Waterproof 20Amp PWM Solar Charge Controller

Smart PWM technology, high efficiency with reawakening Lithium feature
Backlit LCD displaying system operating information and error cxxies
4 Battery Type Compatible - Gel, AGM, Flooded, Lithium
Waterproof design, suitable for indoor or outdoor use
4-Stage PWM Charging: Bulk, Absorption, Float, & Equalization