Tuesday, Apr 03, 2018 at 11:29
"To only use 1 ah to 1.5 ah your fridge must be very efficient indeed. Especially being an 80 litre on. A 40 litre Engel can't even approach that low usage. I would suspect your fridge is using at leat double what you think it is, Maybe more."
I agree. If the manufacturer's blurb says it uses an average of 1 to 1.5 amps then a reasonable assumption is that those figures represent 50% duty cycle in mild conditions over 24 hours. IE, in mild
test conditions the fridge actually runs for 12 hours a day. Taking the worst case, 12 hours run time at 1.5 amps gives a consumption of 36 amp-hours - which the manufacturer averages out over 24 hours. But it also means that WHILE RUNNING, the fridge is drawing 3 amps, not 1.5.
In warm and hot conditions the fridge will be running considerably more than the manufacturer's favourable advertised average, and pulling 3 amps, not 1.5. It's then easy to see where the power might be going.
There are too many assumptions here for this to be definitive. We really do need some hard figures to be of real help.
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