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Old 07 December 2008, 13:55   #1
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Knackered battery

One of my batteries has lost the ability to hold a decent charge. I was in Halfords yesterday and saw a product that you put in the battery where the water goes and it gives the battery a new lease of life. Does anyone have any experience of this sort of product? Is it too good to be true?
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Old 07 December 2008, 14:06   #2
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Does anyone have any experience of this sort of product?
yus. itts corld battiry assid


gaRf
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Old 07 December 2008, 14:14   #3
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yus. itts corld battiry assid


gaRf
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Old 07 December 2008, 14:24   #4
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Tim, I think it depends whats wrong with the battery...

How "clever" is the charger you are using on the battery? IMHO a sophisticated charger is more likely to "recondition" a dodgy battery - but its usually cheaper to replace the battery than buy a specialist charger - unless you are doing this regularly.
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Old 07 December 2008, 14:32   #5
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The stuff your on about will work on a dodgy battery but not a completely shagged one.
What voltage are you getting?
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Old 07 December 2008, 14:35   #6
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Batteries don't tend to like this cold weather.
Is the boat kept outside?
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Old 07 December 2008, 19:00   #7
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The stuff I saw was a pack of little tablet things.

The boat lives in the water hence the battery lives in a cold damp environment. It's only charge is normally from the engine. I charged it up the other day on a ctek charger but now its only kicking out about 7 volts.
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Old 07 December 2008, 20:03   #8
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I charged it up the other day on a ctek charger but now its only kicking out about 7 volts.
Sounds knackered to me.

What was it reading when it was freshly charged? and after a few hours?

Even if the sulfate tablets get you back to normal voltage - it will happen again and you'll have no idea how long it will resucitate it for. That's at least a PITA and possible a call to the RNLI on a boat - so time to replace it.
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Old 08 December 2008, 03:05   #9
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Its goosed mate, should be 14.2v fully charged and about 12v flat.
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Old 08 December 2008, 06:21   #10
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I was in Halfords
Not the cheapest of outlets Tim
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