Originally Posted by
ItsJustMe
I bought that light and returned it the following day. The light from it was adequate, though I don't think so for 30+ MPH. My big gripe was that it uses NiMH batteries which are hopeless in cold temps. Mine died at 20 minutes into an hour long ride at -15*F. Luckily I still had my cheap Chinese clone with LiIon cells mounted, it had no trouble taking me the rest of the way in to work AND home again.
I guess everyone's eyesight and abilities are different. I have ridden thousands of miles in the dark with that light on low and find it to be perfectly adequate. I've also decended at 40+ mph on high with no problem. I agree with the cold weather limitations.