What Industrial Factory & Warehouse Covers
Dust corrosion, chemical gases and extreme temperatures kill ordinary batteries in six months, adding ¥150,000 or more a year in replacement and production loss. PLB answers with an industrial range: IP65 fully sealed, explosion-proof certified and wide-temperature — five years with zero degradation in harsh environments.
Professional Battery Solutions
Dust & Corrosion Kills Batteries in 6 Months — What Is the Fix?
Cement plants, flour mills and chemical warehouses carry airborne dust and corrosive gases — H₂S and SO₂ at 50–200 ppm. Ordinary IP20 batteries suffer connector corrosion and PCB shorts, and life drops to 6–12 months. Every production shutdown to swap batteries costs ¥50,000–100,000, so annual replacement plus lost output far exceeds the purchase price.
PLB industrial versions use full IP65 sealing, a triple-coated PCB and gold-plated terminals, and pass IEC 60068-2-11 salt-spray testing for 500 hours with zero corrosion. Performance is unchanged after five years in chemical plants, saving ¥150,000 or more a year in replacement and production loss.
| Conventional | PLB industrial | |
|---|---|---|
| Protection class | IP20, untested | IP65 fully sealed |
| Salt-spray test | Not tested | 500 h, no corrosion |
| Performance at year 5 | Degraded, scrapped | Zero degradation |
| Annual loss | ¥150,000 or more | ¥0 |
Cannot Pass Safety Bureau Review in Ex Zones — How to Comply?
The pain is specific: Cannot Pass Safety Bureau Review in Ex Zones — How to Comply? In daily operation, lead-acid or manually managed packs lose capacity between scheduled checks, maintenance teams cannot inspect every unit, and the failure surfaces only when the load is already at risk.
PLB explosion-proof versions are certified to Ex d IIC T6 Gb and Ex tb IIIC T80 °C Db for Zone 1 and Zone 21 gas and dust hazards. PLB's LiFePO₄ pack and BMS monitor cell voltage, temperature and SOC continuously, alert before a weak cell becomes a failure, and are sized to the application's load profile.
| Conventional / manual | PLB LiFePO₄ | |
|---|---|---|
| Monitoring | Periodic checks | Continuous BMS |
| Fault warning | At failure | Threshold alerts |
| Maintenance | Scheduled visits | Exception-based |
| Service life | 2–3 years | 6,000+ cycles |
Cold Storage + Hot Workshop — Need Two Different Batteries?
The same factory often has cold storage at −25 °C to −35 °C alongside workshops above 45 °C. Ordinary batteries freeze in the cold rooms and age within six months in the heat, so procurement has to stock two or more models — doubling inventory complexity and cost.
The PLB wide-temperature version covers −30 °C to 65 °C, discharging at 75% or better efficiency at −25 °C in the freezer and keeping the full five-year life in hot workshops. One model covers every temperature zone in the plant, taking purchase SKUs from three to five down to one and simplifying inventory by 80%.
| Conventional | PLB wide-temp | |
|---|---|---|
| Operating temperature | 0–40 °C | −30 to 65 °C |
| Cold-store usability | Cannot operate | 75%+ at −25 °C |
| Purchase SKUs | 3–5 | 1 |
| TCO | High | 60% lower |
Solution Advantages
IP65 Sealed
Dust-tight and triple-coated PCB
Fully sealed IP65 construction with a triple-coated PCB and gold-plated terminals. Salt-spray tested to IEC 60068-2-11 for 500 hours with zero corrosion, delivering five years and zero degradation in chemical plants — ¥150,000 or more saved each year in replacement and production loss.
IEC 60068-2-11, 500 h salt spray · In-house sealing lineEx Certified
Ex d IIC T6 and Ex tb certified
Dual certified to Ex d IIC T6 Gb and Ex tb IIIC T80 °C Db for Zone 1 and Zone 21 gas and dust hazards. LiFePO₄ cells are non-flammable with decomposition above 300 °C, and the flameproof enclosure with energy-limiting circuit carries the bureau review in one pass.
LiFePO₄ decomposition above 300 °C · Flameproof + energy-limitedWide Temperature
Cold storage to hot workshop
Rated from −30 °C to 65 °C: normal discharge in the freezer and no derating in hot workshops. One model covers every temperature zone in the plant, cutting purchase SKUs from five to one.
3,000 cycles at 60 °C with 80%+ retention · In-house wide-temperature cells5-Year Life
Industrial-grade five-year lifespan
Five years of stable operation in harsh industrial environments, with TCO about 75% lower than lead-acid — more than ¥750,000 saved over five years in replacement and lost production.
¥150,000+ saved per year · Fully traceableFrom 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 Industrial Plants & Warehouses scenario — IP65 (sealed enclosure), and what it takes to qualify.
Will a PLB pack replace the lead-acid unit in the Industrial Plants & Warehouses 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. Typical models for Industrial Plants & Warehouses builds are LL-EL-IND60 and LL-EL-IND90.
What runtime and output can we expect over a discharge cycle in the Industrial Plants & Warehouses 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.
What temperature and ingress rating is specified for the Industrial Plants & Warehouses scenario?
Specification: IP65 (sealed enclosure). Sealed construction keeps dust and moisture out, and the BMS cuts charge and discharge at the thermal limits.
Can the pack report SOC and alarms to monitoring already used in the Industrial Plants & Warehouses 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 Industrial Plants & Warehouses scenario, and how is delivery handled?
Typical models are LL-EL-IND60 and LL-EL-IND90. 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