Safety issues regarding Li-ion and high powered incan

[monkeyboy]

I'm just wondering if anyone running e.g. WA01185 or something more powerful with li-ion has experienced problems with batteries overheating? For example PTC cutting in or even worse

It just occurred to me that the light will get very hot if left to run continuously and li-ion doesn't like to run hot.

 

[Evil Twin]

My Mag85 runs 3 C sized (AW) Li-ions. Never had any problem with them venting. The only issue I ever had with the PTC, was when I was using the light as a strobe and it just stopped working all of a sudden. I let it sit for about 30 seconds and then it worked just fine again.

As far as the heat build-up, it seems to be mainly in the head and right around the neck of the light. Not that much heat travels all the way down the body of the light, so I don't think the batteries really get exposed to too much heat.

 

[monkeyboy]

Thanks for the reply evil twin. Now I'm wondering if this would be a problem in a cut-down mag mod (with tail switch) where the batteries were much closer to the head?