Hi guys,
I have a fridge in my car, unfortunately when I leave it on for 5 hours the battery becomes completely empty. The car battery is old (7 years).
I'm looking for a switch that cut of the power when it reach a certain (low) voltage, so my battery will always have enough current to start the car. Is there any device switch with a small lcd screen showing the voltage ?
I would like to buy it from Aliexpress.
The fridge is a 5A 12V
Thnx.