2550mWh USB Rechargeable AA Lithium Battery Double AA Rechargeable Batteries USB
2550 mWh (1.5V/1700 mAh) typical actual capacity. No need to buy a large alkaline battery. Constant 1.5V output: Hixon USB C Lithium AA batteries support a constant 1.5V output. Ideal for household appliances that require an AA battery.