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Old 07-08-2019, 06:30 AM   #41
UB1
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Trojan makes 12v 130 amp hr batteries but they msrp @ $245 each.I got my Trojan T105 6v batteries for $130 each and Costco and Sams club are surely cheaper than that.
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Old 07-08-2019, 10:17 AM   #42
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Sam's Club price for Duracell GC2 (215-20amp/hr) is $89.88
https://www.samsclub.com/p/duracell-...lp_product_1_1

COSTCO price for Interstate GC2 (210-20amp/hr) is $98.99
https://www.costco.com/Interstate-6-...100476406.html

Both carry a 12 month "free replacement" warranty.

Core Charge is $15 per battery in Michigan, but changes based on the state of purchase.
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Old 07-08-2019, 01:10 PM   #43
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Two 12 volt batteries have twice as many holes to watch for low electrolyte as two 6 volt batteries. That makes twice as much work.

One cautionary note: Unless the batteries are exactly matched one may charge slightly different, not a problem with parallel connection, but can be with series connection if not "Equalized" and may cause problems over time. RV converters don't normally have an "Equalize" stage. I pull mine every winter and charge them individually with a 6 volt charger to avoid any problem.
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Old 07-08-2019, 04:52 PM   #44
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Quote:
Originally Posted by Mainer View Post
Two 12 volt batteries have twice as many holes to watch for low electrolyte as two 6 volt batteries. That makes twice as much work.

One cautionary note: Unless the batteries are exactly matched one may charge slightly different, not a problem with parallel connection, but can be with series connection if not "Equalized" and may cause problems over time. RV converters don't normally have an "Equalize" stage. I pull mine every winter and charge them individually with a 6 volt charger to avoid any problem.
Thanks. Good advise. I should invest in a 6V charger.
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Old 07-08-2019, 05:37 PM   #45
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Maybe a stupid question, but can you use a 12v charger to charge two 6v batteries?
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Old 07-08-2019, 06:02 PM   #46
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Maybe a stupid question, but can you use a 12v charger to charge two 6v batteries?

Yes. When the batteries are wired in series, they present as a single, high-capacity 12v battery.
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