Battery package that runs and charges a USB device wherever you are. Powered by 4 x AA Ni-MH/NiCd batteries or 4 x AA alkaline batteries (not included). With battery indicator. Switch between Ni-MH/NiCd batteries (green) and alkaline batteries (blue). Input voltage: 5 V DC. Output voltage: approx. 5 V DC. Output current: 800 mA.