2x 3.7V 2800mAh Lithium Li-ion 16340 Battery CR123A Rechargeable Batteries, pila cr123a
Battery Type: 3.7V ICR16340 2800mAh Li-ion Rechargeable Battery Model: ICR 16340 3.7V Lithium Li-ion Mod Battery Voltage: 3.7V Storage Voltage: 3.7-3.9V Charging Cut-off Voltage: 4.2V Discharge Cut-off Voltage: 3.0V
Source: viewngr.com