Let's see...that is equivalent to having a visible headlight on for approximately how long?
I would buy it. Just not yet. Very cool idea. Do you have the Faraday-effect flashlight?
Same principle. Shake it and it stays lit for a rather long time before it starts to get dim.
The dirty little secret is that they usually put batteries in the flashlights. Crank radios also.
You're right about the Faraday flashlights and batteries. I actually met a guy who invented and sold an American-made Faraday light a number of years ago. His didn't use a battery, but he showed me a couple of overseas knock-offs that did. He was losing a lot of sales because the fakes were "brighter and didn't need as much shaking." The real thing was pretty cool through.
Agreed that the Brother batteries aren't there yet. Maybe never will be. But I just thought that it was cool that somebody was working on "shake-a-charge" batteries because they would be SO great for mountain biking if they are ever perfected!
