Eyewear having selectively exposable feature

A method comprising:

• coupling a battery with a charging circuit;
• coupling the charging circuit to a connector that is configured to be selectively coupled to and decoupled from an external power source;
• mounting the battery, the charging circuit, and the connector to a portable case for an eyewear device, the connector interfacing a storage area for the eyewear device within the case;
• and
• coupling a connection port of the eyewear device with the connector.

A system including a wearable device, the system comprising:

• eyewear comprising a frame and a temple, the eyewear configured to carry electronics including a first connection port and a first battery;
• a case configured to receive the frame and the temple therein, the case including a second connection port configured to couple to the first connection port of the eyewear, the case configured to house a second battery that supplies a charge to the electronics carried by the eyewear including the first battery;
• and
• a charging cable having a connector that is compatible both with the first connection port of the eyewear and with the second connection port of the case.