i have a few bikes with dyno hubs - SON, SP and Shimano, and a variety of lights- Trelock 885, E3 Pto and Edelux 2. I wanted to charge USB things, and was wondering to myself if I can save some coin by using a $1.88 double USB car/truck charger off eBay in parallel with one of my lights. Especially if it was with a switchable light and I used a socket so it was only plugged in when needed. The truck chargers can take at least up to 24v so that should help a bit. Tell me where I'm not thinking this through fully, and please comment on what would happen if both light and charger were used at once.
thanks, Andrew
thanks, Andrew