Re: Rechargeable Batteries

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#725

From: Richard L Taylor
Date: Sun, 26 Feb 1995 02:14

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I have used rechargeable batteries quite successfully, but it was a real
pain to have to recharge all those things. I spent a great deal of time
wiring them and monitoring them. Many people say that Ni-Cd lifetime is
closely tied to use history, so you want to be careful in the way they
are used and recharged.

On the other hand, I now ask each student to bring one battery. We use
them, I toss the dead ones, and I refrigerate the ones that we didn't use
or that are still in excellent shape. (for D-cells I test them with a
cheap analog ammeter, and keep the ones that give a short circuit current
of 10 A.) The Refrigerated ones mostly last a while, and I use those in
demos and other projects. My biggest problem since I started using
digital meters is the 9V batteries, so I have most kids bring D-cells,
and some bring 9V, and that lasts me for the year.)

Richard Taylor
Pearce H. S.
Richardson, TX

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Date: Sat, 25 Feb 1995 20:14:56 -0600
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From: Richard L Taylor <rtaylor@TENET.EDU>
Subject: Re: Rechargeable Batteries
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