Sofirn 18350 850mAh Flat Rechargeable Li-ion Battery - 3.7V Flat-Top High-Capacity Cell

Enhance your compact flashlights with the Sofirn 18350 850mAh flat rechargeable lithium-ion battery — a dependable flat-top cell built for reliable power in short-body torches, EDC lights, and devices using the 18350 format. Featuring a nominal capacity of 850mAh (minimum 800mAh at 0.2C discharge) and 3.7V nominal voltage, this battery delivers excellent runtime in a small, lightweight package.

The flat-top configuration provides broad compatibility with flashlights and mods that accept flat-top 18350 cells, ensuring stable contact and easy integration as a drop-in replacement for CR123A-sized applications.

Detailed specifications:

• Nominal capacity: 850mAh (0.2C discharge)
• Minimum capacity: 800mAh (0.2C discharge)
• Nominal voltage: 3.7V
• Charge voltage: 4.2V ± 0.03V
• Discharge cut-off voltage: 2.75V
• Standard charge current: 0.2C (0~+45)
• Standard discharge current: 0.2C (-10~+60)
• Rapid charge current: 0.5C (0~+45)
• Rapid discharge current: 0.5C (-10~+60)
• Maximum discharging current: 5C (limited to 2.75V cut-off)
• Internal resistance: 35m (at AC 1kHz)
• Operating temperature (charge): 0~+45
• Operating temperature (discharge): -10~+60
• Rechargeable: Yes

With a 5C max discharge rating, this cell handles moderate to higher-drain loads effectively, supporting brighter outputs in compatible compact flashlights. Its wide temperature tolerance makes it suitable for outdoor use in diverse conditions, while the low internal resistance helps maintain efficiency during operation.

Important safety and usage notes: Charge exclusively with a lithium-ion charger compatible with 18350 cells, adhering to the specified currents (0.2C standard or 0.5C rapid). Never exceed 5C discharge, short-circuit, puncture, crush, over-discharge below 2.75V, or expose to excessive heat, water, or fire. Use in devices with proper protection circuits (many compact lights feature built-in protection). Store partially charged in a cool, dry environment. Avoid mixing with non-rechargeable batteries or incompatible chemistries.

Compact size, solid capacity, and strong performance — the Sofirn 18350 850mAh flat battery is the perfect power solution for your small, high-performance flashlights!

INCLUDED:

1pc 18350 battery