re: too expensive

I paid $180 for a PrincetonTec SwitchBack 2. Battery died within one year (in the middle of a 2 hour night ride, thanks...), new battery cost me $110. I bought a SRAM dyno/disc hub for $80, a SuperNova E3 now costs $160 (I paid $220). My new set-up cost the same as a nice battery powered set-up and ALWAYS works. I've got two other night bikes, time to do some DIY LED headlights.