... 30 seconds, you can tell the connection is correct; the following operation can be proceed, otherwise, the following may damage the controller ... . 2. Connect “+” and “-”poles of solar panels with the correct ports on ... 95*35mmTemperature coefficient of voltage stop charge-3mV/°C/cell Solar Regulator 10A, 12/24v, Solar Charge Controller, charging battery, PWM, new ...