1. test polymer li-ion battery, NI-MH battery, Ni Cd battery, power, adapter, power bank. 2. charging and discharging functons About RFNT4 Universal tester:RFNT4 is a multi-function testing, repairing tools,It compatible multi-kind re-changeable batteries , like electric tools batteries, laptop batteries, mobile power bank batteries, DV batteries ,Camera batteries ,AAA batteries ,and so on. It ...