The expected battery life of the VE-22 under continuous use with alkaline batteries (AA, LR6) x 4 is approximately 6 to 9 hours. If the batteries drain faster than expected, please check that you are using alkaline batteries, as other battery types are not supported. For extended continuous use, we recommend powering the unit with an AC adaptor (BOSS PSA-S series, sold separately).
Note: Actual battery life may vary depending on battery specifications, capacity, and conditions of use.