The PowerMax Converter/Charger converts 120 VAC to 12 VDC to fully charge and maintain any battery type, while providing clean DC power for 12V equipment. The PM3-35LK features a built-in 35 Amp automatic 3-stage smart charger with the ability to manually adjust the charging voltage for different battery types. It can also function as a power supply with its adjustable fixed output mode, which can be set between 13.0 and 16.5 VDC. | PowerMax Wireless Power Center - 55A