Finally got the Battery / Charger Wall put together for my Garage Metalshop. Yeah there are 12V, 20V, 40V and Flexvolt up there, I got suckered into the yard tools 4 years
DIY Drill Charging Station - The Home Depot
New Dewalt ToughSystem Charger with Dual Battery Ports, USB, Storage
23 Easy DIY Battery Charging Station Plans
DIY Drill Charging Station-id#393281- by Budget101.com