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Old 01-19-2016, 01:19 PM   #1
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Model: 25.2 Axis
State: Arizona
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THOR #3471
Truck battery

When you are plugged in at an TV site, does this keep your truck battery charged or do you need a charger?
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Old 01-19-2016, 01:31 PM   #2
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Originally Posted by Hugh.vines@att.net View Post
When you are plugged in at an TV site, does this keep your truck battery charged or do you need a charger?
The isolator prevents the chassis battery from being charged by shore power. So, if that was the intent of your question the answer is no.
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Old 01-19-2016, 01:47 PM   #3
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What do you do if you are at one site for 2 weeks just keep cranking the engine
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Old 01-19-2016, 02:10 PM   #4
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Brand: Thor Motor Coach
Model: ACE 29.3
State: Florida
Posts: 21
THOR #3374
If your coach is equipped with device called B.I.R.D. made by intellitec it will charge your chassis battery while plugged into shore power. My thor motor coach came with this device already installed in it.

If your coach does not have the "BIRD" device, you can install a device called "amp-L-start" . This device will also charge your chassis battery while plugged into shore power.

AMP-L-START Starting Battery Charger/Maintainer - Overview Page
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Old 01-19-2016, 02:11 PM   #5
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Model: Hurricane 32A
State: Florida
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If measuring your trips in 'weeks' - I wouldn't expect any issue with the chassis (truck) battery - assuming a good battery and no load.

If your unit has a chassis disconnect (as my 2000 Infinity did) - I also used the disconnect when parked to insure no load.
My 2014 Hurricane no longer comes with that switch..

dstankov - I've never seen an answer beyond 'it depends on model' as to whether the chassis battery is charged by coach.. I tend to suspect mine is - as I inadvertently used a 12v chassis socket for quite some time on our first trip - and when I discovered it was chassis powered - checked the battery voltage - and all were fine.
My searching never found a definitive answer.

I carry a charger with me - but only used it when an electrical problem prevented proper charging of the chassis battery when DRIVING (on the 2000.) A whole different issue as I limped home from that trip...
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Old 01-20-2016, 04:30 PM   #6
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Model: 376
State: New Jersey
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Originally Posted by Hugh.vines@att.net View Post
What do you do if you are at one site for 2 weeks just keep cranking the engine
2 weeks should not be a problem battery should not run down If yours is draining you have some sort of parasitic draw you need to find
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