Hitech 12 Bay Battery Charger for Aa - Aaa - 9V Batteries 10 bay charger for AA and /or AAA plus two 9V batteries For rechargeable Ni-MH and/or Ni-Cd batteries Individual charge circuits allow mixing different battery types and sizes Auto detects and charges both Ni-Cd and Ni-MH batteries at the same time Computer controlled with Negative Delta V (-V) cut off detection