The TrustFire protected 10440 Lithium battery is equipped with a protection circuit board (PCB) on the negative pole. The PCB can protect the battery from overcharge、 over-discharging、 overload and short circuit、 which can make the battery safer and longer lifespan. The battery is environment friendly and perfect for super bright flash and other devices.<br /><br />- With integrated PCB Protection<br />- Over current protection current: 4A<br />- Over current protection voltage: 0.2V<br />- Over charging protection voltage: 4.25V +/- 25mV<br />- Over discharging protection voltage: 2.5V +/- 50mV<br />- Lithium Ion 10440 cylindrical rechargeable batteries<br />- Lighting or other device needing 3.7V power<br />- Product print '600mAh'、 the exact capacity is 350mAh<br /> <br /> The TrustFire protected 10440 Lithium battery is equipped with a protection circuit board (PCB) on the negative pole. The PCB can protect the battery from overcharge、 over-discharging、 overload and short circuit、 which can make the battery safer and longer lifespan. The battery is environment friendly and perfect for super bright flash and other devices.<br /><br />- With integrated PCB Protection<br />- Over current protection current: 4A<br />- Over current protection voltage: 0.2V<br />- Over charging protection voltage: 4.25V +/- 25mV<br />- Over discharging protection voltage: 2.5V +/- 50mV<br />- Lithium Ion 10440 cylindrical rechargeable batteries<br />- Lighting or other device needing 3.7V power<br />- Product print '600mAh'、 the exact capacity is 350mAh<br />                                                                                                                                Dimensions: 1.81 in x 0.39 in x 0.39 in<br />Weight: 0.67 oz