Hi guy's, I'm joining in for a while. I've got a big stack of bad batteries that
have resisted all means of desulfating I've tried. So I grabbed one and
connected it as in the simple arrangement on the first page, I used a small PM
DC motor which uses about 1 amp and after about 2 minutes it started
spinning, the voltage of the bad battery went straight to almost the voltage
of the two series batteries which was 25.6 volts then as the bad battery
voltage dropped under the pressure of the voltage, a voltage difference
appeared and became more and more which allowed the voltage difference to
cause more and more current. After stopping it the bad battery went to 8.4 volts
where it is now sitting. This is promising because 12 months or more ago when
I tried to desulfate this battery it wouldn't rest above 5 volts.
I have noticed when reclaiming batteries it helps to run a small load from a
battery that will not take charge, by doing that it causes the current from the
load to "loosen the battery" a bit, then it will take charge.
I think this is doing a similar thing but with an external power source and
rather than draining the bad battery it is charging it, of course a small load
cannot be run directly from the bad battery unless the bad battery already
has some charge enough to run a load.
Anyway I'll see what happens with this setup after a while, I need to see if I
can arrange a useful load for the motor like a small generator.
I have a stack of about 10 big bad batteries. I have nothing to lose unless
one blows up in my hut. I don't think that will happen with a 1 amp load
though.
Cheers
have resisted all means of desulfating I've tried. So I grabbed one and
connected it as in the simple arrangement on the first page, I used a small PM
DC motor which uses about 1 amp and after about 2 minutes it started
spinning, the voltage of the bad battery went straight to almost the voltage
of the two series batteries which was 25.6 volts then as the bad battery
voltage dropped under the pressure of the voltage, a voltage difference
appeared and became more and more which allowed the voltage difference to
cause more and more current. After stopping it the bad battery went to 8.4 volts
where it is now sitting. This is promising because 12 months or more ago when
I tried to desulfate this battery it wouldn't rest above 5 volts.
I have noticed when reclaiming batteries it helps to run a small load from a
battery that will not take charge, by doing that it causes the current from the
load to "loosen the battery" a bit, then it will take charge.
I think this is doing a similar thing but with an external power source and
rather than draining the bad battery it is charging it, of course a small load
cannot be run directly from the bad battery unless the bad battery already
has some charge enough to run a load.
Anyway I'll see what happens with this setup after a while, I need to see if I
can arrange a useful load for the motor like a small generator.
I have a stack of about 10 big bad batteries. I have nothing to lose unless
one blows up in my hut. I don't think that will happen with a 1 amp load
though.
Cheers
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