So I have some things else to add to the wireless discussion (I may make a separate post about this later after I gather more information and observe our setup)
HTC does not sell extra USB A to A cables for the battery to wireless adapters, all 4 of ours broke in under 3 months.
HTC said I should be able to just get extra cables from most tech stores, but they are a non-standard cable. They claim this will not affect the warranty ( at least the advantage+ that we have )
Some of the USB 3.0 variants of the aftermarket cables may have damaged multiple ( 10 ) of our battery packs. (They won't turn on an HMD or even charge a smart phone, but will run something like a USB desk fan, it appears the QC 3.0 circuitry has failed). I switched to simpler USB 2.0 Male A to Male A style cables since that is actually closer to the original HTC cable and so far the battery pack deaths have ceased. HTC is warrantying the batteries, but it's ground shipping.
Battery packs last 2 - 3 hours tops. You can buy spares from HTC for $70 or you can get Anker QC 3.0 packs for about half that price that last just as long. I would not go with anything cheap or off branded.