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

BFL13
Explorer II
Mar 29, 2017
Edited out my confusion--now clear that HCL is 210 and ECL is 225.
BFL13
Explorer II
Mar 26, 2017
time2roll wrote:
They did say 12 month warranty so maybe they are GC2-HCL and not PF-GC2.

See above--did you get Trojan T-605s for $83 ??? :)
time2roll
Nomad
Mar 26, 2017
They did say 12 month warranty so maybe they are GC2-HCL and not PF-GC2.
BFL13
Explorer II
Mar 26, 2017
Seems to be a new line-up

http://interstatedealers.com/pdf/MKT1233-00_GolfSellSheet_LR.pdf

Compare with T-605 for 210 and T-105 for 225

http://www.trojanbattery.com/pdf/TRJN0111_ProdSpecGuide.pdf

Hmmmmm--does Interstate have a new source for its GC2s?

Note here on Interstate site, link to GC2 gets you a Trojan page.

http://corporate.interstatebatteries.com/msds/
time2roll
Nomad
Mar 26, 2017
Just reading what the label said as a reference point. BTW $83.99

http://www.interstatebatteries.com/p/golf-car/group-number-size/group-number-size-gc2

Costco item number 850284
BFL13
Explorer II
Mar 26, 2017
What's an Interstate 210? They used to be 208, 232, etc.
time2roll
Nomad
Mar 26, 2017
Four new Costco/Interstate GC2 210 a/h today has cured the issue. :B
Long overdue. Solar had them topped up so much faster... made a real difference.
2oldman
Explorer II
Mar 20, 2017
time2roll wrote:
Definite loss of capacity. .
I'm sure a couple (or 6) new batteries will be a very pleasant return to the capacity you expect.
time2roll
Nomad
Mar 20, 2017
Definite loss of capacity. I think the solar has been masking the issue for some time. Yes I am concerned with potential expelling of electrolyte or worse.

Thanks again MEX for the explanation.
MEXICOWANDERER
Explorer
Mar 20, 2017
Fiberglass mats can clog with shedded plate. Avoiding hydrodynamic theory let me put it this way...older batteries can gurgle. I have seen GC220's burp so bad undergoing a 40 ampere charge they expelled electrolyte out of an opened cap.

Guesswork always loses. Without total kWh usage data and maintenance values is it not pointless to ponder the exact state of the batteries? Seldom cycled properly maintained GC's can endure a dozen or more years.

Carbon pile load test, hydrometer analysis, and impedance testing is the only way to get a grip on the state of these accumulators.