AdirPro BC 27CR Charger for Topcon BT-50Q, BT-52Q and BT-52QA batteries Equivalent to Topcon BC-27CR charger 2-hour max charging time Input: 85-265V; 50-60Hz Output: 8.4V Charges a single battery at a time Works with Topcon BT-50Q, BT-52Q and BT-52QA batteries