Fifth Wheel battery issue

Thanks to everyone for the good advice, Dave

My rig's battery box is still pristine. Painted with cheap black paint. So... what could I paint it with to make it more acid-resistant?

Also, anyone use those pads you can buy that are meant to sit under the batteries and neutralize the acid?

example

Amazon

edit: after reading the reviews on Amazon, and considering how cheap they are, I ordered a couple.

Just do a better job of cleaning the old mess. The new batts w/ the wizard converter,....it will be fine.

In some cases, if the new batts were filled too full, they could overflow while charging,..... make a mess all over again. In that case, fully charge the batts,.....maybe outside the RV, then suck the electrolyte down to a touch below the rings

Pull your batteries scrape the loose rust blow them off and use some rust converter on the compartment and repaint with a rust resistant paint.

13.2 volts doesn't sound right. I would think more like 13.7.

Well, I looked closer at the batteries and I was mistaken about it leaking, it was just battery terminal stuff I sprayed on it, but the corrosion is evident, not on the batteries but in the compartment. The batteries without disconnecting from each other are reading 13v , with the battery switch off and 13.2 with it on. The converter is a intelipower 9200 series from progressive dynamics. Thanks again for your help, Dave

What is the battery voltage?

donn0128 wrote:
Converter. You probably have a cheap two stage converter. Likely cure, replace with one of the newer three stage converters.

Naw. A two stage converter shouldn't cause that type of an issue unless it has its own problems. Many older units used that type of converter without issues. I would look under a different rock. BTW what is the measured voltage at the battery with the converter connected?

Converter. You probably have a cheap two stage converter. Likely cure, replace with one of the newer three stage converters.