Ever been out on your electric skateboard and run out of controller or phone juice!? I have and it's really annoying knowing you've got a massive battery inside your skateboard but unable to harness it's power to charge your phone!
Fear not! I have a non-invasive solution!
These voltage step-down converters coupled with these DC 5.5/2.1 jacks are a perfect solution for charging from your electric skateboard on the go...