Battery Question??

So I posted this yesterday.... I came home from vacation (Camper stayed home) I noticed white residue on the ground under the battery box and around the positive terminal on the battery. I also noyiced that on the top of the battery it was wet, not like overflowing but just wet around both covers and water levels were good.

I un-hooked the battery and cleaned it all up, checked the battery with meter and got like 13.4 then checked the camper ground and positive that goes to camper and got a little over 13.

my converter is a WFCO 75 amp 3 stage output by Cheng.

I haven't had any issues other than the battery wet on top??

Thanks for any input....

I’m gonna find out what converter I have but just checked the battery and it’s reading 13.12 and the battery cables coming from the charging system are reading 13.4. I seem to notice this more when it’s very hot??

WFCO converters are almost universally installed in trailers, and almost universally problematic. They can fail in many ways but my most frequent experience on 3 trailers in the family is that they don't go into a period high voltage to equalize the cells. My last one ruined some expensive T105 batteries causing them to boil out eating away a bunch of metal in the front of the fifth wheel. The weirdest one was noisy voltage being put out by the WFCO that caused a Norcold fridge in my son's trailer to malfunction. Replace the WFCO--fixed the fridge--nothing done to the fridge. Do to that experience I wouldn't run a WFCO converter without a battery attached. Suggest replacement with a Progressive Dynamics or BoonDocker converter and a new battery.

Panic isn’t pretty! You need an hour...reading the basics of RV batteries.

For instance, what would having your slides out have to do with your batteries?

Naturist, it’s a deep cycle battery purchased from Advance Auto about 2 years ago. I’m gonna call keystone tomorrow with the vin and get the coverter make and model.

Put a disconnect switch on you battery. Have it off when not using the RV.

Where would I find the converter on a 2015 Keystone Montana Moutaineer?

leaving the fridge on, if an absorption model is fairly pricey.

What make and model of converter is in the RV?

great info ,

Uh-Oh. Maybe.

Check the water levels in the battery. It is possible it boiled over, and if the levels are down, you may indeed need a new battery. As well, maybe, a new converter. If this has happened, be sure to rinse all those white deposits thoroughly to prevent corrosion.

It is possible for a bad converter to overcharge a battery, in the process heating it up until the acid boils. This, needless to say, kills the battery.

If you have a volt meter, slap it across the terminals while the converter is on to find out what voltage it is applying to the battery. Converters are supposed to apply about 14.5 volts when the battery is in need of recharging, and taper that off to a little over 13 volts to maintain a fully charge battery.

Disconnect the negative (ground) wire from the battery, and measure the voltage again across just the battery. It should be 12.7 or so if the battery is fully charged.

Under normal circumstances, you should be able to disconnect the ground wire from the battery to isolate it from the converter when you leave the rig plugged in while storing it. If you do, you should reconnect it for a few hours once a month to keep the battery in tip top shape. Whatever you do, you need to make sure that the battery acid levels are kept topped up using distilled water.

Could also be corrosion on the battery terminal(s). At any auto parts store you can buy for a couple bucks treated felt pads that prevent corrosion. They come as a red-green pair, with one color for the positive and the other the negative terminals. I'd recommend them.