11 Amp Solar Charge ControllerAny solar panel that is rated 12 watts or higher requires the use of a solar charge controller to regulate the current and voltage going to the battery. This 11 Amp Charge controller can handle up to 165 Watts of Solar array. Solar charge controllers are for permanent installation and should be installed close to the battery in a dry and ventilated area. Maximum Input Power: 165W Maximum Input Current: 11A Cut In Voltage: 13V Cut Out Voltage: 14. 2V