cold weather performance of lithiums in flashlights

[slide13]

Just wondering how the lithium batteries perform when cold. I was thinking a SF G2 would make a great Christmas gift for a few people, especially as a light to leave in the glovebox for those who don't want to carry a light with them everywhere. But, it's winter time here and I'm just wondering if they will perform when cold like that.

 

[dizos]

Lithiums perform at much colder temperatures than alkaline batteries.

-- Dizos

 

[Sid Post]

I'm a flashlight'oholic in training. When my modified 4-D cell Mag-lite is running in normal weather with good batteries, it is darn close to a light saber Add a lot of parking lot summer days or cold winter nights while away from the charger and it is dead

I recently bought a yellow SureFire G2 for the glovebox to fight to the heat and cold. 65 lumens is better then none

 

[Size15s]

I conditioned a Stealthlite with Duracell AA's and one with Energizer Lithium AA's for many hours in a -22C - 25C freezer room. The Lithium AA's significantly out performed the Alks in terms of output and runtime when compared inside the room. The SureFire 12PM ran like a dream when in a very cold air temperature - longer runtime before thermal shutdown. I believe it was 7-9 minutes, I'm not sure. A lot better than 3 minutes like normal.

Based on my informal testing several years ago I have no doubt that the Lithiums are better in a wider range of temperatures than Alks.

Al

 

[Peter Atwood]

Since mine are always in my pocket the cold has not been much of an issue. My latest toy, a custom Firefly from Doug Speck. I LOVE this little light!: