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Old 05-29-2018, 09:06 PM   #11
tomd
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The battery you have is probably 12 v, and adding a second 12 v battery will of course double your capacity.
An even better approach is to use golf cart batteries, you can get 2 6V deep cycle 6 volt batteries that will fit in same space. You must wire them in series. They are taller and heavier but fit in existing battery holder. They will provide more capacity due to extra lead/size and Ah capacity. Trojan T105 are good example. I use these for both RV and electric boat, golf cart stores will carry them and help you connect correctly.
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Old 05-30-2018, 04:12 AM   #12
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Battery cut off should be installed on the negative cable only.
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Old 05-30-2018, 04:21 AM   #13
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Quote:
Originally Posted by GM partsman View Post
Battery cut off should be installed on the negative cable only.


Factory installed cutoffs are always on the positive side.

This is a topic that can get just as heated as what’s the best truck.
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Old 05-30-2018, 04:22 AM   #14
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Thanks for all the info so far.

We did our first 3 night trip this past weekend with no electric. Battery held up fine. Ran the fridge and water heater off propane, so pretty much only the lights and radio were using the battery.
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Old 05-30-2018, 04:58 AM   #15
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I can see that if the switch is enclosed. I've seen too many tools fried by inexperienced techs. Military is 24 volts. Saw what happens when 24 volts is grounded against a ring.
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Old 05-30-2018, 05:04 AM   #16
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I can see that if the switch is enclosed. I've seen too many tools fried by inexperienced techs. Military is 24 volts. Saw what happens when 24 volts is grounded against a ring.

24V is double what an RV is. Even exterior mounted are on the positive side.
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