... off automatically after full charging2Lockgp of current and voltage with high-accuracy,be sure of full charge and avoid over ... current,over voltage and short-circuit, safe and reliable4transfer efficiency 90%~98%,power factor≥0.9,high efficiency5LED indicator,metal case,nice ... and can also adjust as CC- CV- minor CC- high CV-floating charge. High quality ,12V/24V bike battery charger,made in china