Thrown away half of my cables that were not even to give me 1a charge where other were at range of 2a a very good product indeed not sure if my new battery bank really is 10amps or the watt meter reading low but with out a cal check i asume this is lovely item it remember last reading between uses which is well designed works perfect used it to test a few charger cables and was amazed at the results some went straight in the bin once i realised how bad they where