1,used for 60v lead acid battery 2,constant charging voltage 74v 3,out put power 740w 4, ... 1, In put range 220 VAC, frequency range 43HZ~60HZ.2, Short-circuit protection available.3, using high-tec CPU, providing ... to FG) insulation resistance 1500v surface temperature ≤50 °C 60v lead acid battery charger