<\/p>\nThe Ordering and Import Checklist<\/h3>\n Use this numbered list from specification through commissioning.<\/p>\n
1. Record Host Fixture Data Before Selecting the Emergency Driver<\/strong><\/p>\n\n\n\nParameter<\/th>\n What to Document<\/th>\n Typical Range<\/th>\n<\/tr>\n<\/thead>\n \n\nNormal input voltage<\/td>\n AC mains to fixture driver<\/td>\n 220-240V 50Hz (UK\/EU\/Middle East\/Africa), 100-277V 50\/60Hz (Southeast Asia\/Latin America), 120-277V 60Hz (North America)<\/td>\n<\/tr>\n \nNormal LED forward voltage<\/td>\n DC output of built-in driver to LED module<\/td>\n 24V to 54V for panels and high bays, 9V to 24V for tubes and linear<\/td>\n<\/tr>\n \nNormal constant-current set point<\/td>\n mA or W rating<\/td>\n 200mA to 700mA for panels, 50mA to 150mA per metre for strips<\/td>\n<\/tr>\n \nFixture lumen output normal mode<\/td>\n Total lumens<\/td>\n 3000lm to 5000lm for 600×600 panels, 8000lm to 15000lm for high bays<\/td>\n<\/tr>\n \nDesired emergency output<\/td>\n As percentage of normal or minimum lumens<\/td>\n 10% to 50% per EN 1838 for escape routes; 100% for full-power emergency drivers<\/td>\n<\/tr>\n \nPhysical space for inverter module<\/td>\n Dimensions inside fixture housing<\/td>\n Typically 200mm x 50mm x 30mm to 300mm x 80mm x 40mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nThe emergency driver’s DC output window must sit within the LED module’s forward voltage range at the emergency current. A 36V 350mA panel needs an inverter with output window approximately 24V-42V DC at 250mA to 350mA for 3W to 5W emergency output, not a 12V-24V unit intended for strip applications.<\/p>\n
2. Confirm Duration and Emergency Output Level Against Local Code<\/strong><\/p>\n\n\n\nApplication<\/th>\n Typical Duration Requirement<\/th>\n Typical Minimum Emergency Output<\/th>\n<\/tr>\n<\/thead>\n \n\nSchools (UK, BS 5266-1)<\/td>\n 3 hours<\/td>\n 10% of normal or minimum 1 lux on escape route, whichever is higher<\/td>\n<\/tr>\n \nHospitals (UK, BS 5266-1, HTM 05-02)<\/td>\n 3 hours<\/td>\n 50% of normal for treatment areas; 100% for operating theatres with full-power emergency<\/td>\n<\/tr>\n \nGeneral commercial (EU, EN 1838)<\/td>\n 1 hour or 3 hours depending on national annex<\/td>\n 1 lux on centre line of escape route<\/td>\n<\/tr>\n \nNorth America (NFPA 101, UL 924)<\/td>\n 90 minutes<\/td>\n 1 footcandle average, 0.1 footcandle minimum<\/td>\n<\/tr>\n \nAustralia\/New Zealand (AS\/NZS 2293.1)<\/td>\n 90 minutes or 2 hours depending on building class<\/td>\n 0.2 lux minimum on floor<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nA 3.2V LiFePO4 3000mAh pack stores approximately 9.6Wh nominal. At inverter efficiency of 85%, this yields 8.2Wh to the LEDs. At 4W LED load, duration is approximately 2 hours. At 2.5W, duration reaches 3 hours. The supplier must size the battery for your specific load and duration, not quote a generic “3-hour” driver.<\/p>\n
3. Choose Maintained or Non-Maintained Wiring<\/strong><\/p>\nMaintained:<\/strong> The emergency lamp operates in normal mode via the mains supply and switches to battery inverter on mains failure. Requires a switched live plus permanent live to the emergency module. Common in escape corridors where the luminaire is the only light source.<\/p>\nNon-maintained:<\/strong> The lamp is dark in normal mode and illuminates only on mains failure. Requires only permanent live to the module. Lower energy consumption, but the space needs separate normal lighting.<\/p>\nCombined:<\/strong> Maintained operation with the option to wire as non-maintained. Specify which you need; the PCB jumper or wiring configuration differs.