New Edition Voyager 20A PWM Waterproof Solar Charge Controller Featuring a blue back-lit LCD displaying system information including error codes, the Voyager is engineered to be of world-class quality. Not only is it waterproof, but it is also equipped with advanced PWM technology suitable for 12V and 24V off-grid applications, and compatible with 4 different battery types, including Lithium! Ensure your system's longevity and stay worry-free as the Voyager also has you covered with multiple solar panel, battery, and controller protections. Key Features 12V/24V Battery Compatibility with Auto Recognition. Smart 4 Stage PWM charging: Bulk, Absorption, Float, and Equalization. 4 Battery Type Compatible – Sealed/AGM, Gel, Flooded, and Lithium batteries, with Lithium Awakening feature. Watertight design with Backlit LCD display for system information including error codes. Multiple Protections for Battery, Controller, and Solar Panels including reverse polarity and more.