Originally Posted by garbonz
okey dokey. keeping them from sulfating and reversing it, may be different, but maybe not. BSChE; University of Michigan 1975, MPh Environmental and Industrial Health 1984.
Pulsate away, maybe it is the solution after all
Like I said, have not "used" the degree for anything except getting into the Air Force (life sucked for pure science graduates in 1972).
The whole "stage" charge concept works on the way the battery construction affects the batteries ability to take a charge (remove lead sulfate from the plate by forcing it back into the electrolyte based on the amount remaining and how deep in the lead the sulfate ion is buried). No generalization is accurate, including this one, but it works for me to understand how charge staging works.
A deeply discharged battery has the lead converted to lead sulfate fairly deeply and it makes sense (to me anyway) that more force (volts) would be needed blast that large sulfate ion off the lead and back in solution. That much voltage would hurt the battery (I would think), if it was applied for any appreciable amount of time, so the unit pulses (with a long off pulse to allow the electrolyte to equalize and cool between hits).
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