A compact case for storing and transporting 4 × 18650 batteries.

Required hardware:

• 10 × magnets

• Magnet size: 10 mm diameter × 1.75 mm thick

The magnet pockets are intentionally designed for a tight press fit. Even so, it's recommended to add a small dab of glue to each magnet for extra security.

Be sure to press each magnet all the way to the bottom of its pocket so the two halves close flush.
Important: Check the polarity of each magnet before gluing it into its pocket. Once installed, all magnets should align correctly so the two halves attract rather than repel.