In my personal experience, I have noted cases where the equipment did not
perform properly using rechargeable batteries. In particular, I recall
experiencing this problem for a wireless microphone / guitar set that I
purchased a few years ago. The system simply did not work properly when a
rechargeable 9V battery was used in the transmitter. However, it worked great
when an alkaline cell was used.
The set came with a disclaimer, similar to the one noted below.
So to answer your question, in this case, it was a functionality issue that
must have drove the disclaimer.
DB
> ----------
> From: m...@cjbdev.demon.co.uk[SMTP:m...@cjbdev.demon.co.uk]
> Reply To: m...@cjbdev.demon.co.uk
> Sent: Wednesday, November 22, 2000 9:27 AM
> To: emc-p...@ieee.org
> Subject: Rechargeable Batteries
>
>
> I hope you'll all be patient with what might be a question with an
> obvious answer: why do so many battery operated equipments
> state that they must not be operated using rechargeable batteries?
>
> I appreciate that NiCads have a nominal voltage of 1.2V compared
> to Alkaline and Zinc Chloride's 1.5V, but is there something else of
> which I'm not aware? Higher output impedance as they grow old?
> Greater chemical toxicity? More likely to leak corrosive material?
> More likely to explode?!
>
> Is it functionality, safety or EMC that worries the instruction book
> writers?
>
> Regards, Mark
> --
> Mark Hone
>
> Wellman CJB Limited Email: m...@cjbdev.demon.co.uk
> Airport Service Road Tel: +44 (0)2392 629239 (Direct)
> Portsmouth, Hampshire Tel: +44 (0)2392 664911
> PO3 5PG, ENGLAND Fax: +44 (0)2392 697864
>
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