A LiIon might be located (3.6V) that could be boosted to 5V regulated.
There MIGHT be a paper-thin NiMH, but I doubt it.

A CR2032 can't even deliver 10mA.

A 10' drop is a very heavy drop! Not many products will survive that, except
the older Fluke meters. 

Chris Emerson wrote:

>I'm looking for a battery for a (hobby) project, and I'd be interested
>in any suggestions.
>
>Requirements (most are flexible):
>* Needs to be quite small; the usual AA/AAA are a bit bigger than I'd
>like.  Something about the size of a CR2032 would be great, but could be
>a bit bigger.
>
>* Current needs are 5-10mA continuously (a small PIC and other bits),
>with regular short bursts of about 30-50mA (driving a 40kHz ultrasonic
>transducer).  The battery would ideally last at least half an hour.
>
>* This project may occasionally be dropped, possibly from ~10 feet.
>It's not a disaster if a removable battery comes out at impact, but I'd
>hope it wouldn't be too damaged.
>
>* Preferably rechargeable, so I don't have to keep buying more
>batteries.  I'd be willing to build a simple charger (eg with an
>easy-to-use IC) for it.
>
>* Unless it's 5-6V (regulated down for the PIC), I'll need to work out
>how to boost it to drive the tansducer with ~10V peak-to-peak.
>
>Now that I write it down it sounds pretty difficult to achieve!  I'd
>appreciate any suggestions.
>
>Regards,
>
>Chris
>  
>


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