I was just browsing the Dinotte Lighting website and they have just released a new headlight the 1200L - 1200 Lumens - ouch! Their 800L light is pretty bright as it is, I can't imagine 1200 Lumens. According to the website, it has only a 2 hour burn time (30 minutes less thatn 800L on high), which I am assuming is on high. I think at this point Dinotte is gooing to have to develop a 6 cell battery. I would imagine this would appeal mostly to MTBers, and many of us ride more than 2 hours at night.