Has anyone on the list seen the youtube videos on rejuvenating a 12 
volt battery and tried this. I am a bit skeptical of what could be a 
backyard chemistry experiment that becomes a potential ticking time 
bomb. The poster on youtube drains the exhausted 12 volt battery of 
acid and flushes it out with a solution of water and baking soda. Okay, 
makes sense so far. Then the battery is filled with a solution of alum 
and water and set to charge. The poster later suggests that a bit of 
salt may be added to prohibit the battery from freezing in extreme 
temperatures. I would hate to rejuvenate a battery in this way if it 
might pose any sort of hazard with electrical damage, seepage, 
excessive offgassing or some other more disastrous consequence. I hope 
this is not considered a Friday topic since a lot of our vans are 
second or third vehicles and do not get enough battery life by 
potentially sitting so much unless kept on a constant trickle charge. 
Any chemists or electrical gurus on the list have any input on this. 
Here is the URL for the video I watched with a healthy degree of 
skepticism. http://www.youtube.com/watch?v=Supe1a3LW2U

David Clarkson
Equipment Consultant
Southern Automotive Garage Equipment
sageautoequipment.com
dvdclarksn@aol.com