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Old 08-31-2018, 08:15 PM   #1
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Default Roadtrek Simplicity - dead house battery

Today I tried to turn on the battery and nothing... I drove the RV as it has the underhood thing.. still nothing. I connected to shore power .. still noting so now what? I believe it is a 100W AGM battery unt=der the chassy. Please help as I wanted to take the RV from Santa Barbara to Fort Bliss to see my son.
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Old 08-31-2018, 08:22 PM   #2
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Today I tried to turn on the battery and nothing... I drove the RV as it has the underhood thing.. still nothing. I connected to shore power .. still noting so now what? I believe it is a 100W AGM battery unt=der the chassy. Please help as I wanted to take the RV from Santa Barbara to Fort Bliss to see my son.

Is this a lithium battery unit with the single AGM battery?


If so, and the AGM is dead, there will be no voltage seen by the UHG or the shore power, so they won't initiate charging.


You can hook up another battery parallel to the AGM to get charging started, use an old school fixed voltage battery charger, or even jump the coach battery from the vehicle or another vehicle. Once there is voltage on the battery from a source, the UHG and shore power should both start charging. Probably easiest to use the shore charger first to get some charge in the AGM once you get it initiallized, and once you have some charge run the engine or go for a drive to make sure the UHG also starts up to finish the charging.
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Old 08-31-2018, 08:34 PM   #3
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Thank you, will try the classical charge teh battery by itself and will see where we go from there. (AGM battery buy the way)

Hope that by the time I need it today I can least charge it enough so shore power can compete for some chare before the long drive to Texas...
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Old 08-31-2018, 10:01 PM   #4
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If I connect a battery charger to the poles of the battery which are not used , it should still work , correct ?
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Old 09-01-2018, 01:05 AM   #5
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If I connect a battery charger to the poles of the battery which are not used , it should still work , correct ?

I assume you are talking about the threaded studs on the battery post where the cables connect? If so, yes, they are just like going to the battery post.
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Old 09-01-2018, 12:26 PM   #6
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Good luck. You would be well served by replacing the battery. 'till then, check the temperature doesn't get high while charging. any time it is charging.
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Old 09-01-2018, 05:14 PM   #7
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Default What year is your vehicle?

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Originally Posted by Whynot View Post
Today I tried to turn on the battery and nothing... I drove the RV as it has the underhood thing.. still nothing. I connected to shore power .. still noting so now what? I believe it is a 100W AGM battery unt=der the chassy. Please help as I wanted to take the RV from Santa Barbara to Fort Bliss to see my son.
Did you purchase it new?? Year?? Warranty?
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Old 09-30-2018, 07:04 PM   #8
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All worked out well. I connected a battery charger to the battery directly, after an hour or so I was able to turn on the battery connect switch, than connect to shore power . Trip was successful.
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Old 04-25-2019, 05:27 PM   #9
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Default Portabel Solar Charger

I have a portable (suitcase) solar panel with its own charge controller etc.

Can I connect this directly to the battery to charge the battery directly?

If the battery switch is on and lightly draw some power should this still be OK?

Since the setup has its own charge controller I believe this should be OK but I do not pretend to be an expert so hopefully some expert will chime in.
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