... battery, NI-MH battery, Ni Cd battery, power, adapter, power bank. 2. charging and discharging functons About RFNT4 Universal tester:RFNT4 is ... changeable batteries , like electric tools batteries, laptop batteries, mobile power bank batteries, DV batteries ,Camera batteries ,AAA batteries ,and so ... New Product Poloso RFNT4 Universal battery tester, power bank tester, adapter tester and other batteris