[Electric Boats] Re: Adding batteries in series to an existing bank... thoughts?

 

James's comments are very appropriate.  I'll expand on that a bit.

The risks of paralleling different age lead acid batteries are well documented.  The upper end of that risk is thermal runaway and exploding batteries. 

I have paralleled new golf cart batteries and used them for years without any indication of inter-battery issues.  But that was with moderate currents, less than .3C and shallow cycling generally less than 50%.

The issue with a string of mixed age batteries is the older ones limit the output and capacity of the string.  It is probably worth the effort to set up and use two banks.

John A

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Flatwater Electronics
www.flatwaterfarm.com
"Neurosurgery for computer looms."

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Posted by: John Acord <jcacord@gmail.com>

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