If youve been searching for a solar controller that reigns supremacy in energy conversion, this solar MPPT controller by ATEM POWER must be the top candidates on your list. Supported by innovative MPPT tech to rapidly track and capture the maximum power point of multi wave peak, this MPPT controller delivers up to 94% energy conversion efficiency, higher than 75% of PWM solar controllers. Not only that, but this controller comes packed full of safety protections, including reverse polarity, over-charge/discharge, over load/temperature, backfeeding (night) & short circuit protection. Featuring the cover which protects terminals against corrosion and shorting, this MPPT controller is made of tough ABS housing with upgraded aluminum heat sinks. This durable unit is a great addition to any solar panel system for its multi-stage properties that better support batteries and compatibility with a variety of lead acid deep cycle batteries and LiFePO4 batteries.