Hello all. I'm looking at getting the Jetbeam PA10. I had a question about flashlight drivers. The Jetbeam website states that it has a 650 ANSI lumen rating when using a 14500 li-ion battery. The xm-l would have to be driven at about 2 amps to achieve that brightness. All the 14500 batteries are about 900ma which would be good for about 350 lumens. Am I missing something or does the driver boost the batteries output? Has anyone bought one of these lights yet? Thanks.