New Chemical LiFePO4 Li-Ion battery * Rechargeable LiFePO4 RCR123A 3.0V 750mAhBattery * Life cycle: 2000 times (Traditional Li-ion: 500 times) * Never explode or catch fire * 100% Compatible with Disposable CR123A Batteries * NOT COMPATIBLE WITH SUREFIRE FLASHLIGHT. Don't use there batteries with any SureFire flashlights. * Working Voltage:3.2V and Peak Voltage: 3.6V * Charging cut-off voltage: 3.6V * Discharge cut-off voltage: 2.2V o Please never overdischarge battery below 2.2V/cell o Charge the this battery with LiFePO4 RCR123A smart charger. * # Capacity: Nominal: 450mAh Maximum:750 mAh * Maximum discharging rate:< 550 mA * Maximum charge current: <550 mA * Cell's dimension: 17mm Dia. x 34.5mm H. * Weight: 0.6 oz (18 grams). **This RCR123A battery is Lithium Ion rechargeable chemistry. The full charge voltage is higher than average voltage of one-time use Lithium CR123A batteries (3.0V). Certain flashlights and devices are designed for Primary Lithium CR123A batteries and may not be compatible with rechargeables. It is the buyer's responsibility to be aware of the requirements and limitations of their device before use. Any damage to the devices is not covered by Tenergy warranty. If you do not agree with these conditions, please return this product immediately before use.