Absolute Thermal Safety: Industrial-grade 26650 LFP chemistry prevents thermal runaway up to 600°C; absolutely no fire or explosion under mechanical impact.
Zero-Swell Float Charging: Low self-discharge allows years of maintenance-free float charging on docks with zero swelling.
Stable 3.2V Output: Flat discharge curve ensures full LED brightness without dimming until completely depleted.
Engineered for the Extremes: Intrinsically Safe 3.2V LiFePO4 Power
Zero thermal runaway, a perfectly flat discharge curve, and over 2,000 cycles. The heavy-duty explosion-proof power solution for chemical, mining, and emergency rescue lamps.
🛡️ Section 1: Rethinking Safety in Hazardous Confined Spaces
In hazardous industries like petrochemical plants, gas stations, and underground mines, battery safety is not a luxury—it is an absolute red line. Standard chemistries struggle under extreme conditions, where thermal runaway poses severe ignition risks. Actively solving these vulnerabilities, HiMAXBATT has engineered this high-safety 3.2V 3600mAh 1S1P LiFePO4 battery pack using premium 26650 industrial-grade cells. Built with LFP chemistry that remains stable up to 600°C, the cells resist thermal runaway even under mechanical crush or heavy impacts. Enclosed in a heavy-duty, high-visibility yellow and orange flame-retardant industrial PVC sleeve, and sealed with waterproof epoxy potting at both terminals, this pack is designed to meet strict ATEX and IECEx explosion-proof requirements for heavy-duty handheld lamps.
⚙️ Section 2: Engineered for Longevity and Seamless Integration
Emergency rescue and standby portable lighting are frequently left on charging cradles for months, which often degrades standard lithium packs. Our LFP chemistry delivers more than 2,000 cycles (at 80% Depth of Discharge) and can remain in continuous float-charge mode for up to 5-8 years without swelling or capacity collapse. Additionally, standard lithium batteries cause steady dimming as they discharge. We resolved this by integrating a high-precision analog BMS with a 55°C high-temperature thermal cutoff, ensuring a highly stable 3.2V discharge plateau that keeps LED lights at peak brightness until the charge is completely exhausted. Since LFP possesses an incredibly flat discharge curve, making standard fuel-gauge ICs unreliable, we ship this pack with a verified voltage-to-capacity reference table, allowing your engineers to easily program precise dual-color LED status indicators on the MCU. Standardized with a durable JST-SYP-2P connector and 18AWG silicone leads, and backed by certified UN38.3 and ISO9001 quality systems, this battery pack ensures reliable long-term performance in demanding field operations.
Specifications
3.2V 3600mAh 26650 LiFePO4 Battery Pack
Battery Chemistry Type
Lithium Iron Phosphate (LiFePO4 / LFP)
Cell Configuration Model
26650-1S1P Industrial Cell
Nominal Voltage
3.2 V
Rated Capacity
3600 mAh
Nominal Total Energy
11.52 Wh
Standard Charge Current
720 mA
Max. Continuous Charge Current
1800 mA
Max. Continuous Discharge Current
3600 mA
BMS Hardware Overcurrent Cutoff
10 A
BMS Overcharge Cutoff Voltage
3.65 V +/- 0.025 V
BMS Overdischarge Cutoff Voltage
2.5 V +/- 0.05 V
Finished Pack Net Weight
Approx. 95 g
Insulation & Outer Enclosure
Dual-layer Epoxy Boards + Flame-Retardant PVC
Output Interface Connector
JST-SYP-2P Red Female Plug
Data & Digital Protocol
None
Frequently Asked Questions
As a leading industrial B2B battery manufacturer, HiMAXBATT fields complex queries daily from international engineering teams and sourcing managers. We have consolidated the top 5 technical questions regarding our 3.2V LFP 26650 battery packs to assist your R&D integration.
Why is LiFePO4 chemistry preferred over NCM for confined-space explosion-proof lighting?
LiFePO4 (LFP) is intrinsically safe compared to NCM. Its thermal runaway threshold is around 600°C, whereas NCM can experience runaway at just 200°C. In sealed environments like mines and chemical tanks, standard NCM packs pose significant ignition and gas-venting risks under fault conditions. LFP prevents catastrophic failures, surviving mechanical damage and severe impacts without fire or explosion.
Our emergency handlamps remain docked on charging stations for months. Will this battery swell or degrade?
No. Standard lithium batteries suffer from electrolyte decomposition and high state-of-charge gas evolution when kept at continuous float charge. This HiMAXBATT 3.2V LFP pack features a custom BMS and highly stable electrolyte formulation designed for continuous low-current float charging. Its ultra-low self-discharge and excellent chemical stability prevent gas generation and capacity collapse, ensuring a service life of 5 to 8 years even when permanently docked.
With such a flat discharge curve, how can our MCU accurately display battery fuel gauge status?
Because LFP voltage remains extremely flat at 3.2V for over 85% of its discharge cycle, traditional voltage-based MCU algorithms often fail. To solve this design hurdle, HiMAXBATT supplies a detailed discharge step-voltage reference curve with each shipment. Your software developers can program these calibrated step-voltage thresholds directly into your MCU to drive accurate dual-color (e.g., Red/Green) state-of-charge LED indicators.
How does the integrated BMS protect the battery during high-temperature outdoor work?
Handlamps exposed to direct sunlight or industrial environments can quickly exceed safe operational limits. This battery pack is integrated with a precision BMS and an NTC thermistor that triggers an automatic shutdown if internal temperatures reach 55°C. This active safety feature prevents chemical degradation and guarantees stable, reliable operation under harsh work conditions.
What safety certifications and test standards does this battery pack comply with?
The complete battery pack holds official UN38.3 (transportation safety) and ISO9001 (factory manufacturing quality) certifications. Additionally, our design is carefully engineered to meet ATEX, IECEx basic cell requirements, UL1642, IEC 62133-2, GB 31241, and GB/T 2423 standards. The pack easily passes rigorous testing including 5mm nail penetration, 130°C thermal chambers, and 50G mechanical shock testing.
