Batteries have quite a gurgle

[time2roll]

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.

[RJsfishin]

If their capacity is still good, and they are not gassing excessively.....to the point of accumulating acid and corrosion on the terminals, I would see how long they will really go.
I really don't know if my 6'ers "gurgle" or not, but if they do, its working for me 🙂

[Dennis12]

Id try to get a couple more years out of them.

[Ed_Gee]

My 4 1/2' year old Interstate GC2 batteries began excessive bubbling and gurgling under charge when they started going bad. I am truly surprised you got 11 years out of your batteries. I often wonder if people with such batteries for so many years are even using a fraction of the rated capacity of those batteries. I'd be surprised if 11 year old batteries even had as much as half their new capacity rating.

[2oldman]

time2roll wrote:
These are vintage 11 year old Costco GC2 batteries. I assume should be replaced.

Yeah, probably.

[time2roll]

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

Not really boiling. And I have seen boiling. It is a large release of gas all at once as if it was trapped for a period and then released.

[landyacht318]

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.

[LadyRVer]

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]

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]

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

[midnightsadie]

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