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Keeppower P1634U1 RCR123A Micro USB 16340 3.0V 860mAh Rechargeable Battery
* Quality Protected Li-ion Rechargeable Battery
* Brand: KeepPower
* Part No.: P1634U1 RCR123A
* Maximum Size: (D)16.7*(L)36.0mm(±0.2mm)
* Nominal Voltage: 3.0V
* Nominal Capacity: 860mAh
* Weight: 20.0g
●  Part No.: P1634U1 (RCR123A 860mAh)
●  Protected 16340 Li-ion Rechargeable Battery
●  Minimum Capacity: 860mAh
●  Typical Capacity: 900mAh
●  Normal Voltage: 3.0V
●  Standard Continuous Charging Current: 350mA (by USB)
●  Maximum Continuous Discharging Current: 1.5A
●  In Built Safety Circuitry
●  Protection Circuit (Against over charge, over discharge, over current and short-circuit.)
●  Charge Voltage by USB: 5V
●  Over 300 charge-discharge cycles

Update with: higher quality button toplights prompt for charging status, better dimension fits for more devices