La Crosse Technology BC-700 Alpha Power Battery Charger: http://www.amazon.com/Crosse-Technology-BC-700-Battery-Charger/
Product Features
Battery charger for NiCad and NiMH AA and AAA rechargeable batteries
Features 4 modes: charge, discharge, refresh, and test
Charges both AA & AAA rechargeable batteries simultaneously
4 separate LCD displays for simultaneous readouts
Overheat-detection to prevent over-charging