The advertised battery life of soundcore C50i is based on 7 hours of continuous music playback at 50% volume using the default sound effects (Bass Boost Mode). With the charging case, this provides a total of up to 28 hours of playtime (7 hours + 21 hours).

If your earbuds seem to drain quickly or their battery life appears shorter than expected, it may be due to one or more of the following reasons:

1. Battery life depends on the audio type and playback volume; higher volume results in shorter battery life.

2. The earbuds require continuous use of the mic during calls, which can shorten battery life.

3. The LDAC codec consumes more power, which can shorten battery life. Try switching to other codecs (AAC or SBC).

4. Activating additional features in the app, such as EQ or dual connection, can reduce actual usage time.

5. The battery health of electronic devices degrades over time, shortening battery life. To slow battery degradation, avoid charging the earbuds and charging case until the battery level is around 20% or until the device shuts down due to low battery. Always charge the earbuds and charging case at least once a month to prevent over-discharge.

If you encounter any other issues or your issue has not been resolved, please contact us for further assistance.