Boiling Battery Water

I just ordered a PD 4655 charger. It's supposed to be the latest model and a direct replacement.
We'll see when it gets here next week.

A 13.6 DC voltage in of itself does not boil batteries dry otherwise my Iota IQ4 converter which floats at the aforementioned rate would have killed several pairs of batteries over it's 9 years of use in my current rig which is plugged in 24/7. No mention of battery age or type but it may have developed a bad cell which can put quite a strain on a converter. In either case this would be a good time to upgrade your WFCO to a multi-phase smart charging converter.

RoyB wrote:
This always started my batteries to boil out fluids. Of course once that starts the battery life is shortened big time.

Of course that is NOT true.

"Gassing" which is really what is happening not "boiling", is a natural side effect of battery charging. Even charging at the proper voltages it happens a little bit.

The rest of your post is good though.
If the present converter can't be tweeked (adjusted) for a slightly lower charging voltage, then it probably should be replaced with one capable of 3 stages.

At the advice of several on this forum, I am going to be leaving my TT unplugged when in storage and will connect the batteries to a 1.5w Battery Tender. I have a battery cut off switch as well that I will use to disconnect the batteries from the system. Will only have it plugged in when prepping for a trip or when actually in use.

I would replace the converter with a PD 4655, and probably buy a new battery, since the life/efficiency of your current battery has likely been compromised. The other alternative is to install a battery shut off switch, which would enable you to disconnect the battery from the converter after it was fully charged.

The WFCO 8955 is a three stage charger and you have the included 12V distribution panel w/120V load center. There are numerous posts on this Forum about problems with this converter and faulty charging, most notably, that it won't achieve any absorption cycle.

The charging section of this converter is easily replaced by a DIY owner or anyone conversant with simple wiring. I'd suggest you replace the charging section with a PD 4655, a drop in replacement. Bestconverter.com is regarded as one of the best online merchants in this online community. I have done business with them and the transaction was seamless.

Good luck with your charging issue.

My first thought would be a bad cell in the battery. A voltage of 13.6 should not boil a battery.

You have a cheap dumb single stage charger. You need a smart three stage charger that will let you add water once or twice a year.

I leave my MH plugged in 24/7/365. I add just a little water about every 4 months. Maybe a couple of ounces for each battery.

Most likely the WFCO Converter/charger is always producing 13.6VDC to your battery for a long time frame. This always started my batteries to boil out fluids. Of course once that starts the battery life is shortened big time.

The fix is to have smart mode converter/charger that works. It needs to drop back to 13.2VDC when just sitting there and this will not boil out fluids like the 13.6VDC potential will do...

I would replace the WFCO converter/charger with a PD or IOTA unit. The WFCO items doesn't get good reviews from the RV'ers maintaining smart mode charging...

I changed my new WFCO WF-8945 Converter out for a PD9260C Converter when I lost a battery due to boiling out fluids in 2009. My remaining three batteries are just now needing to be replaced for low performance... Not bad for 6-7 years of heavy use I reckon...

Roy Ken