Power Bank and Light compatible with RYOBI USB Lithium (remix)

Use your Ryobi TEK4 (AP4001) or USB Lithium (FVB01) batteries as a USB power bank and emergency flashlight.

This is based off Simple3D's design but modified to accept the older TEK4 batteries too, and adjusted the cover to hold the button and line up with the LEDs better.  You should get the .stl file for the pushbutton from his model page, and follow assembly instructions found there.