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Battery is a very important necessity as an electrical energy storage for DC load type. If battery used continuously, the stored electrical energy will gradually depleted. So it needs to be done recharge so that DC load can still be used. The difference voltage and capacity of battery makes the charging process also requires a different voltage from each other.Like mobile charger which has 5 volt output voltage, Laptop charger has 19 volt output voltage, and some other charger with different output voltage. Based on the explanation above, in this final project proposed an adaptive power charge system for DC load applications. Systems that can perform the process of replenishment of electrical energy on batteries that have a difference in voltage and capacity through a single port at the output side. Charging system uses constant voltage method with a buck type of converter . The system will detect the load type and then perform an adaptive charging process according to the charging voltage required by the load.