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Originally Posted by toolman
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My four new Batteries are Trojan 30XHS 12V C-16 130AH at 20Hrs or 105AH at 5Hr.
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That's impressive specifications for a 66-pound battery. Their specific energy density looks very good for a 12-Volt battery.
Most "experts" (which definitely doesn't include me) normally don't recommend having 4 batteries wired in parallel. If you tied them all together you'd have 6, and they would be of different sizes, brands, and age. Experts would certainly not recommend that.
These batteries seem ideal for a light golf cart or other 48-VDC device where the batteries would be connected in series. That's not to say they can't be connected in parallel in a 12-VDC system, although you'd want to keep cables of equal length to insure batteries charge and discharge as evenly as possible.
I'm curious how or why you selected these new batteries?