Battery question

[marty1300]

2011 tioga Montara, has WFCO WF8955AN Converter
Rv is plugged into house, it was completely closed up and propane was off, the propane alarm was going off Saturday am I went in hit reset opened 2 vents and left, came back later and it was going off again. I checked the batteries they are under steps near the propane detector. The voltage was good at 13.68 but I could hear a real slight gurgle when very close to them, also a bubble or 2 while I had the tops off. Water level looked okay just below top but the plates were covered. I shut everything off and unplugged from house. The voltage immediately dropped to 13.49. On Sunday (today) I checked voltage today at 2:00 and it was 12.74, then about 4:30 pm it was 12.68 . Could my batteries be going bad? Trying to locate the reciept I believe they are from 2014 or 2015. Connections look good no corrosion.

Any ideas ? Thank you marty

[marty1300]

OP here- temps have been in the upper 90's here in Florida, I will keep an eye on them. checked at 7:00 pm eastern and they were at 12.65 with nothing on but the propane detector and any parasitic drag I don't know about

Thanks for the info/advice

[MrWizard]

what was/is the ambient air temp, how hot are the batteries

your batteries voltage is find, i suspect the 'detector' was alarming because of the very slight amount of hydrogen sulfide gas that was being released

13.68v might be a tad high for float voltage at 100*

depending on battery chemistry

at high summer temps setting unused, a low amp battery tender is a better option than some converters for correct float voltage
a battery is unlikely to bubble a pair of batteries

[time2roll]

marty1300 wrote:
2011 tioga Montara, has WFCO WF8955AN Converter

Any ideas ? Thank you marty

WFCO is junk any way. I recommend replacement.

http://www.bestconverter.com/Boondocker-Main-Board-Assembly-for-WFCO-8955_c_196.html

[KD4UPL]

Batteries seem great by those measurements. There will always be bubbles when chargimg.

[SidecarFlip]

Anytime you disturb your batteries, you'll get some release of bubbles, they get trapped by the plate seperators. If I were you, I'd look into getting a Progressive Dynamics converter, much better than the WFCO. Probably sulphated to some degree. I'd monitor the drop over a 24 hour period to see if they are on the way out,,,

[Mandalay_Parr]

12.6 is full battery. 12.1 is 50% discharged.