Wireless charging for headphones

A headphone device comprising:

• a first earpiece comprising:
• a first earpiece housing,
• a first speaker in the first earpiece housing configured to produce audio,
• a first cable segment configured to form a first loop that extends outward from the first earpiece housing, and
• a first wireless charging coil having (i) a portion that extends through the first loop outside the first earpiece housing and (ii) a portion that extends within the first earpiece housing;
• a second earpiece comprising:
• a second earpiece housing,
• a second speaker in the second earpiece housing configured to produce audio,
• a second cable segment configured to form a second loop that extends outward from the second earpiece housing, and
• a second wireless charging coil having (i) a portion that extends through the second loop outside the second earpiece housing and (ii) a portion that extends within the second housing;
• at least one battery configured to power the headphone device;
• and
• a battery charging circuit coupled to the wireless charging coils, the charging circuit being configured to charge the at least one battery based on electrical current induced in the wireless charging coils.

A method comprising:

• receiving, at an earpiece of a headphone device, magnetic fields of a wireless charger that induce a current in a wireless charging coil integrated with the earpiece, the wireless charging coil extending partially within a housing of the earpiece and partially outside the housing of the earpiece;
• processing the current induced through the wireless charging coil with a battery charging circuit of the headphone device;
• and
• charging a battery of the headphone device using output of the battery charging circuit.