Originally Posted by
PatrickGSR94
I personally don't like having to deal with external battery packs and wires and such. I wanted a bright "to see by" light with integrated battery and USB charging, and the Cygolite Expilion fits the bill. I picked up the 700 lumen model on Amazon right after Christmas for right around $100 or so (I think it may have been on sale).
It's been a great light so far. It uses an 18650 cell, which resides in a proprietary casing. That means you have to buy their battery if you want a spare, for around $30. But the cell is removable and you can swap out cells if need be.
That does seem like decent deal for a bike light. I still wonder why bike light companies still over charge for their lights and do not tell you if their ratings are ANSI, OTF/torch lumens or just emitter lumens. Heck, a lot of them just say water resistant, they won't even tell you their rating (i.e. IPx8
http://en.wikipedia.org/wiki/IP_Code )