> Charging


When using a commercially available USB conversion AC adapter, make sure to choose one with an output voltage of DC 5 V and output current of 1 A and above. Otherwise, it may result in malfunction or abnormal heating.

Use only the supplied charging cable to charge the System.

Do not use this System while charging is in progress as the rechargeable battery may become hot.

Using the supplied charging cable, connect the System and a commercially available USB conversion adapter.

1Connect the charging cable provided to start charging.

Insert the USB AC adapter into the AC outlet to start charging.

charging 2 No-PC charge S48BT + Charge 2 S48BT


The indicator lights up in red, and charging starts.

The charging time is approx. 3 hours. When charging is complete, the indicator goes out.


The System cannot be charged when the temperature protection function is in operation. In that case, perform charging within the usage temperature range (5 °C (41 °F) to 40 °C (104 °F)).