Quote:
Originally Posted by sgt_doofey
The Kings fridge I have allegedly uses approximately 1Ah when just cycling normally when not being opened too much (Secop compressor). So the 75Ah battery should be ok for overnight. The Kings 60L fridges are apparently a rebadged Waeco fridge.
I will be having drinks in an esky to minimise opening of the fridge throughout the day.
The 150w solar panel is rated to a max of 8.33A, obviously in perfect conditions. Even at 20% capacity, it should be around the 2Ah mark, so should be able to keep up. (Fingers crossed!)
The times I've used the fridge on the battery so far has been whilst I've been playing cricket. For about 4 hours of usage, the battery voltage is only dropping to about 12.9V, and I don't have the solar panel on it either.
I understand that the battery is probably a little on the low side for Ah for what I intend to do, but it's all I can afford for now. I'll see how it goes and I'll upgrade at some stage in the future. It's a start and I can always update going forward. If I had the money, I would have shelled out for a LiFePO lithium, but they are still very expensive.
I'll keep the battery on the solar charger at home. That does float charging.
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Think of battery's as a water storage container and the wires as hoses. 75Ah hold less power than a 105Ah (like a 10 litre jerry holds less than a 20 litre jerry). The more watts the solar panel produces is the time to charge, so a 50w solar panel will charge, but much slower than a 300w solar panel.
The science isn't that hard, you just need to make sure that the juice going in is replacing the juice going out plus some