{"id":7337,"date":"2026-09-06T07:14:42","date_gmt":"2026-09-06T07:14:42","guid":{"rendered":"https:\/\/www.jialinghang.com\/?p=7337"},"modified":"2026-09-06T13:48:15","modified_gmt":"2026-09-06T13:48:15","slug":"choosing-a-emergency-lighting-supplier-in-china-factory-checklist","status":"publish","type":"post","link":"https:\/\/www.jialinghang.com\/vi\/choosing-a-emergency-lighting-supplier-in-china-factory-checklist\/","title":{"rendered":"Choosing a Emergency Lighting Supplier in China: Factory Checklist"},"content":{"rendered":"
Constant current inverter 24-36V DC 250-350mA output window<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Full-power emergency drivers represent the highest specification tier in emergency lighting and carry corresponding cost and lead time implications. These units must deliver 100% of the normal LED load wattage during emergency operation, typically 50W to 100W for LED high bays, requiring LiFePO4 battery packs at 12.8V or 25.6V with capacities from 3000mAh to 9000mAh to sustain discharge currents of 2A to 4A for three hours. The inverter stage operates at 90-95% efficiency with constant current output in the 700mA to 1050mA range for high-voltage LED strings, or 24-36V DC at 1.5A to 2.5A for lower voltage configurations. Buyers normally include M&E consultants specifying life safety systems for industrial procurement and luminaire OEMs retrofitting their high-bay catalogue with emergency versions. What this class cannot do is operate indefinitely at full power without thermal derating; ambient temperatures above 45\u00b0C force output reduction or shortened battery life, and the battery pack physical volume often exceeds the driver housing capacity, requiring external mounting with IP65-rated enclosures.<\/p>\n
Reduced-power emergency drivers offer a compromise that trades luminous output for reduced component cost and faster availability. These units deliver 10% to 25% of normal fixture output, typically 10W to 25W emergency load, using smaller Li-ion 18650 cell packs at 11.1V or 14.8V with 2000mAh to 4000mAh capacity sufficient for 90-minute duration. The output window runs 24-36V DC at 350mA to 700mA constant current. Electrical contractors and lighting wholesalers favour this class for office retrofit projects where existing spacing allows lower emergency illuminance under BS 5266-1 or local derivatives. The limitation is strict: EN 1838 mandates minimum 1 lux on the centre line of escape routes, and a 25% output reduction from a 4000-lm panel may drop below this threshold at standard mounting heights, requiring closer spacing or supplementary units that erode initial savings.<\/p>\n
Maintained exit signs with integrated LED modules serve a specialised function distinct from area illumination. These units draw normal power from the mains through the internal LED driver at 3W to 8W, switching instantly via changeover relay to battery supply on mains failure, delivering 50-150 lm face brightness across the sign surface. Battery configurations range from NiCd 3.6V 600mAh for 90-minute duration in legacy specifications, through Li-ion 18650 7.4V 2200mAh, to LiFePO4 6.4V 1500mAh for longer cycle life. Input voltage spans AC 85-265V for global compatibility or 220-240V for UK\/Europe-specific models. Facility managers and building compliance officers purchase these for healthcare and transport applications where maintained operation is mandatory. The constraint is that maintained wiring requires permanent live, neutral and switched live conductors at each point, complicating installation in retrofit projects with only two-wire circuits, and the continuous mains loading generates standby energy consumption that non-maintained alternatives avoid.<\/p>\n
Non-maintained bulkhead emergency luminaires operate in standby charge mode with no normal light output, activating only on mains failure. These self-contained units typically house 3.6V NiCd 1500mAh or 3.2V LiFePO4 2000mAh battery packs driving 1W to 5W LED arrays at 200-400 lm output for 90 minutes. Input is AC 220-240V 50Hz or 100-277V 60Hz depending on destination market. IP ratings run IP65 for outdoor or wet location versions, IK08 for vandal-resistant housings. Electrical contractors and installers favour these for stairwells, plant rooms and storage areas where no normal lighting upgrade is planned. The limitation is functional: the luminaire provides no contribution to normal illuminance calculations, so the space requires separate general lighting, and battery ageing in standby-only duty may go undetected without regular manual testing or self-test circuitry addition.<\/p>\n
Self-test emergency drivers with DALI-2 interface address the operational burden of compliance verification in large building portfolios. These units incorporate EN 62034-compliant automatic test scheduling, performing monthly function tests and annual duration tests, reporting results via DALI broadcast to central building management systems. Technical specifications include programmable emergency output from 10W to 60W, 90-minute or 3-hour duration selection, LiFePO4 battery packs with 1500 to 2000 cycle life, and input voltage 220-240V or 100-277V. The output window is configurable 24-50V DC at 200mA to 1250mA. Lighting designers and specifiers for smart commercial buildings, plus facility managers with centralised maintenance contracts, drive demand. What this class cannot do is eliminate the need for physical inspection; DALI reports a successful test but cannot verify actual lumen output degradation, lens contamination, or physical damage, and the communications module adds 15-25% cost premium over basic self-test units with manual test key only.<\/p>\n
