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Author Topic: House batteries in motorhome will not charge.  (Read 8860 times)

SAK557

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House batteries in motorhome will not charge.
« on: November 12, 2012, 09:00:33 PM »
House batteries do not charge when plugged into shore power, running the generator or running the engine. How do I determine the cause and fix.
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DAN L

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Re: House batteries in motorhome will not charge.
« Reply #1 on: November 12, 2012, 10:21:09 PM »
 :)welcome to the forum.
it would help if we knew more about your rv.
you can add that info in the signature area of your profile.
01 Winnebago 35U W20. member Good Sam, SKP. all fluids AMSOIL Syn. BANKS ecm prog. SCAN G. II w/Alli temp. 4 KONI fsd shocks. 2 LIFELINE gpl-6ct Batts on their sides. TST t.p. and temp mon. K&N panel air filter. PROG IND inline surge prot. silv star lights. STEHL dolly. dw CHERYL, 2 cat furkids.

John Canfield

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Re: House batteries in motorhome will not charge.
« Reply #2 on: November 13, 2012, 08:35:37 AM »
Yes, welcome aboard!

I've never heard of a situation where the engine alternator AND the house charger don't charge the batteries.  What does your dash alternator gauge say the alternator is doing?  Should be around 14V.  How did you determine that the batteries aren't being charged?
--John
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Clay L

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Re: House batteries in motorhome will not charge.
« Reply #3 on: November 13, 2012, 09:58:34 AM »
Two failures would have to happen - AUX solenoid and the converter - or  just the battery disconnect switch could have been activated.

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Gary RV_Wizard

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Re: House batteries in motorhome will not charge.
« Reply #4 on: November 13, 2012, 10:04:13 AM »
Or there may be a main battery fuse (or fusible link) that is blown. Or a badly corroded connection to the house batteries, or the battery-chassis ground. Any of those conditions would prevent charging from any source.
Gary
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SargeW

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Re: House batteries in motorhome will not charge.
« Reply #5 on: November 13, 2012, 11:07:23 PM »
Or they are just too dead to take a charge......
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SAK557

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Re: House batteries in motorhome will not charge.
« Reply #6 on: November 14, 2012, 11:35:56 AM »
One house battery was replaced. When plugged into shore power the batteries still do not charge. but if I start the engine the house batteries charge according to the One Place readout. When I shut the engine off the One Place readout displays less then a full charge and the converter/inverter does not start to fully charge the house batteries.
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Jammer

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Re: House batteries in motorhome will not charge.
« Reply #7 on: November 14, 2012, 11:40:32 AM »
It's difficult to troubleshoot electrical problems over the internet because a qualified person who is physically present will notice things going on that may not be obvious to others.

If you've replaced at least one of the batteries, chances are that the inverter/charger, the wiring, or the battery disconnect are to blame for any remaining problems.  Checking voltages at each of these points with the charger operating should identify the problem.  Some inverter/chargers have a variety of different modes and have to be turned on manually in addition to being connected to shore power in order to charge.
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bbbeebop

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Re: House batteries in motorhome will not charge.
« Reply #8 on: November 14, 2012, 01:03:51 PM »
Have you checked the battery disconnect switch?  If it's off then the coach batteries will not charge when plugged into shore power.  You say you changed one house battery, if there is more then on they all should be the same so as not to cause a bad one from killing the good one etc:
Good Luck!
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John Canfield

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Re: House batteries in motorhome will not charge.
« Reply #9 on: November 14, 2012, 06:08:48 PM »
One house battery was replaced.

Batteries in parallel, like yours (and mine) should ALWAYS be replaced in complete sets with the exact kind/brand/capacity.  Never, ever only replace one of a parallel battery set.
--John
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Conquest aka Robert

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Re: House batteries in motorhome will not charge.
« Reply #10 on: December 07, 2012, 10:46:57 AM »
I would look for a wire that got missed in the switching of the battery.  ;D

 Check the water levels also to low and they won't charge.

Then get a voltmeter out and start checking power flow. ;)

 Even possibly taking the batteries out and charge them seperately on a charger.

Consider taking them to a store and get them load tested to make sure they are good batteries.

 
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John Canfield

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Re: House batteries in motorhome will not charge.
« Reply #11 on: December 10, 2012, 05:05:54 PM »
Okay, one more time.  Let's move on or I'm going to lock the thread.
--John
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SCVJeff

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Re: House batteries in motorhome will not charge.
« Reply #12 on: December 11, 2012, 07:56:40 PM »
I knew I shouldn't have taken the bait..
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Ernie n Tara

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Re: House batteries in motorhome will not charge.
« Reply #13 on: December 12, 2012, 12:21:06 PM »
Johh,
How about break the silly discussion off to a seperate thread and see if we can't help the OP with his problem. Too many people are likely to be influenced by the innaccurare information.
Ernie
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John Canfield

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Re: House batteries in motorhome will not charge.
« Reply #14 on: December 12, 2012, 12:22:02 PM »
I was thinking along the very same lines Ernie.
--John
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John Canfield

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Re: House batteries in motorhome will not charge.
« Reply #15 on: December 12, 2012, 01:19:56 PM »
Okay - the mixing batteries tangent has now moved on to a better board  :D.
--John
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JaKM

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Re: House batteries in motorhome will not charge.
« Reply #16 on: December 26, 2012, 07:28:21 PM »
Just had a similar problem on my '03 Brave. Batteries wouldn't take a full charge, charging systems (alternator and converter) were putting out good voltages. Replaced the batteries which seemed to work for a while but,after a couple weeks it was back to the same deal. They'd only show about 2/3 charge on my levels panel. I jacked them up a couple times using a 12amp battery charger but that wasn't fixing anything. Then one day I lost all my 12v system. To make an already long story short, I found a loose ground on the back of my 12v fuse panel. Now my batteries show a full charge all the time and my lights have never been brighter. :)
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