DC100A/200A/250A car battery charger is suitable for 12V/24V GEL and AGM batteries, and cannot charge lithium batteries. Can automatically recognize battery voltage, PWM pulse modulation four stage charging; It has reverse connection, short circuit, and overcharge protection, and the intelligent temperature control fan automatically starts when the body temperature exceeds 113 ° F. It also includes a repair mode that can handle severely depleted batteries with voltages below 8V, but if the battery is completely damaged, it cannot be repaired.