Dear Bicycle Light Manufacturer,
This is to let you know that you have really missed the mark with your current offerings.
All over the world sophisticated cyclists are using flashlights exclusively or are supplementing their bicycle lighting needs with flashlights.
The reason? You continue to make unwieldy bicycle lights that are either under powered or unnecessarily heavy and complicated to mount.
The answer. Start making bicycle lights that benefit from the "18650" Lithium Ion cell format. Make these lights so that the cell is contained in the body of the light and can be "swapped out"or charged in place.
Offer an optional external battery pack for those who absolutely require it, but standardize plugs and voltages across you lights so that as emitters and new lights come to market past purchases will not become obsolete.
And finally, make the damn light - a bicycle light with reflector and beam pattern that works for a bicyclist. And while you're at it - offer a bicycle light that has a "real" high beam and low beam. Geeeee-zussssss - it's not rocket science!
That is all - continue with your own crop of crap at your own risk. I may go into this business.