LED strip emergency modules represent a niche but growing category for architectural and accent lighting applications. These compact inverters accept 24V DC normal input from switched-mode power supplies, converting to constant current 24-36V DC at 250-350mA for 5-metre COB or SMD LED strip sections, typically 4W to 10W emergency load delivering 400-1000 lm depending on strip specification. Battery packs use 11.1V Li-ion 18650 2200mAh or 12.8V LiFePO4 1500mAh configurations, with 90-minute or 2-hour duration. Charge time from full discharge is 12-16 hours. Lighting designers and hospitality specifiers purchase these for cove and feature lighting where emergency compliance is required without visible luminaire intrusion. The constraint is thermal: LED strip PCB copper weight, typically 2oz to 4oz, and aluminium profile heat sinking must be sized for emergency-only operation where airflow patterns differ from normal operation, and the narrow output window restricts compatibility to specific LED strip voltage and current ratings, preventing generic interchangeability.<\/p>\n
\nEmergency Lighting assembled and function tested before shipment<\/figcaption><\/figure>\n
Specifications and How to Read Them<\/h2>\n
\n\n
\n
Parameter<\/th>\n
Entry Level<\/th>\n
Mid Range<\/th>\n
High Specification<\/th>\n<\/tr>\n<\/thead>\n
\n
\n
Input Voltage \/ Frequency<\/td>\n
AC 85-265V 50\/60Hz<\/td>\n
AC 100-277V 50\/60Hz<\/td>\n
AC 220-240V 50Hz or AC 120-277V 60Hz<\/td>\n<\/tr>\n
How to Read an Emergency Lighting Datasheet Line by Line<\/h3>\n
Input voltage range and frequency<\/strong> tells you where the driver will survive. A label reading “AC 85-265V 50\/60Hz” means the unit accepts anything from Japanese 100V to UK 240V without a tap change. For a UK-only project, “AC 220-240V 50Hz” is sufficient and usually cheaper because the input filter and surge suppression can be lighter. Wider ranges add cost but reduce SKU count for distributors covering multiple continents.<\/p>\n
Driven load in watts<\/strong> is the LED module the emergency driver must support in normal mode. This is not the emergency output. A driver rated for 10W normal load may deliver only 6W in emergency mode. The datasheet must show both numbers separately. If you are retrofitting emergency into an existing 40W LED high bay, the emergency driver needs at least 40W normal-load rating plus headroom for inrush.<\/p>\n
DC output voltage window and current<\/strong> describe what the inverter feeds the LED in emergency mode. “24-80V DC at 350mA constant current” means the driver hunts for the voltage that draws 350mA through the LED array. The window must overlap the LED forward-voltage curve at reduced current. Too narrow a window and the LED will not strike; too wide and the inverter loses efficiency. Constant-current output is preferable to constant-voltage for LED longevity because it prevents thermal runaway.<\/p>\n
Emergency output in lumens and as a percentage of normal<\/strong> is the figure inspectors check against EN 1838 or BS 5266-1. A mid-range exit sign might deliver 180 lm in emergency, which happens to equal its normal output because the small LED count runs at full current. A high-bay emergency driver delivering 2,500 lm in emergency may be only 50% of normal 5,000 lm, but that still satisfies the minimum illuminance tables in BS 5266-1 for open areas. The percentage matters for maintained wiring: if the normal luminaire dims to 50% in emergency, occupants notice the change. If it drops to 10%, the space may fall below minimum levels.<\/p>\n
Emergency duration<\/strong> is 90 minutes for most UK and European applications, 120 minutes for some healthcare and high-risk premises under BS 5266-1, and 180 minutes for specific Middle Eastern authority requirements or tunnel applications. The battery capacity in watt-hours must equal emergency load multiplied by duration divided by inverter efficiency (typically 80-85%). A 10W emergency load for 120 minutes needs at least 20Wh usable; with 85% efficiency and end-of-life degradation, the installed battery might be 28-30Wh nominal.<\/p>\n
Battery chemistry, voltage and capacity<\/strong> determines cycle life, temperature tolerance and transport cost. NiCd 3.6V 1,500mAh packs are cheap, tolerate shallow discharge poorly, contain cadmium with RoHS and REACH restrictions, and deliver 300-500 cycles. Li-ion 18650 7.4V 2,600mAh packs using NMC chemistry offer 800-1,000 cycles and higher energy density but require UN 38.3 testing for air freight and more sophisticated battery management. LiFePO4 12.8V 3,000mAh packs deliver 2,000-3,000 cycles, tolerate +55\u00b0C ambient, and are increasingly specified for projects with 10-year maintenance intervals. Ask the supplier for the cell manufacturer and batch test records; unbranded 18650 cells often fail to meet stated capacity.<\/p>\n
Charge time<\/strong> matters for projects with limited commissioning windows. A 24-hour NiCd charge means the installer must return for functional testing the next day. A 6-hour LiFePO4 charge allows same-day test and handover. Fast charge is not always better: rates above 0.5C reduce cycle life unless the battery management system actively balances cells.<\/p>\n
Test facility<\/strong> ranges from manual test key (press and hold, observe indicator), through auto self-test per EN 62034 (monthly function and annual duration tests with status LED), to DALI-2 Type A emergency (addressable, reportable to central BMS). Manual test is cheapest but relies on facility staff discipline. DALI adds 15-25% to driver cost and requires compatible infrastructure. Self-test drivers with lithium batteries must include low-voltage disconnect to prevent deep discharge during prolonged storage.<\/p>\n
Maintained versus non-maintained wiring<\/strong> determines how the luminaire behaves in normal mains present. Non-maintained: LED off until mains fails, then battery inverter activates. Maintained: LED on via changeover relay in normal mode, switches to inverter on failure. Some drivers offer switched maintained (separate live to force emergency on for testing). The wiring diagram must show terminal numbering compatible with local practice: UK installers expect L, N, E plus switched live and neutral; European panels may need additional terminals for central test lines.<\/p>\n
