At the risk of trading in national stereotypes, pretty much all you need to know about the efficiency of the Magtenlight is that it comes from Germany, the most efficient country in the world (except for, ironically, the inefficient capital Berlin). This efficiency seems to carry over to magnet-powered bicycle lamps.
The Magtenlight works like the Reelight, which we have previously covered. Instead of batteries or a dynamo, the lights both use spoke-mounted magnets which generate electricity as they pass the lamps themselves. Unlike the Reelight, the Magtenlight actually looks bright enough, and instead of sitting down on the hub where it is hard to see, the LED part of the Magtenlight is connected by a cable and can be clamped up high.
The extra brightness comes from having enough magnets. While the Reelight comes with a stingy two per wheel, the Magtenlight has 32. These are distributed across four segments which form a complete ring, giving constant power. Magtenlight says the lights give out 15 Lux. The Reelight site gives no rating, but a peek at the Magtenlight video tells us that these lights are way brighter than the Reelights I have on my bike.
A full set of front and back lights isn’t cheap at $86, but you’ll never have to buy batteries, or even recharge them, ever again.
Product page [Magtenlight. Thanks, Michael!]
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