Get the 3amp stator and flywheel to make them work, or a battery. Here's the stator itself, then you'll need the regulator/rectifier (turns A/C ro D/C and regulates to around 12 volts) and the flywheel for it. https://www.nrracing.com/category-s/1836.htm
As this come up frequantly... a good battery is about the best way.....
The charging effort isnt worth the money,convenience and overall inefficiency .....
Keep the battery charged Via the wall charger... itll be fine...
I agree too. LEDs are awesome and insanely bright for how little juice they use. I wish it were that easy when I was a kid you should of seen my light rig on my old xr100 dirtbike lol.