... tester LCD display Function: test, charge,discharge,50% cha&disc, intelligent protection universal external laptop battery tester LCD display ... Function: test, charge,discharge,50% cha&disc, intelligent protection laptop battery testerModel NO.: RFNTFunction:*Charge:Active, ... 8.8h Time limit for testing: 20s + 10s = chg + disc Time limit for capacity correction: 8.8h + 20s + 8.8h ...