13.5v Auto Voltage sensing controller ideal for dual battery to control relay LED LIGHT -Fake Philips Xenon lamps are

-Fake Philips Xenon lamps are an ever-increasing problem

} Here we have on offer is White Waterproof Solar Panel Double Cable Entry Box Ideal for Roof of Caravan (1pc)

Color:  Green

Bolt terminal: #10-32

Total Size: 15mmx22mm x 43mm High

13.5v Auto Voltage sensing controller ideal for dual battery to control relay LED LIGHT -Fake Philips Xenon lamps areHere we have a 12v Voltage controller. This controller is connected to your main battery and senses when the voltage reaches 13. 5v by your alternator charging, Connect the trigger wire from the controller to activate your Dual battery Relay or solenoid and away you go. Wired as the above way you can then have both your main and auxiliary batteries charging automatically when your vehicle is running and then when your main battery drops below 13. 5v