I've uploaded a design that I created for my quadcopter/drone to YouMagine, a 3D-file-sharing site. The design is a label that I attach to my quadcopter batteries to tell me that they are charged. It is in the shape of a lightning bolt and has raised text on the top that reads “Charged.” Feel free to download it and use it yourself!
You can visit the post through this link (https://www.youmagine.com/designs/charged-label-for-batteries).
