a freind asked me to test their costco cat jump box. i used my chinese battery tester and it said it was good , but the resistance was 45 milli ohms. i hood it up to my HF toaster tester which is supposed to put a 100 amp load on it and it read bad battery. went down to 9 volts from 12.6 .
i know these things jsut have a small battery in them , but how do i test them other than what i have done? the compressor and led light etc all seem to work
i know these things jsut have a small battery in them , but how do i test them other than what i have done? the compressor and led light etc all seem to work