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Jeep Wrangler JK
JK General Discussion
Dual Battery Questions
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<blockquote data-quote="Dirty Dog" data-source="post: 456356" data-attributes="member: 24042"><p>No. You need more like 300 amps continuous, and it should handle 10 minute spikes of around 2500 amps. That's why dual battery systems don't cost $10.</p><p></p><p>As for voltage, that is exactly where serial and parallel wiring comes into play.</p><p></p><p>Assume you have two batteries rated at 12V/10Amps. </p><p></p><p>To connect them in series, you wire the positive terminal of one to the negative terminal of the other. This will deliver 24V/10Amps.</p><p></p><p>To connect them in parallel, you wire positive to positive and negative to negative. This will deliver 12V/20Amps.</p><p></p><p>If you wire a dual battery system in your Jeep in series, you will get to do a LOT of other wiring...</p><p></p><p>On the other hand, wiring them in series is occasionally useful. With your battery, your buddies battery, and two sets of jumper cables you can make the worlds cheapest stick welder. Your choice of rod is limited, but you can toss the cables and rods in your Jeep and it'll work for trail repairs. I've done trail repairs this way. It's not pretty (I'm a crappy welder) but it's better than walking out.</p></blockquote><p></p>
[QUOTE="Dirty Dog, post: 456356, member: 24042"] No. You need more like 300 amps continuous, and it should handle 10 minute spikes of around 2500 amps. That's why dual battery systems don't cost $10. As for voltage, that is exactly where serial and parallel wiring comes into play. Assume you have two batteries rated at 12V/10Amps. To connect them in series, you wire the positive terminal of one to the negative terminal of the other. This will deliver 24V/10Amps. To connect them in parallel, you wire positive to positive and negative to negative. This will deliver 12V/20Amps. If you wire a dual battery system in your Jeep in series, you will get to do a LOT of other wiring... On the other hand, wiring them in series is occasionally useful. With your battery, your buddies battery, and two sets of jumper cables you can make the worlds cheapest stick welder. Your choice of rod is limited, but you can toss the cables and rods in your Jeep and it'll work for trail repairs. I've done trail repairs this way. It's not pretty (I'm a crappy welder) but it's better than walking out. [/QUOTE]
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Jeep Wrangler JK
JK General Discussion
Dual Battery Questions
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