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Old 12-30-2014, 09:58 PM   #11
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I use wing nuts on the terminals so I can connect and disconnect easily. While the TT is in storage, the battery is at home sitting in the garage on a float charger. That way it's ALWAYS got a full charge and I don't have to worry about it growing legs.
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Old 12-31-2014, 03:23 AM   #12
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Homer our Beagle is a better tinkerer than I, so I asked my dealer to install a battery disconnect switch. It was way cheaper than replacing a battery and works like a charm . . . with the one downside being that we need to remember to use it.

When we unhitch, we throw the switch and that protects the battery.

As for charging from a TV, we have been boondocking in 35 -40 degree nights and have plenty of power for running the furnace fan; lights; and more for several nights. If we become concerned over battery levels, we can easily recharge from TV in a short amount of time.

We are pleasantly surprised to see how well everything works but the battery disconnect has saved our batteries as it easy to leave something on in the TT.
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Old 12-31-2014, 07:46 AM   #13
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Quote:
Originally Posted by giddyup View Post
Homer our Beagle is a better tinkerer than I, so I asked my dealer to install a battery disconnect switch. It was way cheaper than replacing a battery and works like a charm . . . with the one downside being that we need to remember to use it.

When we unhitch, we throw the switch and that protects the battery.

As for charging from a TV, we have been boondocking in 35 -40 degree nights and have plenty of power for running the furnace fan; lights; and more for several nights. If we become concerned over battery levels, we can easily recharge from TV in a short amount of time.

We are pleasantly surprised to see how well everything works but the battery disconnect has saved our batteries as it easy to leave something on in the TT.
I don't understand something. I've been told that the TRAILER battery does NOT get charged from the TV system. Can you explain?
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Old 12-31-2014, 08:04 AM   #14
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Easy to determine. Put a volt meter on the TT battery and notice voltage. Start tow vehicle and again take notice of the TT battery voltage. See if it increases. Only way to know for sure.
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Old 12-31-2014, 09:15 AM   #15
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I experienced a dead batt while in storage right after we got our first TT. A little research (this forum) strongly suggested parasitic drain as others have suggested. Pulling the 30A fuse solved that. Then a few (25) batteries grew legs at the storage facility and I switched to wing nuts like Camper did. I bought a second battery box which sat just inside the doorway to hold the battery while idle. I would leave it a couple of months without problems. My TV does charge the TT battery.
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Old 12-31-2014, 09:25 AM   #16
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Mine does too but I would not depend on it to restore a sead battery in my rig.
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Old 12-31-2014, 09:31 AM   #17
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Docmarrin, a volt meter will confirm if your TV will charge your battery while driving and or parked. Some vehicles you need to switch the location of the fuse for the auxiliary power. Most of the time this fuse is under the hood in that fuse box.

The vehicle should be able to charge the battery while driving, but all you get is a slow trickle charge. I found on a really discharged battery two hours of driving will not recharge the battery sufficiently.

Best thing to do is add a battery disconnect switch or to pull you 30 amp fuse at the battery.

I have not tested this, but have been told the parasite voltage load will drain the battery dead in two weeks.
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Old 12-31-2014, 09:35 AM   #18
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Mine does too but I would not depend on it to restore a dead battery in my rig.
Yes! 110%.
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Old 12-31-2014, 11:36 AM   #19
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Our 2015 x20e most definitely charges from the TV. We try to keep the batteries above the 50% mark (not always successful) so I don't know if the TV can rescue a battery that is "flat". Our two 6 volt deep cycle batteries re-charge that top 50% or so in about an hour on the TV.

Maybe the connections have changed on different years of the same model? This might explain why some can and others can't charge from TV.
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Old 12-31-2014, 04:14 PM   #20
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Just to clarify and distill some info:

-Parasitic drain will kill a deep cycle battery on a stored RV in 2-3 weeks (at the longest).
-Prevent that dead battery by removing the inline 30A fuse, installing a battery disconnect switch or removing your battery.
-Your tow vehicle will charge your battery, but it cannot resurrect a completely dead battery.
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