Caricabatteria 54.6V 48V XLR Caricabatteria di Ricambio 54.6 Volt Uscita 1.5A per 48V 13S...
When charging, first connector to the battery, then connect to AC; after full, cut off AC, then pull the battery plug. Otherwise the battery cannot. the battery beforeusing it. Make sure your battery is not broken.