Sony WH-1000XM4 Help Guide - Page 18

Help Guide Wireless Noise Canceling Stereo Headset WH-1000XM4 Charging the headset The headset contains a built-in lithium-ion rechargeable battery. Use the supplied USB Type-C cable to charge the headset before use. 1 Connect the headset to an AC outlet. Use the supplied USB Type-C cable and a commercially available USB AC adaptor. The charging indicator (red) of the headset lights up. Charging is completed in about 3 hours (*) and the indicator turns off automatically. * Time required for charging the empty battery to its full capacity. The charging time may differ depending on the conditions of use. After charging is complete, disconnect the USB Type-C cable. System requirements for battery charge using USB USB AC adaptor A commercially available USB AC adaptor capable of supplying an output current of 1.5 A or more (If the output current is less than 1.5 A, the charging time will increase, and the music playback time after 10 minutes of charging will decrease.) Personal computer Personal computer with a standard USB port We do not guarantee operation on all computers. Operations using a custom-built or homebuilt computer are not guaranteed. Hint The headset can be also charged by connecting the headset to a running computer using the supplied USB Type-C cable. If charging starts while the headset is on, the headset will turn off automatically. Note Charging may not be successful with cables other than the supplied USB Type-C cable. Charging may not be successful depending on the type of USB AC adaptor. 18