Designed to charge lithium ion batteries including LIFePO4. The Xantrex Solar PWM Charge Controller 30 features a highly-efficient PWM charging mode, designed specifically for an aesthetically clean and integrated look in an RV, boat, and truck. Intuitive and easy-to-program to get your solar system harvesting energy as quickly as possible. Equipped with best-in-class PV array and battery protections and a built-in LCD display providing real-time system data.