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

Maximize runtime in compact flashlights with the Sofirn 18350 850mAh pointed rechargeable lithium-ion battery — a high-performance button-top cell tailored for short-body torches, EDC lights, and devices using the popular 18350 format. This battery offers a nominal capacity of 850mAh (with minimum capacity of 800mAh at 0.2C discharge), providing excellent energy storage in a small package while maintaining stable 3.7V output.

The pointed (button-top) design delivers reliable contact in flashlights requiring this top style, ensuring consistent performance and easy installation. Its compact size makes it ideal for pocket-friendly lights that need more power than standard CR123A alternatives, without sacrificing portability.

Detailed specifications:

• Nominal capacity: 850mAh (tested at 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

This cell supports moderate to higher-drain applications with its 5C max discharge capability, making it suitable for brighter LED flashlights in short bursts or sustained moderate use. The wide temperature range ensures dependable operation in varied conditions, from chilly evenings to warmer days.

Important safety and usage notes: Charge only with a dedicated lithium-ion charger compatible with 18350 cells, using the recommended currents (0.2C standard or 0.5C rapid). Do not exceed maximum discharge rates beyond 5C, short-circuit, puncture, crush, over-discharge below 2.75V, or expose to extreme heat, water, or fire. Use in devices with appropriate protection circuits (many compact flashlights include built-in protection). Store in a cool, dry place, partially charged for extended periods. Avoid mixing with non-rechargeable batteries.

Compact, powerful, and built to last — the Sofirn 18350 850mAh pointed battery is your go-to for brighter, longer-lasting light in small flashlights!