NiCad batteries not in use for a long time/discharged
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From: Archimedes' Lever on 31 Mar 2010 20:25 On Wed, 31 Mar 2010 11:07:53 -0700, "JosephKK"<quiettechblue(a)yahoo.com> wrote: >On Sun, 28 Mar 2010 11:06:30 -0500, Gary Peek <mylastname(a)mycompanyname.com> wrote: > >>Any NiCad battery experts out there? For a NiCad battery pack that >>has not been in use for a long time, like a year, and has discharged >>well below the point of operating the circuit it was powering, what >>is the best way to restore it to use? Is charging it in the normal >>manner good enough, or are a couple of charge/discharge cycles better? >> >>--- news://freenews.netfront.net/ - complaints: news(a)netfront.net --- > >NiCad reconditioners work by deep cycling the cells a couple of times. It >does not help NiMH cells though. 100% deep cycling is done in satellites >that use NiCad batteries. >As for dumping a large cap across a cell to blow dendrites out, i have had >good luck with that as well, though once i just hooked one across a car >battery for a fraction of a second (using thin wire, it started smoking). > >YMMV I have a whole box of 50 AA 1.24 V NiCads here. Just charged 4 the other day, after the box sat in my storage for the last 5 years. They charge up normally, and charge to full voltage, and operate at full rated capacity, no problem. No zapping it first, no deep cycles. Just charge it and go. |