What about charging the charger?
The Eargo charger is portable, and you can use it to charge your Eargo devices on the go. What we mean is the charger runs on its own internal rechargeable battery. The charger will hold a charge for about a week while charging your Eargo devices every day.
To recharge your charger, simply put it on the [plugged in] charging base or plug in the [plugged in] micro USB cord. It’ll take about 6 hours to charge up fully. A full charge will give you up to 16 hours of use.
While charging the charger, the Eargo devices will also charge [if they are in the charger].
Keywords: charger, charge, charging
Source: Charger Guide
User Guide Part #: LBL0025 Revision: REV_A