Is this safe? (AAA Li in SL Microstream)

[Timothybil]

I am the proud owner of a couple of Streamlight Microstream lights. I use one for EDC, the other I have in my car for emergencies. I live in Iowa, where recently daytime temps have been 20F and nighttime around 5F. I would dearly love to put a AAA lithium in at least the light in my car, and I wouldn't mind putting one in my EDC as well. Streamlight states "alkaline only" since that is all they have tested. I believe since this is a regulated light with a voltage boost in place, that it SHOULD be ok to use a lithium primary, but I would hate to blow my light testing it.

Have any of you wonderful people put a lithium primary into a Microstream? If so, how did it work?

Thanks in advance.

 

[this_is_nascar]

I have (3) of these on the way and I'll be trying Energizer E2 Lithiums in them.

 

[Wolf]

A single AAA E2 LI in the microstream shouldnt hurt it, I stuck the microstream head on my stylus pro (2xAAA) and it worked fine, seems to me that the microstream and stylus pro share the same parts sans the battery tube.