Surefire 123 Thermal Shutdown?

Lumenous · Sep 7, 2004

I was experiencing thermal shutdown with a Surefire M2 flashlight. Speaking with the friendly folks at Surefire they mentioned that thermal shutdown is normal when one uses SF123 batteries. So I thought a Special Ops light experiences thermal shutdown? A SPECIAL OPS LIGHT? /ubbthreads/images/graemlins/thinking.gif /ubbthreads/images/graemlins/icon3.gif

Sean · Sep 7, 2004

I thought only the M4 with N62 experienced thermal shutdown. /ubbthreads/images/graemlins/huh2.gif

kitelights · Sep 7, 2004

As I understand it, the batteries have an internal thermal cutoff. I think that it's true of most lithiium cells. The Energizer AA and AAA has it.

Size15's · Sep 8, 2004

The only lights I've ever experience Thermal Shutdown with are the 12PM with N62 and the M4 with N62.

I've heard it can happen with the M2 or G2 but I've never managed to replicate this myself. I guess the air temperature isn't high enough?

What are the conditions / usage that you experienced thermal shutdown with an M2?

Thanks

Al

Surefire 123 Thermal Shutdown?

Lumenous

Newly Enlightened

Sean

Flashlight Enthusiast

kitelights

Flashlight Enthusiast

Size15's

Flashaholic

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