Check the listing for details. MPPT 100A 12V/24V Auto Focus Tracking Solar Panel Charge Controller Regulator US. Color: Blue, Condition: New. Listed at 9.27 USD. 【High Quality Solar Charge Controller】 Our Solar Controller Mppt technology is to detect the maximum charging current,not the boost type or the automatic charging of the solar panel voltage. Compared with normal solar charge controller, this controller could increase efficiency by 10%-30%. 【Multi-function LCD Displays】This controller is 12V/24V automatically adapt,first connect the battery,then connect the solar panels,when you first use it, make sure the battery has enough voltage,so that the controller can recognize the correct battery type. 【Industrial-grade Master Chip】16AD sampling accuracy, temperature Charging current, discharge current accurate real-time display, power generation at a glance. 【Professional After-sale Service】You can contact us if you have any questions, we have the.