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- Path: sparky!uunet!cs.utexas.edu!not-for-mail
- From: tquinn@heartland.bradley.edu (Terry Quinn)
- Newsgroups: misc.consumers
- Subject: Re: rechargeable batteries
- Date: 9 Jan 1993 09:27:07 -0600
- Organization: UTexas Mail-to-News Gateway
- Lines: 34
- Sender: daemon@cs.utexas.edu
- Message-ID: <9301091527.AA25464@heartland.bradley.edu>
- Reply-To: tquinn@heartland.bradley.edu
- NNTP-Posting-Host: cs.utexas.edu
-
-
-
- > NiCad batteries should be stored in the uncharged state and then charged
- > before using, i.e. the night before. When fully charged and on the shelf,
- > they SLOWLY lose their charge - I recall something like 1% per day or so.
- > NiCads can also develop memory effects. If you have a nicad that is 1/2
- > discharged and you recharge it and do this a few times, it will lose the
- > effect of fully discharging (or something like that). One way to fix this is
- > to deep discharge the battery, i.e. fully discharge it (but don't short it out
- > to do this).
-
- There was a good discussion going on in rec.video on this subject.
- Someone posted some factory service information from one of the
- manufacturers of nidads. I won't repeat it all here, except for
- two important points:
-
- 1. The memory effect rarely occurrs except under very controlled
- conditions.
-
- 2. Do NOT "fully discharge" your nicads or you may damage them.
- I was doing this myself with a special discharger until I read the
- article. Discharging the nicad in a camera is safe, because it
- stays above a critical voltage level. If you drop below that
- level (1.1v per cell -- that is correct, only slightly below the
- nominal 1.25 v per cell) you can damage one or more cells by
- reverse charging them.
-
-
-
- --
- Terry Quinn
- Germantown Hills, IL
- tquinn@heartland.bradley.edu
- from Compuserve . . . >INTERNET: tquinn@heartland.bradley.edu
-