TrustFire Protected 10440 600mAh 3.7V Rechargeable Batteries (2 pack).

Fits the Precise 10440.

With integrated PCB Protection

• Over current protection current: 4A
• Over current protection voltage: 0.2V
• Over charging protection voltage: 4.25V +/- 25mV
• Over discharging protection voltage: 2.5V +/- 50mV
• Lithium Ion 10440 cylindrical rechargeable batteries
• Lighting or other device needing 3.7V power
• Product print '600mAh', the exact capacity is 350mAh