Hi Tony - Some typical manufacturer's claims:

Lithium     1200 mah
Alkaline     580 mah
NiMH         150 mah
NiCd         100 mah

Graph supplied by the Li vendor shows 63 hours
discharge to 7V @ 16 ma, 21 deg C.

regards, Jack

Tony Nixon wrote:

> Has anyone got a rough idea on a 9V battery life when the circuit draws
> about 16mA...

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu