Rank: Uber Flinger
Joined: 11/30/2007
Posts: 158
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GodaiNoBaka wrote:liammc wrote:GodaiNoBaka wrote:andyw77 wrote:I would imagine that any light like this would NEED to have batteries to store a charge generated from shaking it. Without a battery or a large capacitor, any current generated by your shaking would be used up immediately and to keep the light going as you walked you would have to keep shaking it, a mighty inconvenient way to light a path. Exactly. I don't think you'd need a particularly LARGE capacitor, since we're talking LEDs here, but you need one or the other to store the energy generated by shaking. That said, I bought a bunch of these from TF last year, and got some in a MB later on as well. They do work as advertised, but you should be aware that a) these are not high-brightness LEDs, which are the type used in most LED flashlights. As a result, they generate much less light than you may be used to seeing in other LED flashlights. b) It takes a lot of shaking to get the battery/cap charged enough to light the way for more than a few seconds c) The lens in front of the LED is thicker than necessary and so scratched up as to be nearly translucent. As a result, not all of the light that is generated gets out. I took a hacksaw and chopped off the lens and the result was better, but still not wonderfl. Not in the same class as the ones they sell on the front counter at MicroCenter. In all honesty, I would classify these as toys rather than serious emergency light sources. Just a note to your c) I agree the lens is a plastic magnifier, But no need to use any tools to remove. I just unscrewed the top. It plops right out. Must have been a different model or a different batch. The ones I have, the lens is affixed firmly to the front of the flashlight. You couldn't pop it out or pry it off. In fact, I would like to say that it had been molded as one piece with the body of the flashlight, but it may just have been glued. I must have, Because today my order arrived similar to what you were refering. I only opened 1 ( one ) and it seems to be a real shake light. No batteries contained that I can see, Just a lil' old capacitor. Lens is affixed. True magnet, I tested the polarity using some strong earth magnets. Going to open a help desk ticket as once again NEW fedex delivery person left my box on the sidewalk. Wet and missing a few.  
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