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Author: Subject: More battery problems!
chrisbmxr

posted on 18/7/18 at 06:36 PM Reply With Quote
More battery problems!

So, after fitting a brand new battery in my MK Indy two weeks ago, I noticed today that it had leaked acid everywhere! Luckily the acid was only in the area immediately around the battery but it's clearly been there a few days as the metal fixings nearby have oxidized and gone white and crusty.

Is this a dud battery?

Is there a problem with my cars charging circuit? How can I test it?

Are Gel batteries any better?

I'm currently trying to clean all the acid away with baking soda and water!

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theconrodkid

posted on 18/7/18 at 06:40 PM Reply With Quote
most batteries these days are sealed, if it is leaking it is either a leak in the case, take it back or overcharging, you would smell the battery if it was overcharging, also it would get hot.
charging rate should be around the 14-14.5 volt range





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russbost

posted on 18/7/18 at 06:54 PM Reply With Quote
It does sound like overcharging, are you getting a weird sort of metallic smell that you can almost taste?

As said, to check, just use a voltmeter, check with engine at idle & no load, should be around 14 -14.5V, no higher than 14.5, then increase revs to around 2 - 3,000, voltage should not increase significantly & defo not outside the parameters above. Then put a load on, like dipped headlights, & you would expect a slight drop in voltage at idle, which should increase again at say 2-3,000 rpm, but again not above 14.5v





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chrisbmxr

posted on 18/7/18 at 07:24 PM Reply With Quote
quote:
Originally posted by russbost
It does sound like overcharging, are you getting a weird sort of metallic smell that you can almost taste?

As said, to check, just use a voltmeter, check with engine at idle & no load, should be around 14 -14.5V, no higher than 14.5, then increase revs to around 2 - 3,000, voltage should not increase significantly & defo not outside the parameters above. Then put a load on, like dipped headlights, & you would expect a slight drop in voltage at idle, which should increase again at say 2-3,000 rpm, but again not above 14.5v


Thanks, I'll test it tomorrow.

No smells that I could notice to be honest!

If it is overcharging, I presume a new regulator is needed? It's a Fireblade 919cc engine, running a full sized car battery.

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CosKev3

posted on 18/7/18 at 09:09 PM Reply With Quote
If it is overcharging get yourself a newer Mosfet type regulater.
You can buy a kit that comes complete with new plugs and wiring

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chrisbmxr

posted on 19/7/18 at 12:59 PM Reply With Quote
So, tested it today.

Battery standing - 12.7v
Engine running (idle but with choke on) - 17v ... and climbing (I turned it off at this point as I could hear the battery sizzling!)

Sounds to me like a busted regulator? Gonna need another new battery now as well

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