Originally Posted by
ItsJustMe
IMO, you should have two headlights anyway if you plan to ride at night, and if you do, it's best to have two similar ones with the same batteries so you don't have to have twice as many spare batteries and twice the chargers,
Why do you say have two? So you always have a back up, or for more light?
The 18650 is impressive. I remember back in the old days...OK like a few years ago, when that cell would have been crazy expensive.
Ok, now it's between these two:
R4 and
Q5
The Q5 wins major points for batter capacity, but the R4 is about 70 lumens brighter, and can use AA in a pinch, which is pretty convenient.