<\/p>\n4. Decide Test Facility Type<\/strong><\/p>\n\n\n\nType<\/th>\n Wiring<\/th>\n Cost Impact<\/th>\n Best For<\/th>\n<\/tr>\n<\/thead>\n \n\nManual test key<\/td>\n Simple two-wire or three-wire<\/td>\n Lowest<\/td>\n Small installations with single responsible person<\/td>\n<\/tr>\n \nAutomatic self-test (EN 62034)<\/td>\n Same wiring, module has clock and logic<\/td>\n +15% to +25% module cost<\/td>\n Schools, hospitals, any site with multiple circuits and limited maintenance staff<\/td>\n<\/tr>\n \nDALI self-test (DALI-2 Part 252)<\/td>\n DALI bus plus mains<\/td>\n +30% to +50% module cost, requires DALI infrastructure<\/td>\n New-build hospitals, BMS-integrated schools, smart buildings<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nSelf-test modules perform brief functional tests at intervals (typically monthly 1-minute, annually full duration) and report fault status via LED indicator or DALI. The supplier should state the test schedule and how fault codes are read.<\/p>\n
5. Confirm Mains Voltage and Frequency<\/strong><\/p>\n\n\n\nMarket<\/th>\n Nominal Voltage<\/th>\n Frequency<\/th>\n Tolerance to Specify<\/th>\n<\/tr>\n<\/thead>\n \n\nUK<\/td>\n 230V<\/td>\n 50Hz<\/td>\n AC 220-240V<\/td>\n<\/tr>\n \nContinental Europe<\/td>\n 230V<\/td>\n 50Hz<\/td>\n AC 220-240V<\/td>\n<\/tr>\n \nMiddle East<\/td>\n 230V<\/td>\n 50Hz<\/td>\n AC 220-240V, some areas 415V three-phase<\/td>\n<\/tr>\n \nSoutheast Asia<\/td>\n 220V or 230V<\/td>\n 50Hz<\/td>\n AC 220-240V, verify country: Philippines 220V 60Hz, Singapore 230V 50Hz<\/td>\n<\/tr>\n \nAfrica (most)<\/td>\n 220V or 230V<\/td>\n 50Hz<\/td>\n AC 220-240V, wide actual variation<\/td>\n<\/tr>\n \nLatin America<\/td>\n 110V to 220V<\/td>\n 50Hz or 60Hz<\/td>\n AC 100-277V wide-range input recommended for regional coverage<\/td>\n<\/tr>\n \nNorth America<\/td>\n 120V or 277V<\/td>\n 60Hz<\/td>\n AC 120-277V<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nA driver rated AC 85-265V covers most of the world except Japan 100V and some Latin American 110V circuits at the low end. AC 100-277V is the safer wide-range specification for multi-destination projects.<\/p>\n
6. Confirm Conformity Mark and Required Test Report<\/strong><\/p>\n\n\n\nMarket<\/th>\n Mark on Product<\/th>\n Standard to Reference in Purchase Order<\/th>\n What to Request from Supplier<\/th>\n<\/tr>\n<\/thead>\n \n\nUK<\/td>\n UKCA<\/td>\n BS EN 60598-2-22, BS 5266-1<\/td>\n Test report with UKAS-recognised body, or supplier’s technical file reference<\/td>\n<\/tr>\n \nEU\/EEA<\/td>\n CE (EN)<\/td>\n EN 60598-2-22, EN 1838, EN 62034 if self-test<\/td>\n EU-type examination test report, Declaration of Conformity<\/td>\n<\/tr>\n \nMiddle East (most)<\/td>\n CE or G-Mark depending on GCC member<\/td>\n EN 60598-2-22 plus national deviations<\/td>\n G-Mark certificate if required by destination emirate<\/td>\n<\/tr>\n \nSoutheast Asia<\/td>\n Varies: PSB (Singapore), SIRIM (Malaysia), TISI (Thailand)<\/td>\n National standard or EN with local acceptance<\/td>\n Specific approval number for country<\/td>\n<\/tr>\n \nAfrica<\/td>\n CE often accepted, some countries require local Type Approval<\/td>\n EN 60598-2-22<\/td>\n Import inspection certificate requirements from freight forwarder<\/td>\n<\/tr>\n \nLatin America<\/td>\n INMETRO (Brazil), SEC (Chile), etc.<\/td>\n Local standard or IEC with national deviations<\/td>\n Specific approval; many markets accept CE with Portuguese\/Spanish documentation<\/td>\n<\/tr>\n \nNorth America<\/td>\n cULus or ETL<\/td>\n UL 924, NFPA 101<\/td>\n UL file number or ETL report number<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nNever ship based on a supplier’s claim of certification. Request the report number and verify it with the issuing body if the value of the shipment justifies the check.<\/p>\n
