HYPERBOOM should last an average of 24 hours* of nominal music playtime. Playing at maximum volume should be in the range of three-plus hours.
*HYPERBOOM’s playtime is an estimate based on an average nominal volume level of approx 50%. (measured 75dBC @ 1 meter) Actual playtime will vary depending on the volume level, type of music played, the charge level of the battery, age of battery, and ambient temperature. Playing HYPERBOOM in PartyUp mode (connected to other Ultimate Ears speakers) can also reduce battery life.