What Emergency Light Covers
GB 17945-2024 lifted rated backup to 90 minutes with stricter degradation and documentation rules, industrial sites add dust, chemical and explosion-hazard requirements, and transport hubs add 24/7 supervision and audit documentation. PLB builds LiFePO₄ emergency lighting batteries on self-developed 26650 cells: 36V and 48V packs holding 80% or more of rated capacity over five years, a backup-duration test report for every unit, CCC and CE with EN 61347, RS485 / Modbus monitoring for central management, and IP65 or Ex d IIC T6 versions for harsh and hazardous areas. One supplier from cell to certified pack — commercial, industrial and transport.
Six Emergency Light Sub-Scenarios
Each sub-scenario page covers the pain points that scenario faces, how PLB helps you solve them, a comparison table and the recommended models — so you can compare and choose faster.
Commercial Building & Mall Emergency Light
Compliance-first replacement for property management: 90-minute rated backup, a test report for every unit and 78% lower five-year TCO across a 300-lamp estate.
Industrial Plant & Warehouse Emergency Light
Rugged packs for dust, corrosion and cold storage: IP65 sealing, 500-hour salt-spray testing and a −30 °C to 65 °C wide-temperature version that replaces five separate SKUs.
Transport Hub Emergency Light
Metro, rail and airport installations with AI degradation prediction, N+1 redundant backup switching in under 0.5 seconds and one-click audit reporting.
Tunnel & Bridge Emergency Light
Ten years without replacement in tunnels, on bridges and along coastal roads: IP67 with UV and salt-spray protection, and zero road closures for maintenance.
Mine & Underground Emergency Light
Intrinsically safe Ex ia packs for methane environments: IP68 potted against 100% humidity and coal dust, with no underground maintenance visits at all.
Petrochemical Emergency Light
Ex d IIC T6 for every hazardous area including hydrogen: IP67 with triple coating and gold-plated terminals, one model for the whole plant.
From Selection to After-Sales — PLB Stays With You
Four commitments that apply to every page in this category, from the first technical question to long-term support.
Technical Selection Support
Engineer recommends within 24 hours
Tell us the number of lamps, the required duration and the installation environment — our engineers size the pack and recommend the matching model within 24 hours.
Dedicated technical team · 24-hour response
OEM / ODM Customization
From cell to cabinet, fully customizable
From cells, BMS, housing and terminals to the nameplate, everything can be customized.
4–8 week customization · Tooling development supported
Global Shipping
Export to 100+ countries
Export-compliant packaging with UN 38.3 air transport certification and worldwide delivery.
UN 38.3 certified · MSDS available · Export compliant
Warranty & Support
Standard warranty, lifetime support
Standard products carry a full warranty, backed by lifetime technical support.
Warranty terms on request · Lifetime technical supportWhy Choose PLB?
Years of Manufacturing
Founded in Dongguan, China in 2014
Countries Served
Export-compliant packaging and worldwide delivery
Voltage Platforms
From 25.6V to 512V, built on the same cell platform
After-Sales Rate
Monitored by the internal quality traceability system
Full Range & Model Selection
Complete product range and model selection — commercial wall and ceiling units, industrial IP65 versions, explosion-proof enclosures and N+1 hub panels for transport.
| Model | Rated backup | Form factor | Environment | Applications |
|---|---|---|---|---|
| LL-EL90-36 | 90 min | Wall · ceiling | 0–40 °C indoor | Commercial buildings · malls |
| LL-EL90-48 | 90 min | Wall · ceiling | 0–40 °C indoor | High-rise · large floor plates |
| LL-EL90-36S | 90 min | Wall · ceiling | 0–40 °C indoor | Smart version · RS485 to BA |
| LL-EL-IND60 | 60 min | Wall · pole | Dusty · corrosive | Factories · warehouses (IP65) |
| LL-EL-EX60 | 60 min | Ex enclosure | Zone 1 / 21 | Hazardous areas · petrochemical |
| LL-EL-WT90 | 90 min | Wall · ceiling | −30 to 65 °C | Cold storage + hot workshop |
| LL-EL-HUB90 | 90 min | Hub panel | 0–40 °C indoor | Metro · airport N+1 redundant |
| LL-EL-SMART90 | 90 min | Wall · ceiling | 0–40 °C indoor | ISCS-connected hub lights |
By project size: single floor → LL-EL90-36.
By environment: commercial interior → LL-EL90 series.
Not sure? Send us the number of lamps, the required duration and the installation environment — our engineers will size the system directly.
Frequently Asked Questions
The questions lighting contractors and safety managers ask most about LiFePO₄ emergency-lighting batteries in the Emergency Light scenario — 36–48V (system voltage) and 90 min (rated backup), and what it takes to qualify.
Will a PLB pack replace the lead-acid unit in the Emergency Light scenario without rework?
The 36 V and 48 V packs match common lead-acid emergency-lighting voltages with the same terminal layout and mounting, and the BMS manages charge limits so standard emergency-lighting chargers can be used. For Emergency Light builds the range starts at LL-EL90-36 and LL-EL90-48, specified at 36–48V (system voltage) and 5-year (80%+ capacity).
What runtime and output can we expect over a discharge cycle in the Emergency Light scenario?
The pack holds its rated backup duration for the full service life instead of losing capacity after the first year, which is where lead-acid normally fails inspection. Key figure: 90 min (rated backup).
What temperature and ingress rating is specified for the Emergency Light scenario?
Sealed construction and wide-temperature cells cover the ambient range of the installation, with BMS thermal protection.
Can the pack report SOC and alarms to monitoring already used in the Emergency Light scenario?
RS485 and Modbus report per-lamp status into the site or building management system, with degradation warnings and one-click audit exports.
Which models cover the Emergency Light scenario, and how is delivery handled?
Typical models are LL-EL90-36 and LL-EL90-48. Custom packs take 4–8 weeks including tooling, and lead time for standard models is confirmed on the quotation. Tell us the number of lamps, the required duration and the installation environment — our engineers size the pack and recommend the matching model within 24 hours.
Need a Selection Recommendation?
Tell us the load, backup time and installation space — our engineers will recommend the matching battery within 24 hours.
NDA available upon request · Typical response within 12 hours