7. Check IP Rating and Ambient Temperature for Mounting Position<\/strong><\/p>\n\n\n\nLocation<\/th>\n Minimum IP<\/th>\n Ambient Temperature Range<\/th>\n Battery Chemistry Note<\/th>\n<\/tr>\n<\/thead>\n \n\nClean interior corridors<\/td>\n IP20<\/td>\n -10\u00b0C to +40\u00b0C<\/td>\n Standard Li-ion or LiFePO4 acceptable<\/td>\n<\/tr>\n \nSchool toilets, hospital wards<\/td>\n IP44<\/td>\n -10\u00b0C to +40\u00b0C<\/td>\n Protected against splashing<\/td>\n<\/tr>\n \nKitchens, plant rooms, covered external<\/td>\n IP54<\/td>\n -10\u00b0C to +45\u00b0C<\/td>\n Dust protected; NiCd historically used for high temperature but LiFePO4 preferred now<\/td>\n<\/tr>\n \nExternal canopies, tunnels<\/td>\n IP65<\/td>\n -20\u00b0C to +50\u00b0C<\/td>\n LiFePO4 better for low temperature discharge; specify low-temperature performance curve<\/td>\n<\/tr>\n \nCold stores, refrigerated hospital areas<\/td>\n IP65<\/td>\n -25\u00b0C to +40\u00b0C<\/td>\n Battery capacity derates significantly below 0\u00b0C; size for derated capacity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nThe supplier should state the temperature derating curve for the selected battery: a 3000mAh LiFePO4 pack may deliver only 70% of rated capacity at -20\u00b0C, turning a 3-hour unit into a 2-hour unit unless oversized.<\/p>\n
8. Agree MOQ and Sample Approval Before Mass Production<\/strong><\/p>\n\n\n\nItem<\/th>\n Typical Parameter<\/th>\n Negotiation Point<\/th>\n<\/tr>\n<\/thead>\n \n\nSample lead time<\/td>\n 7 to 14 days for customised driver<\/td>\n 3 to 5 days if using standard module with adjusted output window<\/td>\n<\/tr>\n \nSample cost<\/td>\n 2x to 3x unit cost or free with mass order commitment<\/td>\n Deduct from first production order<\/td>\n<\/tr>\n \nMOQ for standard module<\/td>\n 500 to 1000 units<\/td>\n 300 units sometimes accepted at slight premium<\/td>\n<\/tr>\n \nMOQ for customised module (specific output window, label, packaging)<\/td>\n 1000 to 3000 units<\/td>\n Tooling charge for custom PCB if below MOQ<\/td>\n<\/tr>\n \nMass production lead time<\/td>\n 25 to 35 days after sample approval<\/td>\n 45 days if battery cell lead time extends<\/td>\n<\/tr>\n \nPayment terms<\/td>\n 30% T\/T deposit, 70% against B\/L copy or before release<\/td>\n LC at sight for orders above USD 50,000 if supplier accepts<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nRequire signed sample approval with technical specification sheet before releasing deposit for mass production. The sample approval should reference the exact output window, duration test result, battery part number and label artwork.<\/p>\n
9. Require Batch Duration Test Records<\/strong><\/p>\nSpecify in the purchase order: “Supplier to provide discharge test records for AQL 2.5% sample from each production batch. Records to include unit serial number, test date, ambient temperature, load in watts, duration to 80% rated voltage, and pass\/fail.” This is separate from and in addition to any third-party test report. A manufacturer maintains these records for warranty traceability; a trading office may not know what you are asking for.<\/p>\n
10. Arrange Lithium Battery Shipping Documents and Correct Freight Mode<\/strong><\/p>\n\n\n\nBattery Configuration<\/th>\n UN Number<\/th>\n Shipping Classification<\/th>\n Documentation Required<\/th>\n<\/tr>\n<\/thead>\n \n\nLi-ion 18650 cells, \u2264100Wh per pack<\/td>\n UN 3480 if standalone, UN 3481 if in equipment<\/td>\n Class 9 dangerous goods<\/td>\n UN 38.3 test summary, MSDS, shipper’s declaration, cargo-only aircraft if above passenger limits<\/td>\n<\/tr>\n \nLiFePO4 3.2V 3000mAh (9.6Wh), multiple cells in pack<\/td>\n UN 3480 or UN 3481 depending on configuration<\/td>\n Class 9<\/td>\n Same; note some carriers treat LiFePO4 as less restricted but IATA DGR still applies<\/td>\n<\/tr>\n \nNiCd packs<\/td>\n Not lithium, but environmentally hazardous<\/td>\n UN 2795 or UN 3028 depending on state<\/td>\n MSDS, sometimes limited quantity exemption<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nFreight mode decisions:<\/strong><\/p>\n\nAir freight:<\/strong> Fastest, highest cost, strictest lithium limits (typically 35kg net lithium content per package for passenger aircraft, higher for cargo-only). UN 38.3 mandatory. Some airlines refuse lithium entirely; confirm before booking.<\/li>\nSea freight (FCL):<\/strong> Most economical for MOQ quantities. IMDG Code applies. Proper container declaration and stowage required. Transit time 18 to 35 days Asia to Europe\/Middle East, 25 to 45 days to Africa\/Latin America.