Vivitar 2-Hour AC/DC NiMH Battery Charger, Charges 2 or 4 AA/AAA Batteries, 2100mAh Capacity

This unit will charge your batteries in 2 hours. Subsequent charges will not reduce batteries' capacity through memory buildup, unlike conventional NiCD batteries. It charges 2 or 4 batteries at the time. The LED lights will be red while charging batteries and will turn green when fully charged.