... proceed, otherwise, the following may damage the controller. 2. Connect “+” and “-”poles of solar panels with the correct ports on the ... 12Vor all 24V.2. The rated current of solar panels and load must be less than the reted current of controller. Parameter: ... *35mmTemperature coefficient of voltage stop charge-3mV/°C/cell Solar Regulator 10A, 12/24v, Solar Charge Controller, charging battery, PWM, new