The JBC350 from jWIN is an AC/DC two way rapid USB charger. Charge up to 4 Ni-MH or Ni-CD rechargeable AA or AAA (batteries are not included). Charge or power any devices with USB port from USB adapter, car charger or PC (Car charger is not included). Charge other rechargeable devices through the USB (5V) (Requires 4 batteries (AA or AAA) in the battery holder) It"s lightweight and compact in size for portability and easy storage.