Fem - User guide - Battery levels and management

Fem has three built-in batteries; one inside the charging case and one in each earbud. The battery inside the case is used to charge the earbuds, while the included USB Type-C cable is used to charge the case.

⚠️  Sudio Fem is delivered with a protective film covering the charging connectors between the earbuds and charging case. The film needs to be removed in order for the earbuds to charge.

Charging and play times

The earbuds can be used for approximately 6 hours on one charge, with up to 20 hours in total before the case needs to be recharged.

Each battery takes approximately 60 minutes to fully charge. Also 15 minutes of charging gives 1 hour of playtime.

Charging methods

The Fem case can be charged with a USB Type-C cable, wireless charging is not supported. We recommend using the Sudio cable included in the package, however, other third-party USB Type-C cables may be compatible too.

Battery level indicators

There are four LED lights inside of the charging case.

The LED lights in the charging case indicate the remaining battery level of the charging case. The LED lights will be on when you take out the earbuds or put them back into the charging case.

  • 100%: All four lights are on
  • 75%: Three white lights are on
  • 50%: Two lights are on
  • 25%: One light is on

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Charging the earphones in the charging case:

  • If the LED lights on the earbuds shows white and is blinking, it means the earbuds are currently charging.

You can check the remaining battery of the Fem earbuds on your mobile device.
For iOS devices, you are able to see the battery icon on the top right side of the screen.
For Android devices, you are able to see the battery icon on the screen.

There's also a variety of third-party apps for battery management available in Google Play Store.

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