Author Topic: Bubbling Battery ???  (Read 1915 times)

Offline A10Boy

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Bubbling Battery ???
« on: 13.04. 2011 19:37 »
One of my bikes has a 12volt system. After a recent ride while cleaning it, I heard the battery bubbling like it was on charge. I assumed the regulator was over charging it, so put the voltmeter across the terminals, started it up revved it and got around 14.8 - 15.1 volts with the lights off. That seems OK to me. [?] The thing is, I took the battery off and three days later its still bubbling, any ideas, is it an internal fault? It seems OK otherwise.

Cheers
Regards

Andy

1960 A10 - Black Golden Flash
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1974 Kawasaki Z1a
Yam XJR 1300

Online muskrat

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Re: Bubbling Battery ???
« Reply #1 on: 13.04. 2011 20:47 »
It's not a new Japanese one is it?
Sorry couldn't resist  *smile*.
I'd sat it's shot.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, .
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Offline a10gf

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Re: Bubbling Battery ???
« Reply #2 on: 13.04. 2011 20:53 »
Agree, must be a sign of imminent failure.

Here's a good read about batteries in general.

A10 GF '53 My A10 website
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Offline lawnmowerman

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Re: Bubbling Battery ???
« Reply #3 on: 13.04. 2011 21:03 »
Sounds like sediment in the bottom - effectively providing a partial short across the plates. Might be time to replace it with a gel-filled jobby.

Jim
1959 A10 SR
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1965 Ferguson 135 tractor
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Offline wilko

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Re: Bubbling Battery ???
« Reply #4 on: 13.04. 2011 23:34 »
Been having a bad run with dying AGM batteries lately on different bikes, i would suggesr a sealed lead acid.

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Re: Bubbling Battery ???
« Reply #5 on: 14.04. 2011 10:41 »
G'day Wilco,
                I was just about to get an AGM for the rHonda whour. What's been the problem?
Agree with Jim as to problem.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, .
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Offline A10Boy

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Re: Bubbling Battery ???
« Reply #6 on: 14.04. 2011 15:09 »
Thanks guys, it's what I thought. This is a three year old lead acid effort that only cost 20 odd quid. I think I'll get a gel one from Stafford. Any makes to avoid, and how much should I pay?

Andy
Regards

Andy

1960 A10 - Black Golden Flash
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1974 Kawasaki Z1a
Yam XJR 1300

Offline MG

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Re: Bubbling Battery ???
« Reply #7 on: 14.04. 2011 19:44 »
I can highly recommend the Hawker Cyclon (AGM) batteries, very sturdy, durable and showing very little self-discharge. Never had a problem with those as long as they are operated within their rated voltages (i.e. no deep discharging or over-charging).

Cheers, Markus
1955 A7 Shooting Star
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Offline A10Boy

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Re: Bubbling Battery ???
« Reply #8 on: 14.04. 2011 21:13 »
Cheers Markus but I need a 12v 14aH battery. Its got one of those electric start things.  *smile*
Regards

Andy

1960 A10 - Black Golden Flash
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1974 Kawasaki Z1a
Yam XJR 1300

Offline MG

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Re: Bubbling Battery ???
« Reply #9 on: 14.04. 2011 22:04 »
I think they are available in various sizes?
1955 A7 Shooting Star
1956 A10 Golden Flash
1961 Matchless G12 CSR

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Online BSA_54A10

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Re: Bubbling Battery ???
« Reply #10 on: 15.04. 2011 10:21 »
All you will ever need to know about batteries is on this site http://www.batteryfaq.org/ .
There is a link to brand names & makers which is handy.
I favour the spiral wound , pressure valve regulated Sealed lead acid batteries.
Their construction is by far the most robust which suits our bikes .
The very low self discharge suits the occasional riding that we do.
Just pick one that has enough CCA to run your electric boot.

The spiral wound batteries ( cyclon is one maker ) will have the highest discharge rates and the lowest voltage drop when cranking the starter.
Bike Beesa
Trevor

Offline alanp

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Re: Bubbling Battery ???
« Reply #11 on: 15.04. 2011 10:28 »
Cheers Markus but I need a 12v 14aH battery. Its got one of those electric start things.  *smile*
If you've got an electric start system fitted, why not get the battery which Steve McFarlane sells for his start system?
Alan
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Offline brackenfel

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Re: Bubbling Battery ???
« Reply #12 on: 16.04. 2011 09:07 »
Hi Andy,
For my 12V bikes (W650 and Laverda) I always buy lead acid Vartas. At my local supplier (Bristol Batteries) if you ask for a discount they don't cost much more than the unknown brands you find at shows / jumbles...  They're not infallable, every make has the odd duff one, but generally they're pretty good.
The Buell now needs one too but acid is out as it lies on its side (!) - guess I'm going to have to fork out big time for that one...

Adrian
1961 A10 650 Golden Flash - Blue
1954 BSA B33
Velocette Viper
Laverda 750 SF1
Kawasaki W650
Buell XB9S
Ariel 350NH & Matchless G3LS in bits...