Specifications: Charges Battery Types: AA/AAA - NiCd and NiMH Input Voltage for AC/DC Adapter: 100-240 VAC (works only with included AC/DC Adapter) Charging Current Range: 200 mAh, 500mAh, or 700mAh Max Charging Capacity: 3000 mAh All Features: 3 Easy Steps to Renewable Power: 1.Insert battery (batteries) 2.Select Mode: Charge,Discharge/charge,Refresh/charge, Test/charge 3.Select Rate: 200mAh,500mAh, or 700mAh Works with all NiCd & NiMH AA/AAA Rechargeable Batteries Automatically switches to trickle charge when charging is complete to ensure maximum battery capacity Automatically defaults to 200mA charge (the optimal setting for prolonging battery life) Overheat detection to protect over-charging Charges AA & AAA rechargeable batteries simultaneously Will not charge defective batteries Select different charging current for each channel When charging is complete, LCD shows capacity in mAh for each batteryharges in two hours Dimensions: 130 x 75 x 40 mm