Voltage: 1.45VEnvironmentally friendly batteries - mercury-free (0% Hg)
12-year Expiration dateExpiry date: 2030
expiry date: 2029
battery charging time 2300mAh - 60 min
4 independent charging channelsprocessor; Ni-MH, 4xR6/AA,R03/AAA;+ 4 Energizer R6/AA 2300 mAh batteries