Posted by Willy-N on Thursday, March 02, 2006 at 9:27PM :
In Reply to: Re: how to hook up 2 batteries in series? posted by apb (in NY) on Thursday, March 02, 2006 at 8:37PM :
If you are using both to start it with the isolator doesent help unless you have a way to tie them together when starting and disconect them when setting/running. Your right 2 battrys hooked in paralle will draw one down till it is lower then the other then it will draw down the highest one again till they both go dead over time. That is one reason it is nessasary to change them as a group and both of the same size and type when installed. If you don't keep them topped off they will go dead over time. Mark H.
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