Hobby Electronics Basics Dry dead battery

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Subject Author Date
Dry dead battery rabiticide 06-30-08
---> Re: Dry dead battery Jonathan Kirwan06-30-08
Posted by rabiticide on July 1, 2008, 2:41 pm
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Battery now works!!!
I put distilled water into my dry, dead battery, then I charged it,
and it cranks beautifully and started my motorcycle!!!

The conducty thingies (anodes and cathodes?) don't go all the way down
so I think I boiled the water down to that level at which point the
contact was broken and the overcharging stopped. This is my
hypothesis. The H2SO4 didn't go anywhere because it was below that
level and has a much higher boiling point than water.

I was asking guys over at the motorcycle group and they were saying
that a lot of battery chargers are too powerful for motorcycle
batteries. Thanks for the help!!


rK

Posted by christofire on July 1, 2008, 3:45 pm
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> Battery now works!!!
> I put distilled water into my dry, dead battery, then I charged it,
> and it cranks beautifully and started my motorcycle!!!
>
> The conducty thingies (anodes and cathodes?) don't go all the way down
> so I think I boiled the water down to that level at which point the
> contact was broken and the overcharging stopped. This is my
> hypothesis. The H2SO4 didn't go anywhere because it was below that
> level and has a much higher boiling point than water.
>
> I was asking guys over at the motorcycle group and they were saying
> that a lot of battery chargers are too powerful for motorcycle
> batteries. Thanks for the help!!
>
>
> rK


Huh? But you said it was dry (i.e. not wet) and I believe the definition of
the word isn't specific to H2O alone.

Surely if you were aware of acid sloshing about at the bottom of the case
you wouldn't have used the word 'dry'!?

Chris



Posted by rabiticide on July 1, 2008, 4:51 pm
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uh. no sloshing, and i didn't turn it upside down. It seemed pretty
dry. I moved it side to side briskly and neither felt nor heard
anything "slosh". But how else would this be explained? Is H2SO4
pretty viscous?


rK

Posted by Sjouke Burry on July 1, 2008, 4:54 pm
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rabiticide wrote:
> uh. no sloshing, and i didn't turn it upside down. It seemed pretty
> dry. I moved it side to side briskly and neither felt nor heard
> anything "slosh". But how else would this be explained? Is H2SO4
> pretty viscous?
>
>
> rK
a bit oily.

Posted by christofire on July 1, 2008, 6:12 pm
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> rabiticide wrote:
>> uh. no sloshing, and i didn't turn it upside down. It seemed pretty
>> dry. I moved it side to side briskly and neither felt nor heard
>> anything "slosh". But how else would this be explained? Is H2SO4
>> pretty viscous?
>>
>>
>> rK
> a bit oily.


I wonder what substance they use in jelly-electrolyte lead-acid cells ... to
suspend the acid in a jelly.

Chris



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