La Crosse Technology BC1000 Alpha Power Battery Charger Works with all nicd and nimh "aa" and "aaa" rechargeable batteries Lcd shows capacity for each battery when charging is complete Charges aa and aaa rechargeable batteries simultaneously Select different charging current for each channel: charge, discharge, refresh, test; automatically switches to trickle charge when charging is complete to ensure maximum battery capacity Overheat detection to protect over-charging Works with all nicd and nimh "AA" and "AAA" rechargeable batteries; charges AA and AAA rechargeable batteries simultaneously LCD shows capacity for each battery when charging is complete Select different charging current for each channel: charge, discharge, refresh, and test. Automatically switches to trickle charge when charging is complete to ensure maximum battery capacity Overheat detection to protect over-charging