The Dynavox DBT600 can be operated both stationary with a mains adapter and with an integrated rechargeable battery. The battery offers a runtime of around four hours, depending on the volume and display brightness. If the device only shows the clock at night and plays the radio for about half an hour in the morning, the battery could last through the night. However, it is advisable to charge the device during the day to ensure that it lasts through the next day.