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#Post#: 58--------------------------------------------------
battery charging
By: jeffcrf450x Date: July 21, 2018, 8:26 pm
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Hey. Just got back from a 5 day camping trip which was all dry
camping. Our travel trailer has two large 6 volt batteries which
lasted us the whole trip. After driving home the batteries
showed very little gain from charging off the truck. So my
question is ouldint the batteries charge quite quickly off the
truck?? I checked and do have voltage output at the trailer
plug. The fuse going to the trailer charging harness from the
factory is a 40 amp so I figure there should be lots of current
there for charging. Does anyone one what amperage thier should
be at the plug while driving?
Thank you!! ::)
#Post#: 59--------------------------------------------------
Re: battery charging
By: Tiguy Date: July 24, 2018, 10:08 pm
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Had a similar problem, [ 2-6v deep cycle ] we only do
dry camping at a lake in the interior . fortunately, I had an
extra 12 volt battery that I use for my electric trolling motor,
upon returning home & plugging into shore power, I noticed that
my panel was not showing a full 12v, so started to check fuses,
found a 30 amp fuse was blown , replaced, now everything is as
it should be.
#Post#: 60--------------------------------------------------
Re: battery charging
By: jeffcrf450x Date: July 24, 2018, 11:17 pm
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Was the fuse on the truck side or in the trailer?
#Post#: 61--------------------------------------------------
Re: battery charging
By: Tiguy Date: July 25, 2018, 9:52 am
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It was in the trailer
#Post#: 62--------------------------------------------------
Re: battery charging
By: mikakuja Date: July 28, 2018, 10:59 am
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It doesn't sound like you have any issues, this is normal... The
7 pin harness on your vehicle will not supply more than a few
amps of charging current to the trailers batteries while
driving, which won't amount to much of a charge being put back
into the trailers batteries (especially after 5 days of use).
The wire size is too small and the wire run is far too long to
supply a decent current without overheating the wiring.
As a comparison..... My 6v's were at roughly 50% SOC yesterday
when we left Shuswap. With 200w of solar on the roof of the
trailer in full sun all day, and roughly 4 hrs driving time I
still wasn't fully charged when we arrived home, and I did not
expect it to be. I plugged the trailer into shore power at
around 8pm yesterday and as of 8:40am the batteries are reading
90% SOC (my controller only reads in 10% increments). They
probably won't read 100% until later today.
#Post#: 63--------------------------------------------------
Re: battery charging
By: jeffcrf450x Date: August 23, 2018, 10:46 pm
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Thx for the info!
#Post#: 92--------------------------------------------------
Re: battery charging
By: Harvey Date: February 20, 2019, 10:09 pm
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The problem with engine charging on our class C is voltage.
There were a couple of poor connectors and too long of a wire
from engine to house batteries causing a drop of more than a
volt. Lower voltage can�t push as much current into the
batteries.
A 100 watt solar panel solved all our charging problems. The
batteries never go below 80% charge.
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