IP and IK rating<\/strong> protects against dust, water and mechanical impact. IP20 suits dry interior ceilings. IP65 with gasketed enclosure is minimum for car parks, tunnels and food processing. IK08 (5 joule impact) handles accidental pole contact; IK10 (20 joule) is specified for vandal-prone public areas. The rating applies to the complete installed assembly, not just the driver box; a driver rated IP65 becomes IP20 if the installer leaves cable glands loose.<\/p>\n
Ambient temperature range<\/strong> is where battery chemistry bites. NiCd performs poorly below 0\u00b0C. Standard Li-ion 18650 should not charge below 0\u00b0C without risk of lithium plating. LiFePO4 tolerates -20\u00b0C discharge but may still need heating for charging. A datasheet claiming -20\u00b0C to +55\u00b0C with Li-ion should show a battery heater or restricted charge range.<\/p>\n
Trade Terms and Export Practicalities<\/h3>\n
FOB (Free On Board)<\/strong> means the supplier delivers to the port of departure, clears export customs, and loads the container. Risk transfers when goods cross the ship’s rail. Buyers arrange ocean freight and insurance. For emergency lighting, FOB Shenzhen or FOB Ningbo is standard; the port choice affects inland trucking cost from factory.<\/p>\n
CIF (Cost Insurance Freight)<\/strong> adds ocean freight and marine insurance to the supplier’s scope. The buyer still handles import clearance and port charges. CIF suits buyers without freight forwarder relationships but removes control over carrier selection. For lithium battery shipments, some carriers restrict acceptance; confirm the supplier has booked IMDG-compliant vessels before accepting CIF terms.<\/p>\n
CFR (Cost and Freight)<\/strong> is identical to CIF except the buyer arranges insurance. Rare in lighting trade but occasionally requested by buyers with existing marine policies.<\/p>\n
EXW (Ex Works)<\/strong> places all transport risk and cost on the buyer from the factory door. Only accept EXW if you have a China-based logistics agent who can manage export clearance and truck to port. Most battery-containing emergency drivers require UN 38.3 documentation that Chinese customs scrutinise; an inexperienced buyer under EXW terms faces detention risk.<\/p>\n
L\/C (Letter of Credit)<\/strong> protects both parties through bank intermediation. The supplier ships against documents; the buyer’s bank pays on presentation of compliant bills of lading, packing list, certificate of origin and test reports. L\/C adds 0.5-1.5% bank charges and demands precise document matching. For first orders above USD 50,000, L\/C is common with Middle Eastern and African buyers.<\/p>\n
T\/T (Telegraphic Transfer)<\/strong> in 30% deposit, 70% against copy of bill of lading is standard for established relationships. New buyers should insist on 30\/70 T\/T with shipment inspection or escrow for initial orders. Some suppliers offer OA 60 or 90 days for distributors with credit history; this is a qualification signal of manufacturer financial health, not a trading office.<\/p>\n
HS code<\/strong> for emergency lighting drivers is 8504.40 (static converters), for complete emergency luminaires 9405.10, for LED strips 8541.40. Correct classification determines duty rate and whether the product falls under China export VAT rebate categories. A supplier who cannot state the HS code confidently may be reselling without customs experience.<\/p>\n
CE and UKCA marking<\/strong> are declarations of conformity, not certificates issued by third parties. For emergency lighting, the relevant harmonised standards are EN 60598-2-22 (luminaires), EN 61347-2-7 (emergency lighting DC supplies), EN 62034 (automatic test systems), and EN 1838 (lighting application). The supplier must hold a technical file and Declaration of Conformity; ask to see the DoC with standard list and notified body numbers where applicable. UKCA requires UK-recognised standards and a UK-based responsible person from 2025 for most product categories. Do not accept a CE certificate as proof of UKCA compliance.<\/p>\n
UN 38.3 battery test report<\/strong> is mandatory for lithium battery air freight and required by many ocean carriers. The report covers crush, thermal, altitude simulation and forced discharge tests on the cell and completed battery pack. It expires if cell design or battery management changes. Ask for the report number, test laboratory (SGS, T\u00dcV, Intertek or CNAS-accredited), and verify it covers the exact part number in your shipment. A generic cell report does not cover a completed pack with protection circuit.<\/p>\n
Packing list and certificate of origin<\/strong> complete customs documentation. The packing list must show carton dimensions, gross and net weight, and itemised contents for customs valuation. Certificate of origin (Form A, EUR.1, or CO) determines preferential duty rates under trade agreements. For UK imports post-Brexit, a non-preferential CO is standard unless claiming under developing country scheme.<\/p>\n
Supplier Qualification Checklist<\/h3>\n
SMT and assembly capacity<\/strong> separates manufacturers from trading offices. Ask for photos of the SMT line, AOI station and reflow profile records. A real factory can show you the pick-and-place programme for your specific PCB. Partnered SMT is acceptable if the partner is named and visitable; hidden subcontracting adds quality risk.<\/p>\n
Battery sourcing and traceability<\/strong> requires cell manufacturer documentation, incoming inspection records, and batch coding on finished packs. Traceability back to cell lot is essential for recall management. A supplier using unbranded cells or refusing cell source disclosure is a red flag.<\/p>\n
Discharge and duration test records<\/strong> should show 100% of production tested at full load for the rated duration, or at least a defined sampling plan with AQL limits. Ask to see the test station: ageing racks with temperature logging, timed cut-off verification, and lumens measurement at end of discharge. A manufacturer without dedicated ageing capacity is assembling, not verifying.<\/p>\n
