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Battery Desulfation
Find out how to desulfate/desulphate and rejuvenate lead acid batteries

Every lead acid battery has a resonant frequency at around 2 to 6 megahertz. If sufficiently pulses of electricity (high frequency, high voltage, but low power) are sent into the battery, rhythmic beating (resonance) of the plates causes the crystalline deposits to break up and the sulphate returns to the electrolyte solution. This process can take a matter or weeks during which time the battery must be trickle charged (in parallel with the desulphator) so that the battery ends up reconditioned and fully charged.
Note that the voltage measured across the battery terminals will drop as the desulphation takes place as the internal resistance of the cells is reduced by the clearing of the crystals on the lead plates.

Build a Battery Desulfator

For more infomation about battery desulfation, click here to visit the very useful Lead Acid Battery Desulfation Newsgroup (6). Also try this link to Mikey Sklar's Mini-D 12V battery desulfator (7), and his second generation battery desulfator (8) with the addition of a display and data logging.

Web Link References
(1) http://www.reuk.co.uk/Lead-Acid-Batteries.htm
(2) http://www.homepower.com
(3) http://home.comcast.net/~ddenhardt201263/desulfator/lowpower....
(4) http://home.comcast.net/~ddenhardt201263/desulfator/highpowe....
(5) http://home.comcast.net/~ddenhardt201263/desulfator/desulf.h....
(6) http://leadacidbatterydesulfation.yuku.com/
(7) http://screwdecaf.cx/mini-d.html
(8) http://www.flickr.com/photos/11461247@N02/3873767396/

Article from REUK.co.uk:
http://www.reuk.co.uk/Battery-Desulfation.htm
Published: 5th October 2009
© REUK 2010