Home Forums Hunting & Shooting Backpack Hunting Piezo ignition - is it reliable in the mountains?

I used my JetBoil to heat water for lunch 2 or 3 times last year, between 10,500 and 11,500. One or two flicks of the Bic, and everything fires right off. Didn't even bother with the piezo. The piezo only works about 50% of the time sitting on my kitchen counter at 800 ASL. YMMV...