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Wiring, Electrical & Installation
Dual battery wiring tutorial (and why)
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<blockquote data-quote="smoka" data-source="post: 5838707" data-attributes="member: 606721"><p>I would disagree about the 1/0 wire size minimum. But most people don't need a second batt unless they are pushing alot of power which makes smaller wires pointless. But there is no reason you can't use a smaller wire as long as you fuse it correctly.</p><p></p><p>'Hundreds of amps' transferring between batts would probably kill one or both batts is my guess. I've never connected a dead batt and a full batt so I can't be positive on what happens. But most people charge their batts using less than 20 amps, so I imagine that any charging at over 40-50+ amps would be damaging the batt/shortening its life.</p></blockquote><p></p>
[QUOTE="smoka, post: 5838707, member: 606721"] I would disagree about the 1/0 wire size minimum. But most people don't need a second batt unless they are pushing alot of power which makes smaller wires pointless. But there is no reason you can't use a smaller wire as long as you fuse it correctly. 'Hundreds of amps' transferring between batts would probably kill one or both batts is my guess. I've never connected a dead batt and a full batt so I can't be positive on what happens. But most people charge their batts using less than 20 amps, so I imagine that any charging at over 40-50+ amps would be damaging the batt/shortening its life. [/QUOTE]
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Dual battery wiring tutorial (and why)
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