I have this vision of small bubbles floating to the surface as the battery creates some gas while charging. Mine seem to produce a large gurgle. It would seem a lot of gas is trapped and then makes its way to the surface. Can really hear it plain and clear as if a large bubble forms below the plates and releases when bumped or disturbed.These are vintage 11 year old Costco GC2 batteries. I assume should be replaced.Anyone experience this? I believe it has been going on for at least a year.

batteries can bubble a little while charging ,BUT yours sound like there boiling?

11 yerars! That's great but time to replace.

My U-2200s used to gurgle like that, so I don't know if that is a sign they are near death, but those U-2200s were near death, so maybe?ISTR more gassing is a sign of "age" but how much is too much? No idea.You have so much solar that IMO you have been riding on solar with weak batteries for a while now and not seeing it, because the solar is doing the work, and you don't use much 12v overnight when solar is not helping.I think you know that. :) Anyway you got your money's worth from those batts, so just go and get some more of those nice 232s from Sam's or Costco at their insane low prices and carry on for another ten years or so :)

I had a brand new one which was actually boiling...also, the battery sides were very hot. Defective battery. In your case, IMO, 11 years a long run....

The screwy31 gurgled every single comlpete recharge and lasted nearly 500 deep cycles. Likely has another shallow 100 cycles accumulated since. Still gurgles when up in the 14.5+ range.Not something I stress about.

Batteries have quite a gurgle | Good Sam Community

24 Replies

LadyRVer
Explorer II
Mar 20, 2017
I had a brand new one which was actually boiling...also, the battery sides were very hot. Defective battery. In your case, IMO, 11 years a long run....
BFL13
Explorer II
Mar 20, 2017
My U-2200s used to gurgle like that, so I don't know if that is a sign they are near death, but those U-2200s were near death, so maybe?

ISTR more gassing is a sign of "age" but how much is too much? No idea.

You have so much solar that IMO you have been riding on solar with weak batteries for a while now and not seeing it, because the solar is doing the work, and you don't use much 12v overnight when solar is not helping.

I think you know that. :) Anyway you got your money's worth from those batts, so just go and get some more of those nice 232s from Sam's or Costco at their insane low prices and carry on for another ten years or so :)
Lwiddis
Explorer II
Mar 20, 2017
11 yerars! That's great but time to replace.
midnightsadie
Explorer II
Mar 20, 2017
batteries can bubble a little while charging ,BUT yours sound like there boiling?

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Batteries have quite a gurgle

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