3500mWh Rechargeable AA Lithium Batteries 1.5V Li-ion Battery With Fast Charger
Capacity: 3500mWh / 2333mAh. The weight is about 19g, is 20% lower than Ni-MH batteries. Input: Type-C 5V 2A. (The blue light at the positive pole of the battery is up when charging, and goes off when the battery is full).