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I am going to Fraser Island in February and was curious to know how many amps my fridge drew from my aux battery.
Searching thebay I found a little power meter thing that could calculate amps,watts battery voltage etc.
I hooked it all up and started timing the 24hr at 730pm,the fridge internal temp was 29degrees,the thermostat set to 2 degrees.
As a worst case scenario I did the test with an empty fridge cause I know it takes more to keep cool empty so it would leave a little buffer in the real world(half beer half food)
After 24hrs on a hot day(34degrees,still 30 at 730pm) the draw was 31.55a/h,probably a bit more than I expected but gives me a good indicator for battery preservation and probably explains why my last 100ah marine battery lasted 12months.
Hope this is helpful
That seems really high. My 60 litre wouldn't be any where near that. Do you pre cool it on mains first ?
From ambient to 2 degrees, on a 34 degree day with an empty compartment I actually thought it was low useage esp for a danfoss style Compressor.
It is only around 1.3 amp/hours for a fridge pulling down over 30 degrees.
The factory rating is .8 amp/hours on less load and nominal voltage.
For a Waeco thats not bad power figures IMHO.
Last edited by the evil twin; 17th January 2015 at 01:46 AM.
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Originally Posted by lucus30
