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Old 04-23-2012, 02:04 PM   #11
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Quote:
Originally Posted by loryray View Post
I have this problem of draw down w/nothing on. batts only last about a day.Class a 373ds. Run gen for a couple of hrs. Shows a charge on my meter. and onl get a 2/3 full charge shown on control panel. Same w/engine alt. Dealer says a .02 amp draw while sitting is normal????? does any one know for sure what the problem could be. Have un plugged every 12v fuse one at a time and foun nothing irregular.
Your problem could be a number of items so I listed some common ones:

-Parasitic draws like the ones turbo listed.
-Too little battery for your RV and usage- e.g., a small group 24 12volt doesn't offer a lot of Ah.
-Bad battery. How old is you battery and is it well-maintained?
-Inaccurate Sensors (the idiot lights in most trailers are not too accurate). Use a voltmeter.
-Generator. Charging for two hours might not do a lot for you. This depends on the amps from the charger, the size of your battery and how low it is when you start the generator.
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Old 04-24-2012, 12:00 AM   #12
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Keep in mind batteries are a dealer, not a factory, install. My 2010 came with two new batteries and I replaced them last year. I put in top of the line Interstate marine 360's. They stay charged and I run the gen an hour or more a month.

Poor batteries can really spoil an otherwise good trip.
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Old 04-24-2012, 07:14 AM   #13
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Quote:
Originally Posted by loryray View Post
I have this problem of draw down w/nothing on. batts only last about a day.Class a 373ds. Run gen for a couple of hrs. Shows a charge on my meter. and onl get a 2/3 full charge shown on control panel. Same w/engine alt. Dealer says a .02 amp draw while sitting is normal????? does any one know for sure what the problem could be. Have un plugged every 12v fuse one at a time and foun nothing irregular.
.02 amp is nothing to worry about.
I bet you have more than that.
Get a decent meter.
Put it on amps scale.
It needs to be 2 amps or more-- not milli amps scale!
Turn off everything in your RV.
Pull out a fuse and place the meter leads across the fuse holder.
The meter will read the amps or fractions of amps in that circuit.
Take note of what the meter says and what the fuse is for.
Check each fuse one at a time. Write down what you find.
This will tell the tale-- assuming all the fuses are located in the fuse box.
Some things are taken right off the batteries with inline fuses and don't
go thru the fuse box.
Those have to be found and tested also.
Do NOT put the meter in a fuse holder and turn on something like
your power awning or power steps. It will blow the meter internal fuse
and possibly smoke the meter.
This test is for parasitic loads and that means motors and such are OFF
during the test.

Once you have done this you will know what's siphoning the power out
of your batteries.
As mentioned below it could be a bad battery.
Also as mentioned the little LED battery charge indicators that come with
RVs are notoriously inaccurate.
Measure battery charge with a meter.
12v on a battery with not much of anything turned on means the battery
is approx half dead.
12.6v means it's nearly full.
Notice that the difference is only a few tenths of a volt.
That's why you need a decent digital meter to tell what's going on.

IF you check all fuses and the total current found is less than 1 amp total-
go to the battery and disconnect the battery lead.
Put the meter across the battery post and the lead you removed.
Read that for total amps WITH EVERYTHING OFF.
If you find a much higher reading at the battery than all the others put together
it means there is something somewhere that's hooked into the battery circuit
that you haven't found yet.

Good luck!
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