<\/li>\nSea freight (LCL):<\/strong> Higher risk of mishandling and customs inspection. Lithium consolidation rules vary by forwarder.<\/li>\nExpress courier (DHL\/FedEx\/UPS):<\/strong> Convenient for samples under 5kg. Automatic dangerous goods handling surcharge. Battery must be in equipment or proper packaging; standalone cells often rejected.<\/li>\n<\/ul>\nTerms:<\/strong> FOB Shenzhen or FOB Hong Kong standard for Chinese manufacturers. CIF destination port adds freight and insurance; buyer still clears customs and pays duty. DDP possible with experienced forwarder but supplier must have export dangerous goods capability in-house.<\/p>\n11. Specify Carton and Pallet Packing and Labelling<\/strong><\/p>\n\n\n\nItem<\/th>\n Specification<\/th>\n<\/tr>\n<\/thead>\n \n\nInner carton<\/td>\n Corrugated double-wall, 5-ply, with individual polybag or foam insert per unit<\/td>\n<\/tr>\n \nUnits per carton<\/td>\n Typically 20 to 50 for emergency drivers, 10 to 20 for self-contained luminaires depending on size<\/td>\n<\/tr>\n \nCarton marking<\/td>\n Model number, quantity, gross\/net weight, battery chemistry warning label, UN 3481 handling label if lithium installed, “This Way Up” arrows<\/td>\n<\/tr>\n \nOuter pallet<\/td>\n ISPM-15 heat-treated wood or plastic, 1100mm x 1100mm or 1200mm x 1000mm<\/td>\n<\/tr>\n \nCartons per pallet<\/td>\n Maximum 1.5m stack height, weight within forklift rating and destination warehouse racking limit<\/td>\n<\/tr>\n \nContainer loading<\/td>\n 20GP approximately 28 CBM, 40HQ approximately 68 CBM; verify battery stowage segregation rules<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nRequest photos of the actual packed carton from a previous shipment, not a render. Verify the battery warning label wording matches the latest IATA\/IMDG edition.<\/p>\n
12. Plan Commissioning and First Annual Test<\/strong><\/p>\nThe supplier’s responsibility ends at functioning product. Your responsibility as buyer, or your customer’s as installer, begins at commissioning.<\/p>\n
\n\n\nTask<\/th>\n Timing<\/th>\n Reference<\/th>\n<\/tr>\n<\/thead>\n \n\nVisual inspection of installation, labelling, circuit identification<\/td>\n Day of completion<\/td>\n BS 5266-1 clause 8, EN 50172<\/td>\n<\/tr>\n \nFunctional test: simulate mains failure, verify all units illuminate<\/td>\n Day of completion<\/td>\n EN 62034 for self-test systems; manual key test for others<\/td>\n<\/tr>\n \nDuration test: full discharge to verify achieved duration<\/td>\n Within first month of operation<\/td>\n Record actual duration; compare to specified 90min\/2hr\/3hr<\/td>\n<\/tr>\n \nLog results and any failures<\/td>\n Immediate<\/td>\n Warranty claim with supplier if duration short; requires batch test records from step 9<\/td>\n<\/tr>\n \nFirst annual test<\/td>\n 12 months from commissioning<\/td>\n BS 5266-1 requires annual duration test for all systems<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\nRequire the supplier to provide commissioning test sheets in English or local language, with space to record unit serial number, test date, achieved duration and inspector signature. This is not standard from all factories; specify it in the purchase order if needed.<\/p>\n
Final Verification Before Release of Deposit<\/h3>\n Email the supplier this checklist and request written confirmation against each item. A manufacturer answers promptly with specific numbers: “Output window 24-42V DC at 300mA, LiFePO4 3.2V 3000mAh, 3 hours at 3.5W load, -10\u00b0C to +45\u00b0C ambient, IP20 module, self-test to EN 62034, test report EN 60598-2-22 reference [number], UN 38.3 summary attached, 30\/70 payment, 28 days lead time after sample approval.” A trading office answers with promises and requests more time. The difference costs nothing to discover and everything to ignore.<\/p>\n
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