A nickel–metal hydride battery, abbreviated NiMH or Ni–MH, is a type of rechargeable battery. NiMH use positive electrodes of nickel oxyhydroxide (NiOOH), like the NiCd, but the negative electrodes use a hydrogen-absorbing alloy instead of cadmium. A NiMH battery can have two to three times the capacity of an equivalent size NiCd.
The charge times for Nickel Metal Hydride Ni-Mh batteries
AA Battery Type Ni-MH 1300 mAh charge time required : 6.5 hours
AA Battery Type Ni-MH 2000 mAh charge time required : 10.0 hours
AA Battery Type Ni-MH 2100 mAh charge time required : 10.5 hours
AA Battery Type Ni-MH 2300 mAh charge time required : 11.5 hours
AA Battery Type Ni-MH 2500 mAh charge time required : 12.5 hours
AA Battery Type Ni-MH 2800 mAh charge time required : 14.0 hours
AAA Battery Type Ni-MH 700 mAh charge time required : 6.0 hours
AAA Battery Type Ni-MH 900 mAh charge time required : 7.5 hours
