My Grandfather just purchased a cheap solar panel kit for his ranch that could not muster enough power to run his mini fridge.

He has two 6 volt batteries running positive to negative and would like to add more batteries. Probably 12volt. How would he go about hooking up the other batteries and what kind of wire or coil should he use.

Also, I saw on youtube a guy recommending a lead-acid battery from walmart for under . I was just going to go to ecology and just pick up some used batteries but I may be wrong.

Any help for a first timer might help me and my gramps out will be appreciated.

Thank you

I have just read an ad for Power4Home solar panel kit, and was wondering if there is an independent review for it. All the reviews are obviously written by Power4Home themselves, including "comparisons" of other DIY kits. Has anyone actually bought these books and been able to come close to building a solar panel with "parts available from the hardware store" as claimed? Photovoltaic cells are expensive, yet they claim it can be done for about 0.
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price, cost, solar panel kit
I am building a house, I would like to put solar panels on the roof so I could cut bills in half.