Ageing and hipot test stations<\/strong> confirm reliability. Ageing at +45\u00b0C for 4-8 hours catches early component failures. Hipot (dielectric withstand) at 1.5kV AC or 3kV DC verifies isolation between mains and output circuits. EN 60598-2-22 requires 500V DC insulation resistance minimum; hipot is the production screen.<\/p>\n
Third party test reports for the destination market<\/strong> must match the standards your inspector will reference. For UK projects, ask for EN 60598-2-22 and EN 1838 test reports with UKAS or equivalent accreditation. For UAE, Civil Defence approval may be required beyond CE. For Australia, AS\/NZS 2293.2 compliance with SAA or equivalent marking. Never accept a report for a different model or standard version.<\/p>\n
Sample lead time<\/strong> indicates production reality. A manufacturer with in-house SMT and battery pack assembly should deliver samples in 7-14 days for standard builds. A 45-day sample lead time suggests ordering from a distant subcontractor or building cash flow through deposits.<\/p>\n
Payment structure<\/strong> signals financial health. 100% advance payment is standard only for custom tooling or very small orders. 30\/70 T\/T is normal production terms. Requests for 50% deposit with 50% before shipment, or insistence on L\/C for small orders, may indicate liquidity constraints.<\/p>\n
After-sales engineering capability<\/strong> matters when a project fails commissioning. Ask how the supplier handles field failure analysis: do they request the returned unit, perform root cause, and issue 8D reports? A trading office forwards complaints to the factory with delay. A manufacturer has test engineers who can replicate the fault and modify firmware or component values.<\/p>\n
\nSMT and assembly stage of the Emergency Lighting production line<\/figcaption><\/figure>\n
Emergency Lighting Price and What Drives It<\/h2>\n
\n\n
\n
Class<\/th>\n
Typical Rating or Output<\/th>\n
Duration or Runtime<\/th>\n
Indicative FOB USD<\/th>\n<\/tr>\n<\/thead>\n
\n
\n
Basic LED exit sign, non-maintained<\/td>\n
80\u2013120 lm, 8\u201312 m viewing distance<\/td>\n
90 min<\/td>\n
4.50\u20137.50<\/td>\n<\/tr>\n
\n
Standard bulkhead emergency luminaire, non-maintained<\/td>\n
300\u2013500 lm, ~10\u201315% of normal output<\/td>\n
90 min<\/td>\n
12.00\u201318.00<\/td>\n<\/tr>\n
\n
High-output bulkhead or downlight kit, maintained<\/td>\n
Battery cells and third-party approval testing are normally the two largest line items on any emergency lighting product. Everything else is negotiable; these two are not.<\/p>\n
Battery pack<\/strong> \u2014 typically 30\u201345% of ex-works material cost. A NiCd 3.6V 1500mAh pack for 90-minute exit sign duty costs less than a LiFePO4 6.4V 3000mAh pack delivering 3 hours at 5W, which in turn costs less than a Li-ion 18650 11.1V 2200mAh configuration for full-power maintained output. LiFePO4 offers 500\u2013800 cycles versus 300\u2013500 for quality NiCd or 400\u2013600 for Li-ion 18650, but the upfront cell cost is higher and the energy density lower, so the pack is physically larger. UN 38.3 testing for lithium cell transport adds $400\u2013$800 per battery type to supplier certification overhead, and IATA\/IMDG restrictions mean lithium shipments often move by sea freight only, extending lead time 25\u201335 days versus 7\u201310 days for NiCd by air.<\/p>\n
Driver and inverter electronics<\/strong> \u2014 15\u201325% of material cost. The constant-current inverter stage must hold output within \u00b110% across the battery discharge curve. For a 10W emergency load, this means a regulated output window of roughly 9\u201330V DC at 350mA, or 18\u201342V at 240mA, depending on LED string configuration. The changeover relay for maintained wiring adds $1.20\u2013$2.50; self-test microcontroller with EN 62034 compliant auto-test scheduling adds $3.50\u2013$6.00; DALI-2 emergency interface with addressable status reporting adds $8.00\u2013$14.00.<\/p>\n
LED package<\/strong> \u2014 8\u201315% for luminaires with integrated emergency function; negligible for standalone emergency drivers where the OEM supplies the main LED module.<\/p>\n
Enclosure and hardware<\/strong> \u2014 10\u201318%. IP65 polycarbonate versus IP20 ABS adds $2.50\u2013$4.00. IK08 impact rating versus IK07 adds machining cost for thicker wall sections.<\/p>\n
Test and certification cost amortised over batch<\/strong> \u2014 5\u201312% depending on order volume. A single EN 60598-2-22 and EN 1838 test sequence at a Notified Body runs $8,000\u2013$15,000. Spread across 5,000 pieces, this is $1.60\u2013$3.00 per unit. Across 500 pieces, $16.00\u2013$30.00. UL 924 testing for North American market runs $15,000\u2013$25,000 per product family. AS\/NZS 2293.3 compliance for Australia requires local accredited lab testing, typically $10,000\u2013$18,000.<\/p>\n
Assembly labour<\/strong> \u2014 6\u201310% at current South China rates. Emergency products require more skilled labour than standard luminaires: battery pack welding, inverter calibration, and 100% discharge duration test before packing.<\/p>\n
Export packing, inland freight, sea\/air freight, insurance<\/strong> \u2014 8\u201314% combined. Lithium restrictions mean many factories consolidate lithium orders to FCL sea shipment only, raising inventory carrying cost for buyers who need mixed-container flexibility.<\/p>\n
Destination duty, VAT, clearance<\/strong> \u2014 varies by market. UK\/EU: typically 2.7\u20134.5% duty plus 20% VAT on CIF value. Middle East Gulf: 5% VAT, minimal duty. Brazil, Nigeria: 15\u201335% duty plus local taxes.<\/p>\n
Why the Cheapest Quote Is Cheaper<\/h3>\n
