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Old 10-18-2021, 01:02 AM   #1
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Join Date: May 2021
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6 volt battery decision

Decided to add 2 more 6 volt bats to my already 2. To make a total of 4. Need a recommend brand highest amps and where to buy. Also clarifying routing of cables. Goal is to make 1 large battery thx in advance.
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Old 10-18-2021, 07:27 AM   #2
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When adding to an existing bank I would buy 2 more of exactly eBay you already have and worry about maxing AH when you replace them all.
Above assumes your existing ones aren't too old. If they are then I would consider replacing w 4 new.

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Old 10-18-2021, 07:38 AM   #3
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All batteries connected together should be the same brand and type if possible. They should also be about the same age and condition.

If they are different, they will charge at different rates, and some will over/under charge.
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Old 10-18-2021, 08:01 AM   #4
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Don't mix chemistry ( AGM with Flooded or Lithium ) or new batteries with dead batteries, but brand and age, by a few years, if in good condition, will do no harm.

All brands of flooded battery's are 2.1 volts per cell.
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Old 10-18-2021, 08:24 AM   #5
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I presume that your existing 6V batteries are golf cart batteries, GC2 typically. Sams or Costco has them for about $100 each.

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