Fridge operation on 12 volt
How long should a Domentic model #RM2554 operate on 24 series deep cycle battery? We bought new battery ran it off 12 volt for 2 hours and battery dropped to 11.77 volts. We have had so many issues wi...
Forum Discussion
Problem isn't the alternator keeping up, it is the factory wiring usually will not carry 100% of the frig 12v load.
When checking battery level by voltage, you need to disconnect all loads, wait a few minutes for the battery to equalize, then measure the voltage. When the load is still applied, the voltage will be much lower than true voltage.
However, a group 24 is only rated at 90A/hr. 14A for two hours is 28A/hr or about 31% of battery capacity. If the fridge was still on when voltage was measured, 11.77 would seem about right.
When checking battery level by voltage, you need to disconnect all loads, wait a few minutes for the battery to equalize, then measure the voltage. When the load is still applied, the voltage will be much lower than true voltage.
However, a group 24 is only rated at 90A/hr. 14A for two hours is 28A/hr or about 31% of battery capacity. If the fridge was still on when voltage was measured, 11.77 would seem about right.