The lowest FOB price in any comparison normally reflects one or more of the following: a smaller capacity cell (NiCd 2.4V 600mAh instead of 3.6V 1500mAh, cutting duration from 90 minutes to 45\u201360 minutes under real load); reduced emergency output level (5% of normal instead of 10% or 100%, failing EN 1838 minimum illuminance requirements for the space type); or an untested design using generic driver firmware without EN 62034 self-test validation or third-party witness testing.<\/p>\n
A supplier quoting 30% below the table ranges above should be asked directly: what is the battery chemistry and capacity in mAh? What is the emergency output in lumens and as percentage of normal? Has a Notified Body or ILAC-accredited lab issued a test report for the destination market’s required standards? If the answer is pending or internal-only testing, the buyer carries the compliance risk.<\/p>\n
Supplier Qualification Checklist<\/h3>\n
Real manufacturing capacity versus trading office:<\/p>\n
\n\n
\n
Checkpoint<\/th>\n
What to Verify<\/th>\n
Red Flag<\/th>\n<\/tr>\n<\/thead>\n
\n
\n
SMT and assembly<\/td>\n
In-house or contracted SMT line with ISO 9001 registration; pick-and-place for driver PCBs, reflow profile records<\/td>\n
No factory video, no equipment list, refusal of virtual audit<\/td>\n<\/tr>\n
Full-spec: Li-ion 18650 11.1V 2200mAh, DALI self-test, 3-hour duration<\/td>\n
$32.00<\/td>\n
Year 5: $10.00\/unit \u00d7 100 = $1,000 (cycle life 500)<\/td>\n
Remote DALI status polling, 0.3 hrs\/unit annual = $1,350<\/td>\n
1\u20132% annual<\/td>\n
~$8,350<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
The low first-cost option appears cheaper until labour and failure replacement are included. At 100 units, the break-even against mid-range occurs between 18 and 24 months. For installations where access for testing is difficult (warehouses, atria, tunnels), self-test capability pays back faster through reduced labour.<\/p>\n
Lead Time and Order Structure Reality<\/h3>\n
Standard tooled products with no customisation: 25\u201335 days ex-factory after deposit, plus 25\u201335 days sea freight to UK\/Europe or Middle East Gulf. Air freight for NiCd products: 7\u201310 days door-to-door, but roughly 3.5\u00d7 sea freight cost per kilogram. Lithium products by air: restricted to cargo aircraft only on many routes, with dangerous goods surcharge of $2.50\u2013$4.00\/kg, and some carriers refuse entirely.<\/p>\n
Custom colour, silkscreen logo, or modified battery duration: add 10\u201315 days for cell procurement and driver firmware adjustment. New housing tool for OEM private label: $4,000\u2013$8,000 amortised over first order, 35\u201350 days to first samples.<\/p>\n
MOQ for factory-direct emergency products: typically 500\u20131000 units per model for branded cell and full test documentation. Smaller quantities often ship with generic cells and without updated third-party reports, or carry 15\u201325% unit price premium.<\/p>\n
Samples of standard range: $45\u2013$120 per unit including courier, normally available within 10 working days against pro-forma payment. Sample credit against first production order is standard practice for qualified projects.<\/p>\n
Payment terms for new export accounts: 30% deposit, 70% against fax or scanned B\/L copy. Letter of credit at sight accepted for orders above $30,000, with confirmation charges typically split 50\/50. Open account terms require 12\u201324 months trading history and credit reference.<\/p>\n
\nFinished Emergency Lighting packed in export cartons ready for palletising<\/figcaption><\/figure>\n
Industry Applications for Emergency Lighting<\/h2>\n
\n\n
\n
Sector<\/th>\n
Typical Installation<\/th>\n
Recommended Specification<\/th>\n
Why This Product Fits<\/th>\n<\/tr>\n<\/thead>\n
\n
\n
Commercial Offices and Fit-Outs<\/td>\n
Recessed LED panels, surface-mounted bulkheads, exit signs above doorways<\/td>\n
3-hour duration, 10% to 100% maintained output, AC 220-240V input, LiFePO4 3.2V 3000mAh, self-test or DALI, IP20 to IP44<\/td>\n
Open-plan spaces need uniform escape-route illumination; maintained wiring allows normal and emergency operation from same fitting<\/td>\n<\/tr>\n
Emergency twin spotlights on high masts, flameproof exit signs, LED high-bay emergency drivers<\/td>\n
90-minute duration, 50W emergency output at 15% to 20% normal, AC 85-265V, LiFePO4 3.2V 6000mAh or 12.8V 9000mAh, IP66 IK10<\/td>\n
Hazardous atmospheres and high mounting require robust housings; high-wattage drivers match existing high-bay LED loads<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Commercial Offices and Fit-Outs<\/h3>\n
Open-plan offices in London or Dubai typically specify 3-hour duration to comply with BS 5266-1 for deep buildings with phased evacuation. A maintained LED panel running 40W normal might carry an emergency driver delivering 4W to 10W emergency output, roughly 10% of normal luminous flux, from a LiFePO4 3.2V 3000mAh pack. The self-test facility under EN 62034 automates the 30-second functional and 3-hour duration checks, reducing facilities-management labour. Buyers should request discharge test records showing the battery reached 3 hours at 25\u00b0C ambient before the pack voltage dropped below the inverter cut-off. Charge time to 90% capacity is typically 24 hours for this chemistry.<\/p>\n
Hospitals and Clinics<\/h3>\n
Operating theatres and intensive-care corridors require 100% maintained output so that switching to battery causes no perceptible drop in illuminance. A changeover relay rated for the LED driver’s DC output window\u2014commonly 25V to 42V at 350mA to 700mA constant current\u2014transfers the load to the inverter within 0.5 seconds, meeting EN 1838 for critical areas. The battery pack may be LiFePO4 3.2V 6000mAh configured 4S2P for 12.8V nominal, supporting 20W to 40W emergency output for the full 3 hours. Buyers should verify the supplier holds discharge-and-duration test records for each batch, not just prototype reports, because hospital commissioning agents routinely audit this documentation.<\/p>\n
Warehouses and Logistics Centres<\/h3>\n
