Searon LCD Battery Capacity Indicator with Voltmeter function for 12V 24V 36V and 48V Battery LCD Battery Capacity Indicator with Voltmeter function for 12V 24V 36V and 48V Lead-acid storage battery, GEL battery, LiFeO4 battery,AGM battery and other batteries Has a user mode that lets you set them as you wish. Settable charging Voltage to matching users' batteries. Real-time Display Current Batteries capacity level using a 10 segment bar graphs Recognition false battery charging signals function. only if the batteries voltage higher than the voltage of charger, meter will indicate full charge Restore factory defaults function to help clear the data easily