Intelligent digital displaycar Automatic data display carousel, can display / current / voltage / power supply easy to use: accurate CPU temperature control, intelligent charging, no setting required, automatic charging when the battery is low connected to the power supply terminals red to connect the battery positive (+) black with clamp for mounting the battery negative (-) Pure copper high-frequency transformer: powerful charging Multiple protection Over voltage protection, reverse polarity protection (for positive and negative connection faults) Short circuit protection, over current protection, over temperature protection, over voltage protection Applicability It is strictly prohibited to charge the lithium battery. Suitable for 12V-24V 6AH-150AH lead-acid batteries (AGM, GEL, MF, SLA, VRLA), can diagnose and repair battery problems in cars, trucks, motorcycles, lawnmowers or boats, and extend battery life Voltage and power detectionConnect the battery without connecting the power, it can display the remaining battery voltage. Keep track of your battery status and see if you need to charge. Smart charging, automatic shutdown when fully charged, repair button Cooling fanThere is a cooling fan at the bottom of the charger, which can be used to extend the life of the charger in conjunction with an aluminum radiator.