A 15m-high distribution centre in Rotterdam or Johannesburg needs emergency twin spotlights or high-bay emergency drivers that deliver 10W to 50W at the inverter, representing 10% to 25% of a 200W normal high-bay LED load. The Li-ion 18650 7.4V 4400mAh pack, or larger LiFePO4 assemblies, must survive 0\u00b0C to 40\u00b0C ambient in rack aisles. IP65 and IK08 are minimum specifications here; anything lower risks dust ingress and impact damage from pallet-handling equipment. Ask the supplier whether the inverter output is truly constant-current or merely resistive-ballasted, because voltage sag on cheaper designs can drop LED efficacy by 20% over the discharge curve.<\/p>\n
Car Parks and Stairwells<\/h3>\n
Underground car parks in Singapore or Frankfurt normally mandate 3-hour duration per EN 60598-2-22 because smoke clearance and evacuation may take extended time. A 500-lumen bulkhead at 5W emergency output from a NiCd 3.6V 1500mAh pack meets minimum escape-route levels, but LiFePO4 3.2V 3000mAh is increasingly specified for its 500 to 800 cycle life versus 300 to 400 for NiCd. IP65 is non-negotiable in stairwells subject to hose-down cleaning. The manual test key remains common in this sector because DALI infrastructure is rarely installed in older buildings being retrofitted.<\/p>\n
Hotels and Residential Common Areas<\/h3>\n
BS 5266-1 and NFPA 101 both emphasise maintained operation in hotel lobbies and corridors where guests are unfamiliar with the building layout. A 2-hour duration is standard in many Middle Eastern jurisdictions, satisfied by LiFePO4 3.2V 3000mAh driving 3W to 5W emergency output at 10% of normal flux. Self-test is preferred to minimise disruption of occupied rooms. The supplier should demonstrate ageing-test records: 72 hours at 40\u00b0C ambient to accelerate electrolyte degradation, followed by a full duration discharge to confirm capacity retention above 80% of rated.<\/p>\n
Industrial Plants<\/h3>\n
Petrochemical and heavy-manufacturing sites often specify 90-minute duration per UL 924 or AS\/NZS 2293 rather than 3 hours, but demand higher absolute output\u201450W emergency from a LiFePO4 12.8V 9000mAh pack\u2014because mounting heights of 20m to 30m dilute luminous intensity at ground level. IP66 and IK10 protect against pressure-washing and mechanical shock. The constant-current inverter must match the high-bay driver’s output window precisely; a 25V to 54V range at 1050mA is typical for 150W-class LEDs. Buyers should ask for third-party test reports covering the destination market’s voltage and frequency: 230V 50Hz for Europe, 277V 60Hz for parts of the Middle East, 220V 60Hz for Southeast Asia. A manufacturer with in-house SMT and battery-assembly capability can reconfigure packs and driver firmware for these variants without the 6-week re-sourcing delay typical of trading offices.<\/p>\n
Ordering and Importing Step by Step<\/h2>\n
The three mistakes that most often leave a delivered batch unusable are easy to prevent with specification discipline before the PO is issued. First, an output window that does not match the host fixture\u2014fix this by recording the existing driver’s DC output range and matching the emergency inverter’s output window exactly. Second, a duration or illuminance level below local code\u2014fix this by stating the required emergency duration in minutes and the minimum maintained illuminance in lux on the PO, not assuming 90 minutes covers every jurisdiction. Third, missing lithium battery or conformity documentation at customs\u2014fix this by requiring UN 38.3 test summary reports and the correct conformity mark on the shipping invoice before cargo moves.<\/p>\n
Host Fixture Audit and Driver Matching<\/h3>\n
Record the host fixture type, wattage and driver architecture before selecting any emergency module. A 40W LED panel with a 36-42Vdc 900mA constant current driver needs an emergency inverter with a matching output window, not a generic 12-80Vdc unit that may fall out of regulation at the low end. Key data to capture:<\/p>\n
CC inverters for COB and SMD arrays; CV for LED strips and some linear modules<\/td>\n<\/tr>\n
\n
Output window<\/td>\n
DC V and mA or V and W<\/td>\n
Must align with inverter output; e.g. 9-42Vdc 200-700mA or 24-80Vdc 100-500mA<\/td>\n<\/tr>\n
\n
Physical space<\/td>\n
mm available inside fixture<\/td>\n
Battery pack and inverter PCB must fit; LiFePO4 3.2V 3000mAh packs are larger than Li-ion 18650 3.7V 2600mAh equivalents<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
For luminaire OEMs adding emergency versions, the same inverter platform often covers multiple fixtures if the output window is wide enough. Ask whether the supplier builds the inverter with programmable output zones or fixed taps. Programmable units reduce SKU count but add a configuration step; fixed taps are faster to install but require tighter matching.<\/p>\n
Duration Emergency Output and Local Code Requirements<\/h3>\n
Confirm the required duration and emergency output level before pricing. The standard 90-minute duration applies under EN 60598-2-22 and BS 5266-1, but projects in parts of the Middle East and Southeast Asia increasingly specify 120 minutes or 180 minutes for high-occupancy or infrastructure buildings. EN 1838 specifies minimum maintained illuminance on escape routes: 1 lux on the centre line for open corridors, rising to 2.5 lux for anti-panic areas, with uniformity ratios that affect spacing and output, not just duration.<\/p>\n
Emergency output is expressed as a percentage of normal output or as absolute lumens. A typical maintained emergency module delivers 10% to 30% of normal output; for a 4000lm panel, this means 400lm to 1200lm in emergency mode. Non-maintained units must reach full output within 5 seconds of mains failure per EN 62034. State both the percentage and the absolute figure on the PO. A supplier quoting “3W emergency output” without lumens or percentage leaves ambiguity that becomes expensive if the fixture fails commissioning.<\/p>\n
Maintained Versus Non-Maintained Wiring<\/h3>\n
