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Date: Tue, 10 Dec 2002 21:17:54 +0000
From: Mike Page
User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0
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Subject: Re: testing AA batteries?
NNTP-Posting-Date: Tue, 10 Dec 2002 21:16:34 +0000
Lee Carkenord wrote:
>My household uses a lot of AA alkaline batteries.
>I often want to test one of these batteries to see if it has any
>remaining useable "life".
>I have several digital voltmeters /multimeters available.
>I'm looking for a really really simple way to put an individual AA
>cell under a lite load to run a voltage check.
>Whats a good simple not-techie way to do this?
>What is the voltage that is the dividing line between "good" and
>"replace"......? This is for alkaline AA's only.
>Thank you Lee Carkenord
Well, it's not light load but I usually short them out on the 10A meter
range for 1-2s. A brand new AA reads 7-8A or above (depends on brand),
4-5A is about half life, 3A or less is discardable.
Of course it depends on your leads, meter, whether it is fused etc but
with experimentation the method is quick and reliable.
Mike Page email@example.com
BEng(Hons) MIEE www.eclectic-web.co.uk
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