OOPS! Dry house batteries

Buy a good desulfator and let it work on them for a few months. I'm a believer in desulfators and have used them for 10 or more years.

I did the same in my learning years. Filled and 2 days later 1 was leaking, big split along side of the battery. Replaced all 4 batteries. Now I check once a month faithfully.

If they truly were dry then I would say they are destroyed.

pianotuna wrote:
X2

2oldman wrote:
This is a good excuse to get AGMs. No water worries, no problems at all... with the possible exception of overcharging. I'd be looking at your converter to see if it's overcharging.

X3

I went to AGM for this very reason

We have used jumper cables from the truck start battery here to aid the batteries to run the SLIDES in my pulled trailer setup... I just nose the truck up to the battery bank location and hook-in my jumper cables... Just be sure to get the cables polarity correct... With your Motorhome setup I think you already has a built-in relay contactor to do the same thing...

You most definitely have driven a few nails in the batteries letting them run dry on fluids.... When this happened to my 12VDC batteries connected in parallel I right away ended up with a shorted cell in one of the batteries trying to recover from it. One battery would not charge higher than 5VDC or so and got very hot... Game over for that particular battery...

After catching this I became very aware to the maintenance of the batteries and watched them very close on a weekly basis.

I have lucked out and got a few more years out of the remaining three batteries and just now are planning for their replacement. These were all installed in 2009...

Roy Ken

X2

2oldman wrote:
This is a good excuse to get AGMs. No water worries, no problems at all... with the possible exception of overcharging. I'd be looking at your converter to see if it's overcharging.

This is a good excuse to get AGMs. No water worries, no problems at all... with the possible exception of overcharging. I'd be looking at your converter to see if it's overcharging.

Its a gamble as to how long they have been out of water......you will know soon enough if they don't charge....watch that they dont get too hot trying to charge....

Maybe or maybe not, if your lucky you'll get another season. Just be ready to replace at any moment.
You 12 items should run when hooked to sure power as long as the converter can handle the load while trying to charge the batteries.