ReGen simply isn't worth the weight and extra mechanical parts on a bike. To be an efficient cyclist who thinks about battery life you don't use the brakes as much. You coast to a stop etc. Any long hill ridden up should be ridden down with minimal braking if any at all.
Obviously no braking at a red light at the bottom of a hill isnt what i mean here but if you brake a lot, your killing your battery.
Obviously no braking at a red light at the bottom of a hill isnt what i mean here but if you brake a lot, your killing your battery.