Coach Batteries Are Very Hot!
I noticed last night the coach batteries were very hot in my 2013 3051s so I turned the coach battery switch to off and disconnected both batteries. After they cooled down a bit, I removed they from the coach and sat them on a wooden picnic table to cool off! Much to my surprise, one of the batteries was dropping in voltage as it cooled, all the way down to 6 VDC! After further investigation, I discovered a dying cell in the battery! Wow did those batteries get hot!!!! I could have cooked dinner on them...
New batteries installed this morning and I have been monitoring the battery voltage with a slaved-in multi-meter to monitor the converter voltages. So far voltages have been almost perfect 13.6 VDC (absorption mode) from the WF-9855 converter. So far so good! This was my first ever encounter with a bad coach batter about to go into thermal runaway and it scared me to death!
Was monitoring other systems since my CO2 detectors were going off on occasion/ randomly at night (every other 3 or 4 days) so I was searching for that problem when I discovered the coach batteries overheating!
So if your CO2 detector is going off randomly and the step cover over the coach batteries feels warm to the touch then beware; a hot set of batteries can ruin your day!
2016 Days Camping so Far: 24
2013 3051S Forester
2013 Elantra GT (Toad)
WashU EMBA "39