Now that the clocks have gone back and it’s getting darker earlier I was getting fed up (and forgetting) to charge up my lights, so I have invested in a new front light that works from the bike battery. I have it fitted to my Levo and it plugs directly into the motor with a cable from a company called lupine, which I just soldered to the light cable, cables available for other models as well.
https://ride.lezyne.com/products/1-led-emacr-v104s
https://ride.lezyne.com/products/1-led-emacr-v104s