nuckolls.bob(at)aeroelect Guest
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Posted: Thu Aug 30, 2012 1:06 pm Post subject: Charger needed to revive 18 aH Lead Acid Batteries |
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If it's 100mAs or less that may just be the ticket to success.
Yes.
Just for grins, I took one of the 12a.h. batteries I
bought from you that has been on a Battery Tender
for the last several days (green light on, in maintenance
mode. Fooey, didn't read the float voltage first) and
hooked it to a 14.6v power supply. Charge current jumped
to 300mA and over the next 12 minutes it fell to 100mA.
Another data point. After one hour at 14.6 volts, current
going into the battery is still about 90mA. This suggests
to me that the battery has stopped converting incoming
energy into changes in chemistry and that 100mA may
indeed be too large a value for marking end-of-absorption-
charge cycle. The values you deduced for the Chargtek
device of 200-300 mA may indeed be more practical.
Bob . . .
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