Energizer CHP4WB4 Recharge Smart AA/AAA Charger with 4 AA NiMH Batteries: Electronics for $15.76 + free shipping
Charges batteries at a safe, steady rate which improves the long-term health of the NiMH battery
Bad battery alert and shuts off if non-NiMH or old NiMH battery is attempted.
ENERGY STAR certified
The batteries are 1400 mAh