Choose maintained or non-maintained based on the application and wiring available. Maintained emergency keeps the LED energised continuously via a changeover relay, switching to battery on mains failure; it requires a permanent live, switched live and neutral at the fixture. Non-maintained leaves the LED off during normal operation and energises only on failure; it needs only permanent live and neutral, with lower wiring cost but no visual indication of lamp integrity during normal hours.<\/p>\n
For retrofit projects with only two-core cable in the ceiling, non-maintained is often the only practical option. For new-build commercial schemes where lighting control zones are specified, maintained wiring with DALI self-test capability allows central monitoring but adds \u00a38-\u00a315 per point in cabling and commissioning. State the wiring method on the PO; the supplier must configure the changeover relay and terminal block accordingly.<\/p>\n
Test Facility Selection<\/h3>\n
Decide between manual test key, self-test or DALI before ordering. Manual test key is lowest cost and meets minimum compliance, but relies on site staff to perform the monthly flick test and annual duration test. Self-test modules with EN 62034 compliance automate this, typically running a brief discharge every 30 days and a full duration test annually, with LED status indication on the module. DALI self-test integrates into building management systems, reporting individual luminaire status to a central head end; the module must carry a DALI interface and addressable memory.<\/p>\n
The cost step-up is roughly: manual test key as base, self-test adds 15-25%, DALI adds 30-40% over manual. For a 500-luminaire hotel or hospital, DALI self-test reduces labour cost in year one but requires commissioning software and trained staff. Specify the test facility by standard reference, not by generic description.<\/p>\n
Mains Voltage Frequency and Regional Configuration<\/h3>\n
Confirm mains voltage and frequency for the destination market. Common configurations include:<\/p>\n
Input voltage range affects inverter design. A true 100-277Vac universal input covers North American commercial 277V circuits and European 230V without separate SKUs, but the EMI filter and surge components are larger and costlier. A 220-240Vac single-range unit is cheaper but limits market flexibility. State the required input range explicitly; “universal” is not a specification.<\/p>\n
Conformity Marks and Third Party Test Reports<\/h3>\n
Confirm the conformity mark and test report the destination market requires. Customs and local inspectors expect:<\/p>\n
\n
CE marking<\/strong>: valid for EU and EEA; requires EN 60598-2-22 and EN 1838 test reports from a notified body or accredited laboratory<\/li>\n
UKCA marking<\/strong>: required for Great Britain post-Brexit; based on same standards but with UK-recognised body<\/li>\n
UL 924<\/strong>: for US and Canadian markets; covers emergency power supplies and exit signs with fire safety ratings<\/li>\n
G-Mark<\/strong>: Gulf Technical Regulation for low voltage equipment; mandatory for Saudi Arabia, UAE, Kuwait, Qatar, Bahrain, Oman<\/li>\n
AS\/NZS 2293<\/strong>: Australian and New Zealand emergency lighting standard; requires local certification body involvement<\/li>\n<\/ul>\n
Do not accept a supplier’s claim of certification without requesting the test report number, issue date, and testing laboratory accreditation. For lithium battery emergency units, the report should cover the complete system, not just the bare cell. Ask for the report to be emailed before sample order, not promised with shipment.<\/p>\n
IP Rating and Ambient Temperature for Mounting Position<\/h3>\n
Check IP rating and ambient temperature range for the mounting position. Typical ratings:<\/p>\n
Sealed LiFePO4 with potted PCB<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
High ambient temperature shortens battery cycle life. A Li-ion 18650 pack rated 500 cycles at +25\u00b0C may deliver 200 cycles at +45\u00b0C. LiFePO4 tolerates +55\u00b0C with less capacity fade but costs 20-30% more per watt-hour. If the fixture is recessed in an insulated ceiling void, measure the void temperature in summer; it often exceeds room ambient by 10-15\u00b0C.<\/p>\n
MOQ Sample Approval and Mass Production Timing<\/h3>\n
Agree MOQ and sample approval before mass production. Typical structures:<\/p>\n
\n\n
\n
Item<\/th>\n
Typical Range<\/th>\n
Notes<\/th>\n<\/tr>\n<\/thead>\n
\n
\n
Sample lead time<\/td>\n
5-10 working days<\/td>\n
For standard configurations; custom output windows or markings add 5-7 days<\/td>\n<\/tr>\n
\n
Sample cost<\/td>\n
$50-200 per unit<\/td>\n
Usually credited against first production order above 100 units<\/td>\n<\/tr>\n
\n
MOQ for standard models<\/td>\n
100-500 units<\/td>\n
Lower for exit signs, higher for custom inverter modules<\/td>\n<\/tr>\n
\n
MOQ for OEM custom<\/td>\n
500-1000 units<\/td>\n
Tooling for housing or label may be separate<\/td>\n<\/tr>\n
\n
Mass production lead time<\/td>\n
25-35 days<\/td>\n
After sample approval and deposit; peak season adds 10-15 days<\/td>\n<\/tr>\n
\n
Payment structure<\/td>\n
30% T\/T deposit, 70% against B\/L copy<\/td>\n
Or L\/C at sight for orders above $50,000; samples typically 100% advance<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Require that the production sample is built from the same battery batch and PCB revision as mass production. Some suppliers show a golden sample with hand-selected cells, then ship production with different cell grades. Seal the approved sample or photograph the battery cell markings, PCB silkscreen version, and firmware revision.<\/p>\n
Batch Duration Test Records and Factory Process Verification<\/h3>\n
Require batch duration test records as part of acceptance criteria. A real manufacturer maintains:<\/p>\n
\n
Aging test station<\/strong>: 100% of inverters run at rated load for 1-2 hours at +25\u00b0C ambient to catch infant failures<\/li>\n
