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Protected 16340 Li-ion Rechargeable Battery
Battery type: 16340
Keeppower model: P1634C2
Minimum Capacity: 800mAh
Typical Capacity: 850mAh
Normal Voltage: 3.7V
Built Safety Circuitry
Protection Circuit (Against overcharge, over discharge, over current and short-circuit.)
4.2 volts max voltage and 3.7 volts nominal voltage
Over 300 charge-discharge cycles
Battery size: (D)16.8*(L)35.7mm (±0.2mm)