Leaky batteries is an issue but I think the most common mode of failure in LED lights is heat which causes the driver to fail and soldering to come loose.
To elaborate further, no of lumens goes up to a peak then taper off gradually as we gained more experience here on CPF as our focus shifted from raw power (lumen output) to endurance (runtime).
Hi P_A_S_1,
On reactivity, carbon knives are generally more reactive to food than stainless steel knives. Good quality mono steel carbon knives while still reactive (forming patina) to certain food but it won't affect the taste of the food. Pro sushi chefs use carbon knives because of its...
Leon,
I love you man! Brutal but true. I can't even write a single paragraph no matter how good a brand or how much I love a brand. It really amaze me people can sit down and write 1000 words to dish a brand. :thinking:
Surefire C2/3, Z2/3, 6/9P, M2, M3, M4 all have double o-ring grooves at the tail not a larger gap that can accommodate two o-rings, stock lights came with one o-ring but many CPFers put in another o-ring in the second groove.