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 MPPT controller could increase efficiency by 10%-30%.Multi-function LCD DisplaysThis 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.Reliable ProtectionThis controller has perfect SOC function, control charge current, and supply power to the loads.Prevent the battery from over-charging , over-discharging and reverse charging to solar panels during nights.Professional After-sale ServiceWe have the most professional technicians to answer your questions at any time, you don't have to worry about encountering problems that you can't solve, we are always at your service.NOTEThis is a compatible MPPT charge controller PWM intelligent / efficient / energy saving. Notcie: not true MPPT ,there is no large transformer coil inside