Used Arbin Instruments BT-2000Arbin Instruments BT 2000 Battery Tester. Channels: 1 4. High: + 10A. Medium: + 1A. Voltage: 3 30V. Each channel is a true potentiostat and galvanostat which provides both voltage and current control for all charging and discharging requirements. The BT 2000 can handle both rechargeable and primary battery applications for all chemistries. Each test channel operates independently from the other enabling different test runs. 220V, 3 Ph, 50 60 Hz, 12A.