If you play music at a moderate volume level, the battery in your Beoplay E8 provides up to 4 hours of playtime. A fully charged case gives 2 additional charges which means that you will have up to 3 charges (including the first charge) and the equivalent of up to 12 hours of playtime
In general, the battery life depends on the volume level, the intensity of the music as well as the equalizer settings. This means that the battery drains faster at a higher volume level and when playing higher intensity music like rock or heavy metal.
