It was a long trip (9 weeks) for the package that would wait for China's 2 weeks leave (China's New Year) and also the extra leave that the virus caused. Now I have tested it and it is to the full satisfaction. The package was in double cartons, everything was well packed
ship very fast, about 15days from China to italy, but I need a long run test... something confusing me. with 12v output, battery is charge at 14.5v. this charging voltage seems a bit too high for standby usage....
board work bad... the output when AC input off is unregulated... a relè onboard simply switch ( very slow ) the battery to output, so in the output you haven't 12v but the battery voltage. and float voltage too high