That can't happen with newer cars. But it certainly could with the old cars that had generator rather than alternators. A generator will produce a voltage that is the same as the one feeding it, thus if a battery has a slight reverse charge, it will charge it backwards. Or if a loose connection disconnected the battery for a moment, and the old relay type voltage regulators they used kicked out, when it kicked back in, the generator could come up with reversed polarity. Then if the connection to the battery reestablished, it would charge backwards.
Odd the radio wouldn't work though. Back then they used tube type radios, and had a vibrator to convert the DC to AC to transform the voltage up. These would typically work for both polarities, only when they went to transistor radios would reverse polarity not work. Maybe you had upgraded the radio to transistor, or it had a transistor one at that early date. Marshall Ode Coyote wrote: > Weirdest thing happened once. > I had a car battery suddenly reverse polarity right out of the blue. I > was driving, stopped and tried starting again..but to no avail. Lights and > everything were bright but the car wanted to start backwards. The radio > wouldn't play and the fan sucked air rather than blowing it. > I had to completely discharge the battery and charge it back up in the > proper direction. After that, all was normal again. Charging system of the > car was OK too. > [60s Olds Delta 88...didn't notice any lights in the sky or anything] > Ode > > At 09:11 PM 6/23/2003 -0500, you wrote: > >At 01:03 PM 6/23/03, you wrote: > > > >>How could the current flow backwards when you have cells in series and > >>none are backwards. If it > >>reveresed in one of the cells it would have to reverse in all the cells, > >>and energy would be > >>going into all the cells, which would require an external power source. > >>It is physically > >>impossible. If you find a way, let me know, I could use a free energy > >>machine. > > > >I'm a power engineer for AT&T. Cells DO reverse. Usually its caused by > >deep discharge of a cell. When one cell in a string drops in voltage below > >the voltage of the cell before it and behind it in the string then the > >other cells try to bring its voltage up. This causes current to flow the > >other direction from the cell in front and the cell behind the cell > >experiencing cell reversal in an attempt to equalize the voltage. When > >this occurs usually the cell is so damaged it is unable to be charge up > >and instead it heats up trying and may blow up if the gasses it produces > >are unable to vent quickly enough. > > > >+----- Bentonite Clay for sale -----+ > >http://pages.sbcglobal.net/davebe/clay.html > >¦ David Bearrow ¦ > >¦ [email protected] ¦ > >+---- Phone: (972)722-8319 ----+ > > > > > >-- > >The silver-list is a moderated forum for discussion of colloidal silver. > > > >Instructions for unsubscribing may be found at: http://silverlist.org > > > >To post, address your message to: [email protected] > > > >Silver-list archive: http://escribe.com/health/thesilverlist/index.html > > > >List maintainer: Mike Devour <[email protected]>

