What to do with 9V Lithium Batteries?

those are nice.
there is also that simple 2led 2 level clip on thing for 9Vs. dont know if it will do lithiums.
i thought it was the li-ION rechargable 9Vs that were the "different" size not the lithiums that many people use in smoke alarms.
if its li-ION rechargable type ones, they max at 8.4volts.

make one of these easy
http://www.sentman.com/led/clip9v/
http://flashlightsunlimited.com/safelight.htm

didnt the CPF special safelite use 9volt battery?
 
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