... avoid over charge3Protection of over current,over voltage and short-circuit, safe and reliable4transfer efficiency 90%~98%,power factor≥0.9 ... ,high efficiency5LED indicator,metal case,nice and sturdy,durable in use6CE(Europe),PSE(Japan),ROSHWe set the shut off point ... -floating charge. High quality ,12V/24V bike battery charger,made in china