... (RS-232) Test Condition Without Shutting Down Battery. Simultaneously Measure Battery Resistance, Voltage, Current, Temperature. Auto-hold ... Interface Storage Battery Systems Battery Capacity Testers, Check battery condition in seconds, with the battery in service! Battery Types Tested ... Supply or AC AdapterSix AA size 1.5V alkaline batteriesBattery Life5.5 hoursWeight Approx. 530g including ...