Battery Model: EPT 3.7V 4000mAh 507685 Li-Polymer Battery
Battery Dimension: Thickness 5.0, Width 76.0, Height 85.0 (Max, mm)
Nominal Voltage: 3.7V
Nominal Capacity: 4000mAh, 0.2C discharge
Internal Resistance: ≤150mΩ
O.C.V: ≥3.7V
Charge Cut-Off Voltage: 4.2V
Discharge Cut-Off Voltage: 3.0V
Standard Charge: Under 23℃±2℃ charge to 4.35V at 0.2C CC(Constant Current), then CV(Constant Voltage 4.35V)charge until charge current ≤0.02C.
Charge Current: Standard charge: 0.2C Fast charge: 0.5C
Charge Time: Standard charge: 5.5h~6.5h, Rapid charge: 1.5h~2.5h
Maximum Charge Current: 1.0C (10℃～45℃)
Standard Discharge Current: -10℃～55℃(Constant Current 0.2C Cut-off Voltage: 3.0V)
Maximum Discharge Current: 1.0C
Operating Temperature: Charge: 10℃ ~ 45℃ max. 85% RH, Discharge: -10℃ ~ 55℃ max. 85% RH
Lithium Battery Protection: Overcharge protection, over discharge protection, discharge over current protection, discharge short circuit protection, etc.
Battery Features: High safety, long cycle life, high discharge efficiency at high temperatures
Application: Lighting fixtures, high temperature lamp
3.7V 4000mAh 507685 High Temperature Lamp Li-Polymer Battery
Standard Li-Po batteries often swell in solar-heated or high-intensity lamp housings. The EPT 507685 high-temp cell is formulated to address thermal stress, maintaining chemical stability where standard cells fail. With 4000mAh capacity, it ensures long-lasting illumination in harsh climates. It solves the pain point of field failures in outdoor lighting, allowing for compact designs without bulky heat dissipation hardware.
• Thermal Resistance: Specialized electrolyte and separator technology for stable operation in high-temp environments.
• Energy Density: High 4000mAh capacity in a slim 507685 pouch format (approx. 5.0mm thick).
• Application Range: Optimized for solar lighting, high-intensity lamps, and industrial IoT sensors.
• Safety Certified: Integrated protection against thermal runaway and over-voltage conditions.
• B2B ROI: Extended service life in harsh conditions reduces long-term maintenance and replacement costs.
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