5. BEATBOX battery and charging instructions

Battery Capacity

3350mAh

Battery life

CD Mode: Headphone: 8h+ | Speaker: 8h+

USB Mode: Headphone: 15h | Speaker: 15h

Bluetooth Mode: Headphone: 26h | Speaker: 17h

AUX Line Mode: Headphone: 15h | Speaker: 15h

FM Radio Mode: Headphone: 16h | Speaker: 9h

Note: The unit can operate solely via external power supply with the battery removed.

Charging

This device uses a replaceable 3.7V 18650 lithium battery; the original factory battery is recommended. Observe positive/negative polarity during replacement and avoid short-circuiting the battery terminals.

Use a 5V 1–2A compatible power adapter. Connect a USB cable to the POWER IN port; a red indicator light confirms active charging.