We've just put up this off-grid solar system with an 80W solar panel charging a couple of 12V batteries which are connected in parallel to form a total current of 72amps. And we've got this connected to a 300W (with 600W surge) pure sine wave power inverter.
Now the fridge (Severin KS 9827) is quite small and needs just 300W per day i.e. the running power is that of 300/24=12.5 W. The manual does not actually give you the surge power it needs to start up but I found out that fridges need about 10 times the running power to start up but we're well covered in that case by the inverter.
Is it possible that the problem arises from the batteries since they are not new and perhaps there is not enough power? Or could it be because the batteries are connected with a 4mm wire which is too thin in this case? Note that there are 10 batteries in all connected in parallel.
I appreciate any suggestion. Thanks.