So there's a thing you can strap to yourself that keeps your vive controllers (or index or whatever) charging as you play? can anyone point to me to the recommended one? I mean I have a battery bank but 1. it's too bulky to strap it on me 2. have no way to strap it and 3. it only has one output so I could only charge one controller. The vive wands use micro usb idk if index is usb-c for theirs, but I would need it compatible with vive.

I'd be really interested in this as my wands die in like 4 hours