A bit hard to find. Mine actually came with a wireless charger/magnetic car vent holder.

Picture: https://m.media-amazon.com/images/S/aplus-media/sc/4b84c884-8adf-4ee2-b0ce-bc99e79d9933.__CR0,0,970,600_PT0_SX970_V1___.jpg

Amazon: https://www.amazon.com/Wireless-Dashboard-Magnetic-Rotation-Compatible/dp/B06VY97JD2/ref=sr_1_1?keywords=wireless+charging+metal+magnetic+u+shaped&qid=1572628463&s=electronics&sr=1-1