4 Pack 1.5v AAA 1200mWh Lithium Rechargeable Batteries with 1.5V 1.5H Fast Battery Charger with Micro USB Cable with 1.5V Battery case Intelligent chip keeps you battery away from over current, over voltage, over charge, overheating and short circuit. 1.5v Individual Battery Charger - charge 1/2/3/4 AA or AAA batteries freely, lcd display show charging situation Fast Battery Charger: Output: (AA) 4.2V 500mA*4; (AAA ) 4.2V 500mA*4;lnput DC 5V 2A,charge aaa1200MWH only takes 1.5 hours 1.5 Volt Rechargeable Lithium Battery- 1.5v batteries and chargers have passed ROHS, CE, CQC, PSE, etc. certification. AaA lithium batteries has constant 1.5V output