Ea elektro automatik ea bc 500 lead acid battery chargers 12v 48v ea elektro automatik 35 320 136 this ea bc 512 11 rt 11a lead acid battery charger 12v from ea elektro automatik is a high quality device suitable for charging lead acid batteries up to 300ah the unit operates according to the i u u characteristic and starts in constant current mode after achieving a cell voltage of 237v a timer is started and switches the unit to constant voltage mode boost charging mode after one hour