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Old 04-02-2013, 01:06 PM   #11
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Originally Posted by myredracer View Post
To answer dmf654, I would only connect directly to the RV battery terminals. If I had to, I would lift the RV battery out of the box to closer to the TV.

I vaguely seem to recall that if you discharge a battery too fast (like in jump starting) you can cause buckling of the internal plates and then you've damaged your battery. I am guessing that a quick jump to get the TV (gasoline) running should be fine?
In a pinch yeah I would guess it would do the job. To depend on it regularly not a good idea.

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Old 04-02-2013, 01:29 PM   #12
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Depending on how big of a hurry you are in, I would remove the battery from the truck and put it in place of the deep cycle battery in the TT. (Assuming you have shore power.)

If you don't have shore power, I would remove the battey from the TT and hook it up with the jumper cables to the truck. Then leave it for an hour to let it charge up the truck battery a bit.

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Old 04-02-2013, 01:45 PM   #13
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I was camping in the woods and diesel wouldn't start because batts were drained. Pulled camper battery (Interstate) and hooked it up to one of the truck battery connections and fired it up. Put battery back in camper tray and went home. Worked like a champ. So yea, it works.
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Old 04-22-2013, 03:01 PM   #14
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the battery boast switch in many RV's is essentially this. They bridge in parallel the house batteries to the chassis batteries to aid in starting the motor when the chassis batteries are drained.

it's not something you should do often or for long periods of time as deep cycle batteries weren't designed to give that many amps that quickly, but yes you can. the factory is already giving you that option in class a and c rv's for sure.
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Old 04-22-2013, 04:28 PM   #15
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I'm also surprised it would run the battery down. Most modern vehicles like my 2011 Chevy have battery run down protection for just such things. If a dome, reading or cargo lamp are on they will automatically be shut down to preserve the battery.

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