A car driver stopped me today to ask about my bike lights. I ride with them on in daylight to improve visibility and avoid those SMIDSY moments. He was most impressed (no, really), and asked what they were and where I got them.
Here's a picture of the lights in action
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The one on the left is an
Ultrafire 502b, it has an XM-L U2 led emitter, which is apparently the most
efficient currently available. It runs on one 18650 Li-ion cell. It
probably puts out around 400 lumens (just a guess). I got this just a
few weeks ago from here. The one on the right is a Fenix L2D Q5, it runs on 2AA NiMH cells, it is rated at 190 lumens, I got it from here several years ago. The Ultrafire plus cells plus charger cost about £23. You can pick up the same light with an XM-L T6 (almost as efficient as the U2) for about £11 on eBay from UK sellers.
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