We first spotted these guys a couple years back when they were showing off the first prototypes, which had a hardwired connection at the base of the Sinewave Reactor USB charger top cap. Now, they’re in full production and have made a few mods to make them more user friendly.
The Reactor is a sealed USB port that connects to a dynamo hub to charge anything that’ll pull power through a USB cable, and it’s conveniently located on the bike’s steerer tube. The main change is a snap connector at the base that allows the top cap to be removed without having to pull wires all the way up from the hub…
Two ports on the bottom are tight enough to hold the wires in place, but not overly snug such that they tug at the electronics inside when the cables are removed.
With a little excess coil bundled up between the expansion wedge and the Reactor, the cables aren’t going to fall out.
The other benefit of having a plug ‘n’ play system is that you can split the cable at the top to fit between the star wedge rather than having to split it all the way from the bottom.
Three colors are available.
They also make the Revolution charger, which offers the same electronics but can be placed inside a pannier/handlebar bag or strapped elsewhere on the frame. Retail is $220 for the Reactor and $120 for the Revolution.
