Why won't my mouse charge via the USB-C cable, and how do I fix it?

Why won't my mouse charge via the USB-C cable, and how do I fix it?

If it won't charge, check in order:

  1. Replace with a known-good USB-C cable and power source;
  2. Check the charging port for dust or debris;
  3. Try a different USB port or charger. If it still won't charge, please contact warranty repair.

(During normal charging, the front light breathes blue, and stays solid blue when full; the red light flashing 5 times indicates a charging error.)