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post #1 of 20 (permalink) Old 24-07-2021, 17:06 Thread Starter
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Autotrail Leisure Battery stopped Charging

Hi,

Im new to motorhoming and not 100% sure how all the electrical stuff works fully, but were on our 4th trip and for first time the leisure battery capacity has dropped from 100% and currently on 23% the control panel says its operating at 13.7v

Were on electric hookup as we have been at previous sites over last few weekends but this is the first time the battery capacity has dropped.

I noticed on the control panel I can switch to vehicle battery and when I do this the capacity indicator disappears, not sure why.

I assume we should have leisure battery selected farther than vehicle battery?

We have an Autotrail Dakota 2012 running an EC500 power control system

Any ideas if Im doing something wrong?

Thanks
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post #2 of 20 (permalink) Old 24-07-2021, 17:28
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I have an Autotrail Navajo and I have the same problem with the AH dropping, but the batteries show full.
I contacted Sargent and was told it can be reset to 100% which I have done a few times, he also said as long as the batteries show full not to worry about it, so I dont
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post #3 of 20 (permalink) Old 24-07-2021, 17:29 Thread Starter
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Added some pics
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post #4 of 20 (permalink) Old 24-07-2021, 17:39 Thread Starter
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Quote:
Originally Posted by JanHank View Post
I have an Autotrail Navajo and I have the same problem with the AH dropping, but the batteries show full.
I contacted Sargent and was told it can be reset to 100% which I have done a few times, he also said as long as the batteries show full not to worry about it, so I dont
Thankyou so much for that and such a fast reply, were out on a site now and was starting to get little worried we were about to have problems but as the volts are showing 13.7v sounds like its all ok.

Thanks for sending that document over it all makes sense now 👍

Thanks again
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post #5 of 20 (permalink) Old 24-07-2021, 17:48
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Ill go to bed happy tonight knowing I could help someone.

Just to show you how daft that thing is, about an hour ago I checked because someone else had an Autotrail problem and the AH Said 82%. Now where is the AH thingy?
I dont think my solar panel reading is correct either, its in the Full sun.
A lot of people have problems with the Sargent.
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Last edited by JanHank; 24-07-2021 at 17:50.
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post #6 of 20 (permalink) Old 24-07-2021, 17:49
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If you are seeing 13.7, and the reading is correct, you are charging the batteries at the moment. It is normal for the capacity to be below 100% while the batteries are charging. Once they reach 100% the charging will taper off.

When your batteries are not on charge, or a while after they come off charge, say an hour later when the voltage has settled, you shoud see only 12.6 or 12.7 volts. Anything more than that and either your gauge is wrong or the batteries are getting a charge from somewhere.

Do you have a solar panel?

There is a battery charge graphic which I will try and find to post for you.

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post #7 of 20 (permalink) Old 24-07-2021, 17:54
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So what does it mean when the gauge disappears Alan?

If the batteries are full does the solar panel go into slow motion, I am not charging from the mains.

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post #8 of 20 (permalink) Old 24-07-2021, 22:06
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Originally Posted by JanHank View Post
So what does it mean when the gauge disappears Alan?

If the batteries are full does the solar panel go into slow motion, I am not charging from the mains.
Sorry Jan I don't understand your first question.

When the batteries are full the solar charge controller should cut the current to them only allowing a small amount of power wben.necessary to keep them topped up. If that did not happen the batteries would overcharge, overhead and be damaged.

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post #9 of 20 (permalink) Old 24-07-2021, 23:02
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Quote:
Originally Posted by erneboy View Post
Sorry Jan I don't understand your first question.

When the batteries are full the solar charge controller should cut the current to them only allowing a small amount of power wben.necessary to keep them topped up. If that did not happen the batteries would overcharge, overhead and be damaged.
We have two different pictures, The first is Steves, he is on the Leisure battery
The second mine and mine is on the vehicle battery with no AH sign.
I have just been in the van and turned it to the Leisure battery and the AH gauge shows. Dont I need to know the AH on a vehicle battery?
Maybe if Steve turns it to the vehicle battery the AH will go up after a while. Its time Autotrail used something different to Sargent becaue they are a pain in the bum.

Going by the solar cuts out when the battery is full Steves batterie is definitely full as he has no solar input.
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post #10 of 20 (permalink) Old 25-07-2021, 07:49
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The idea may be that since you don't use the vehicle battery to run appliances knowing how many Ah it could deliver is not particularly important.

What's important in a vehicle battery is cold cranking amps which is a measure of how much power that engine can deliver to turn the engine over.

The theory is that they are different types of battery performing different functions. One delivering fairly small amounts of current over longish times and the other giving short bursts where a lot of power iss required.

Often though both batteries are the same. There is a school of thought that says that leisure batteries are not worth bothering with. I tend to agree with that.
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