Hipot test<\/strong>: dielectric withstand at 1500Vac or 3000Vac per IEC 61347, depending on insulation class<\/li>\n
Duration discharge test<\/strong>: sample or 100% of finished units run for full rated duration, e.g. 90 minutes at declared emergency load, with voltage and lumen output logged<\/li>\n
Battery traceability<\/strong>: cell supplier, batch code, capacity test date, and internal resistance recorded per pack<\/li>\n<\/ul>\n
Ask for a factory process description, not just a certificate. Trading offices often forward certificates from unrelated factories; a manufacturer can describe the test station layout, the software used for DALI address programming, and the quarantine procedure for failed units. Request video or live video call if site visit is not practical.<\/p>\n
Lithium Battery Shipping Documents and Freight Mode<\/h3>\n
Arrange lithium battery shipping documents and the correct freight mode. UN 38.3 testing is mandatory for lithium ion and lithium metal cells and batteries in transport; the test summary report must accompany shipment and state:<\/p>\n
\n
Test items: altitude simulation, thermal test, vibration, shock, external short circuit, impact\/crush, overcharge, forced discharge<\/li>\n
Watt-hour rating per cell and per battery pack<\/li>\n
Packaging compliance with PI 965, PI 966 or PI 967 as applicable<\/li>\n<\/ul>\n
Freight mode restrictions:<\/p>\n
\n\n
\n
Mode<\/th>\n
UN 38.3 Required<\/th>\n
Typical Limit<\/th>\n
Documentation<\/th>\n<\/tr>\n<\/thead>\n
\n
\n
Air freight (IATA)<\/td>\n
Yes<\/td>\n
35kg net lithium per package; often 30% freight surcharge<\/td>\n
Shipper’s declaration, MSDS, test summary<\/td>\n<\/tr>\n
\n
Sea freight (IMDG)<\/td>\n
Yes<\/td>\n
No net weight limit but proper shipping name required<\/td>\n
Dangerous goods declaration, test summary<\/td>\n<\/tr>\n
\n
Courier (DHL\/FedEx)<\/td>\n
Yes<\/td>\n
Varies by destination; often 2-5kg per package<\/td>\n
Pre-approved shipper account, full test summary<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
For orders above 500 units with LiFePO4 3.2V 3000mAh packs (roughly 9.6Wh each), sea freight is usually mandatory. A 40-foot container holds approximately 25,000-30,000 emergency units on pallets; air freight for this volume is prohibitively expensive and may be refused. Plan freight mode at quotation stage, not after production is complete.<\/p>\n
Carton Pallet Packing and Labelling<\/h3>\n
Specify carton and pallet packing and labelling. Standard practice:<\/p>\n
\n
Inner carton<\/strong>: 10-20 units per carton, with individual polybag or foam wrap; carton dimensions and weight marked for manual handling limits (typically 15-20kg gross)<\/li>\n
Outer carton<\/strong>: 5-ply corrugated for sea freight, 3-ply acceptable for air; humidity indicator if shipping through tropical ports<\/li>\n
Pallet<\/strong>: 1.0m x 1.2m Euro pallet or 1.1m x 1.1m Asia pallet; maximum 800-1000kg per pallet; stretch-wrapped with corner boards<\/li>\n
Labelling<\/strong>: product code, quantity, gross\/net weight, country of origin, lithium battery handling label if applicable, conformity mark as required by destination<\/li>\n<\/ul>\n
For fragile components like emergency exit sign legends or polycarbonate diffusers, require individual compartment packing or face-to-face separation with paper interleaving. Damage rates on sea freight from Southeast Asia to Europe or Africa can reach 3-5% with inadequate packing; this is a supplier qualification point, not an insurance matter.<\/p>\n
Commissioning and First Annual Test Plan<\/h3>\n
Plan commissioning and the first annual test before shipment arrives. The supplier’s responsibility ends at functioning product; site compliance depends on correct installation and testing. Require the supplier to provide:<\/p>\n
\n
Wiring diagram showing maintained or non-maintained connections, changeover relay contacts, and test switch loop<\/li>\n
DALI commissioning guide if applicable, with default address map and failure code definitions<\/li>\n
Recommended commissioning test sequence: functional test at full duration, illuminance measurement with calibrated lux meter at designated test points, recording of initial battery voltage and discharge end voltage<\/li>\n
First annual test date, triggered automatically by self-test module or entered into facility management calendar<\/li>\n<\/ul>\n
For projects under BS 5266-1 or EN 50172, the log of initial commissioning tests is required for building control sign-off. Ask the supplier for a template test log or software export format. This is often the difference between a supplier who ships components and one who supports the application.<\/p>\n
Final Checklist Before Issuing the Purchase Order<\/h3>\n\n
Record host fixture LED load in watts, forward voltage range in Vdc, and driver current in mA<\/li>\n
Specify emergency duration in minutes and emergency output as percentage and absolute lumens<\/li>\n
Select maintained or non-maintained wiring; confirm cable cores available at mounting point<\/li>\n
Choose manual test key, self-test per EN 62034, or DALI self-test with address range<\/li>\n
Confirm nominal mains voltage, frequency, and required input voltage range in Vac<\/li>\n
Identify destination conformity mark and request test report with laboratory accreditation<\/li>\n
State required IP rating and ambient temperature range; select battery chemistry accordingly<\/li>\n
Agree sample lead time, MOQ, production lead time, and payment terms in writing<\/li>\n
Require factory process description for aging, hipot, and duration test; request batch test records with shipment<\/li>\n
Confirm UN 38.3 test summary exists; select sea or air freight based on battery watt-hours and volume<\/li>\n
Specify carton quantity, pallet configuration, and shipping marks; include lithium battery labels if required<\/li>\n
Request commissioning documentation and plan first annual test date before installation begins<\/li>\n<\/ol>\n
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