I am putting together a bicycle generator and I am wondering if it is
possible to store energy produced to without batteries. i have seen
the shake/crank flashlights and lanterns that will run for 15-20
minutes after a charge. It seem that some of these have batteries,
but others do not. I have a bike, a car alternator, and a voltage
regulator for solar panels. Do I have to use batteries, or can I use
something else (such as a compactor) to hold power. I am just trying
to get some LED lights to run after 1-5 minutes of pedal power for 20+
minutes. If anyone can offer advise or send me a link where I can
find info I would appreciate it.