A single BATTERYBOKS 2 will keep the SOUNDBOKS playing on full blast for approximately 8 hours which will reach sound pressure levels as high as 122dB.
The average battery life of the SOUNDBOKS is approximately 40 hours, which includes playing at both low, medium and maximum volume. This will typically be enough for a whole weekend on a cabin trip, festival, etc.
The SOUNDBOKS 2 does not use a fixed amount of power, but uses more power when you turn up the volume or play aggressive house/dance music with a lot of bass. Therefore the battery life in hours may vary from time to time, depending on the music you play and how loud you play it. For instance, if you only play music below half of maximum volume, you can expect up to 100 hours of battery life. And for the record, half of maximum volume is pretty damn loud.