CB series battery charger can use for car battery, lead acid battery and other 12V battery. CB sereis battery charger1, PWM technology, High frequency design, Compact Size2, ... Over-current, Output Low Voltage, Short Circuit, Battery Reverse Connection., Output cut off when battery is disconnected.6, Smart cooling fan, start ... for long run.7, Output: 24VDC, charging current: 20A MAX. Battery Charger