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Path: utzoo!henry
From: henry@utzoo.UUCP (Henry Spencer)
Newsgroups: net.analog
Subject: Re: Rechargeable Batteries
Message-ID: <4646@utzoo.UUCP>
Date: Fri, 16-Nov-84 11:47:59 EST
Article-I.D.: utzoo.4646
Posted: Fri Nov 16 11:47:59 1984
Date-Received: Fri, 16-Nov-84 11:47:59 EST
References: <3292@rabbit.UUCP>
Organization: U of Toronto Zoology
Lines: 15

> the standard "9 volt" NiCads wouldn`t work for more than a few hours
> in my smoke alarm before setting off the "low battery" warning.

NiCads are a poor choice for long-term low-drain applications anyway,
because they do not hold charge well.  This is why any NiCads you buy
come with an injunction to charge before use; they will have lost their
charge while sitting on the shelf.

This situation is starting to change; I've seen datasheets on new NiCad
designs that do hold their charge better.  But NiCads are still nowhere
near as good as alkalines for applications where they have to sit idle,
or nearly so, for months before being called into action.
-- 
				Henry Spencer @ U of Toronto Zoology
				{allegra,ihnp4,linus,decvax}!utzoo!henry