Kodak Max K2000 Battery Charger with 4 NiMH AA Batteries Lightweight, portable, and easy to use High-rate, high-capacity Ni-MH technology; Single charge lasts up to twice as long as ordinary Ni-MH technology Auto shut-off feature and reverse-polarity protection as well as over-voltage and over-current protection safety limits Quick charges any combination of 4 AA or 4 AA Ni-MH or Ni-Cd batteries in less than 3 hours More than 800 charge/discharge cycles and no memory effect