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From: jn163051@longs.LANCE.ColoState.Edu (Joel Nevison)
Newsgroups: comp.sys.handhelds
Subject: Rechargeable batteries for the hp28s
Message-ID: <4102@ccncsu.ColoState.EDU>
Date: 11 Feb 90 02:02:14 GMT
References: <5923@skinner.nprdc.arpa> <6824@sdcc6.ucsd.edu> <7960@cbnewsh.ATT.COM>
Sender: news@ccncsu.ColoState.EDU
Reply-To: jn163051@longs.LANCE.ColoState.Edu (Joel Nevison)
Organization: Colorado State U. Center for Computer Assisted Engineering
Lines: 16

I would not reccomend using NiCd batteries in the 28s for the following
reasons:
1) NiCd batteries won't last as long as a good alkaline battery, NiCd's
hold less amp hours per unit volume.   NiCd's also tend to self discharge
over long periods of time ie. several months.   This could produce some
nasty surprises when you find your 28s NiCds drained (memory lost).
2) NiCd's forte is the ability to produce high currents for a short time, as
opposed to the requirement of a 28s (low currents for a long time).
3) What are you going to power your 28s with while your NiCd's charge?
Note - most chargers take eight hours.
4) How often do you need to replace your batteries anyway?   Mine have been
going for over 14 months now.
I'd say go with HP's reccomendations on this one.

Joel Nevison  "The mole"  "I'm underground"
jn163051@longs.lance.colostate.edu