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Old 07-27-2020, 12:02 PM   #11
JohnnieB's Avatar
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
Default Re: Battery info

Originally Posted by Captain Claptrap View Post
What if you did 2 banks of 3 12's so essentially you have them in parallel. Would that make it a wash and restore the trip capacity of the original 6 in series? Any drawbacks to such a config?
Typically, a 12V cart battery stores 150AH, so a 3S2P pack would be 36V-300AH, or 10.8kWh of storage.
The standard 6V battery used in a 36V pack is 225AH, or 8.1kWh.

Mathematically, that is about 1/3 more storage capacity, which indicates the range and lifespan is roughly 33% longer than 6x6V-225AH pack.

The numbers indicate the 3S2P 12V configuration would more than restore the trip capacity of the original 6x6V pack, but it would weigh about 120 pounds more, so the cart will perform like there is always an extra passenger onboard.

The existing 36V charger will probably work okay.

Keeping them all in balance might be an issue. I'd charge each individually with a 12V charger and pick those with the closest at-rest to make the parallel pair.

IIRC, someone did this a few years ago, but I don't remember who, or if it worked out okay.
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