Battery query

Submitted: Wednesday, Feb 24, 2010 at 23:33
ThreadID: 126402 Views:2006 Replies:4 FollowUps:0
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I have unsealed batteries in our van (they came with the van) and I am finding that in one of the batteries one cell is using more water than the other cells.

The van is currently in 'outside' storage and no appliances are running.

Does anyone know if this 'one thirsty cell' could be an indication of a problem now or in the future?

I do not wish to get caught in the outback with a dud battery and my knowledge on batteries is limited.

Bob
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Reply By: Turist - Thursday, Feb 25, 2010 at 00:02

Thursday, Feb 25, 2010 at 00:02
If there is a significant difference in water use for one cell then yes you can expect a problem in the near future.
Could be a sign that the plate in that cell is overheating due to higher resistance across the separator plates.

Minor variations in water use is normal.

Bob
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AnswerID: 579930

Reply By: galacticbob - Thursday, Feb 25, 2010 at 04:59

Thursday, Feb 25, 2010 at 04:59
BOB

Many thanks for your speedy reply, I thought that may be the case.

Just another query, am I correct in assuming that it is normal for acid to be bubbling away strongly on the hot days.

I top up every 2 weeks

Bob
AnswerID: 579931

Reply By: Turist - Thursday, Feb 25, 2010 at 05:36

Thursday, Feb 25, 2010 at 05:36
If the batteries are bubbling then either;
Charge rate too high, incorrect setting on solar controller
Batteries are past use by date, sulphated cells
Combination of above

Bubbling batteries are creating gas, hydrogen sulphide, caution, it can go bang if ignited by a spark.
Prior to disconnecting anything in the battery box be sure that gas has been vented.

Bob
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Nobody is getting any younger.

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AnswerID: 579932

Reply By: galacticbob - Thursday, Feb 25, 2010 at 05:51

Thursday, Feb 25, 2010 at 05:51
Bob

Thanks for your informative reply.
AnswerID: 579933

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