Dee Bee has posted a link in another thread but I am putting it here so It will come up in a search.
http://www.ccis.com/home/mnemeth/12volt/12volt.htm
Wonder if someone


Thanks
Miriam
Edit A flaw was pointed out so I am putting it in here too.

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GeorgeTelford wrote:
Hi
That site offers a broad picture, its not totally accurate, but does give a fair approximation of what goes on.
.... the diagrams showing battery interconnection are not done the best way (ie the first and second battery in the paralell diagram will charge and disharge a differeent rates thus causing imbalance and early death of the batteries)
Dee Bee Wrote:
George
You are right, I appreciate the expertise that electricians and engineers bring to this forum. But I really knew nothing about batteries and 12 volt things. I found this aritcle a great introduction inspite the errors you mentioned. After a while i saw these same things, too. I think the batteries should be shown as follows:
But all in all for the novice like me, it is a good place to begin
Dee Bee