EDTA experiences - Page 3

 

Martin Riddle wrote:

battery.

months or so with out charging, and would not fully

experimenting.

<snip>

I've also had a positive experience with a "desulfator" circuit I built up.

I have an old starting battery that had been sitting for a -long-
time(few years?),and was pretty much "dead",it wouldn't even take a
charge,would draw no current.
So I connected a 12V "wall-wart" to the battery and desulfator and left
it for a month,and sure enough it started coming back to life!
Nowhere near it's rated capacity,but better than dead.
After it had re-gained enough life to take a charge and run the
desulfator for a while,I cycled it like that..
charge/desulfate(discharge)/charge/repeat.
After a few more charge/discharge cycles with the desulfator as a load
it would now run a headlight (both high and low beams) for a decent
amount of time.But still nowhere near rated capacity(but,remember it was
*dead* as a doornail before I started).
It will hold enough charge to run some lighting,or a radio,etc. for a
while,I'd guess.

Not bad for an otherwise scrapped battery. Atleast it's somewhat useful
now,-it will never start a car again though.