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In article , Bill Daniels
writes
I have an EDS on order and have been reading the manual available from their
web site. It says "USE 9V ALKALINE BATTERY ONLY" in caps for emphasis.
They then go on to say that you can also use and external battery of any
type you choose.

OK, so what would be wrong with using a 9V lithium smoke detector battery
that lasts 5 times longer than an alkaline? I use one of these as a backup
on my Borgelt B40 and I've never had to replace it.

Yep, I'm gonna ask Mountain High too.

Bill Daniels

This seems to me to be more of a warning not to use Zinc Chloride
batteries as these have a lower capacity and higher internal resistance.

Tim Newport-Peace

"Indecision is the Key to Flexibility."