[Shop-talk] battery tender--Thanks

[Bob Spidell]

Just to be clear, overcharging isn't 'boiling,' like boiling water. The too-high charging voltage causes the sulfuric acid electrolyte to release hydrogen gas; the bubbles are the result of a chemical reaction, not heat. I don't remember the equation but, basically, you're releasing the H2 from H2SO4. The SO4, 'sulfate,' will settle to the bottom of the battery and short out the plates. 

Bob 

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Bob Spidell - San Jose, CA 

----- Original Message -----

Thanks to all who replied! 

It is always a learning experience for me when I deal with a new issue 
with my Roadsters. (learning to be a petrol head one issue at at time.) 
I didn't know it was the actual boiling of a battery that caused the 
release of the dangerous gasses. 

I was told some years ago that you have not had a complete day until you 
have learned something new. Yesterday was a comlete day! 

PEACE :-) 

Tim