Samsung S4 spare battery cover

thingiverse

I always carry an extra battery with me, tucked away safely in my pocket. I seal my contacts with a small piece of tape to keep them secure. This is a more refined solution than you might find elsewhere. The print has a snug fit and won't fall off easily. Engineered to be printed using a 0.6mm nozzle, the design boasts walls that are 2x0.72 mm thick. If you prefer to use a 0.4mm nozzle instead, you can manually set the track width to 0.48, resulting in three sturdy outside walls. The layer height for this print is precisely 0.2mm.