[Ducati750cc]

My understanding is that the 12s won’t make a warm fridge cold, but it will keep an already cool fridge at temperature.


It should, but it depends on the voltage at the fridge heater element terminals, to see if you have excess volt drop, due to cable length, cable too thin, poor connections, get the car running at a fast idle, prop the accelerator pedal slightly or get some to hold it at approx 2,000rpm, measure the voltage at the battery terminals, say 14v, then measure the voltage at the fridge 12v heater element terminals, if all's well you should get at least 12.5v to 13v, anything less and the fridge will barely cool or maintain a low temperature, if at all.


It's not unknown due to length of cable, inadequate size, corroded connections to see 10v at the fridge, obviously it wont cool, but folk say it should do because there is 14.5v at the battery, its whats at the fridge that counts.