What to do with a battery with one bad cell

Submitted: Monday, Jan 31, 2005 at 16:46
ThreadID: 19961 Views:1276 Replies:4 FollowUps:1
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A recent thread mentioned hydrometer readings, and I think it was Jimbo who was trying Inox to revive an old (but not completely dead) battery. I have a two batteries I'm checking.

One battery is a large exide that returns high hydrometer readings (in the green - 1300) and suggests a good state of charge but on a 3 amp load (tv/vcr) only lasts for a couple of hours. Does this suggest sulphation, and would inox fix it?

The second battery is smaller, but runs the same 3 amp load for several hours. Hydrometer readings are in the green (1300) for all cells except one which reads 1175 (red). Is it possible for one cell to sulphate, and would inox fix it?

Thanks,
Rob.
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Reply By: Leroy - Monday, Jan 31, 2005 at 16:59

Monday, Jan 31, 2005 at 16:59
Rob,

I would toss them. There was someone on another forum that did the 'inox experiment' and found the battery lasted 40 extra days before it wouldn't take a full charge again. So I supose it did work a little. Put the money towards a new batt.

Leroy
AnswerID: 95872

Follow Up By: Member - Davoe (WA) - Monday, Jan 31, 2005 at 17:11

Monday, Jan 31, 2005 at 17:11
yep batteries might be fairly expensive but they have a pretty limited life get over it and move on with a new one
0
FollowupID: 354672

Reply By: Magnus - Monday, Jan 31, 2005 at 20:38

Monday, Jan 31, 2005 at 20:38
Rob,

This site may help. If you have the time and inclination the suggestions are worth a try.

Try This

Have fun

Cheers

Magnus
AnswerID: 95911

Reply By: Chucky - Monday, Jan 31, 2005 at 21:20

Monday, Jan 31, 2005 at 21:20
get a capactance (spelling?) test down on the battery. You can get this done at any auto elect. and most tyre places I have been to - like bobjane, beaurepairs etc, can do one as well. It will test the amount of charge you battery holds by placing a large load across it. It's simple if you have the tester and is a very good indication of the true condition of the battery.

Cheers
AnswerID: 95921

Reply By: Rosco - Bris. - Monday, Jan 31, 2005 at 23:38

Monday, Jan 31, 2005 at 23:38
Rob

I seem to recall that one cell usually packs it in first. I think from memory it's one of the 2 centre pair. Can't remember which. I had a batt some time ago which came with one of those in-built hydrometers in the cap of the particular cell. When it said "I don't want to play anymore" it was time for a new batt.

Cheers
AnswerID: 95953

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