Press the Power Button once then release. The Power LED will turn off briefly, and then flash in a repeating pattern to indicate the battery status. In addition to the flashing lights, a voice prompt will tell you your battery power level.
Tip: Because the volume control buttons of The Blaster do not control the volume output of your music device, you must properly adjust the volume settings of each device independently.
Tip: You can also see the battery in the Status Bar of Apple iOS devices when connected via Bluetooth®.
When the battery is low, the Power LED will change from red to yellow while powered on.
Tip: The Battery Check function is most accurate when music playback is stopped.