The WAGAN 25A DC to DC Battery Charger is designed to accurately and safely charge auxiliary batteries. It ensures your batteries are kept at optimum performance levels that will enhance their performance and extend their lifespan. The WAGAN charger can be used with standard and Smart Alternator systems and is perfect for use with solar systems and those choosing not to utilize solar charging. The charger uses a high speed microcontroller and a proprietary charging algorithm to deliver a sophisticated 3 stage charging process.