IMPORTANT: This article applies only to specific products and/or operating systems. Check the Applicable Products and Categories section of this article before starting these steps.
Please check the following and see if the condition improves.
Set the headphones in the charging case and close the lid.
Insert both sides of the headphones into the charging case connected with the USB cable, then check that the headphones indicator (red) lights up. If the indicator does not light up, close the lid and wait about 30 seconds. Then open the lid and check that the indicator (red) on the headphones is lit.
Check that the earbuds or arc supporters (only available for the WF-SP800N) are attached properly to the headphones.
If they are not attached properly, the headphones may not be charged with the charging case. Check the attaching conditions before setting the headphones in the charging case.
When attaching the earbuds:
Be sure to firmly insert the earbuds all the way. Do not attach the earbuds in a loose or skewed manner.
NOTE: The image below is an example of WF-H800.
When attaching the arc supporters (only available for the WF-SP800N):
Align the protruding part of the headset with the recessed part of the arc supporter (align A illustrated in the image), and firmly insert the arc supporter all the way. Do not attach the arc supporter in a loose or skewed manner.
Charge the headphones using the supplied earbuds attached.
If you are using other than Sony branded earbuds, the headphones may not be charged with the charging case.
Charge the charging case with the supplied USB Type-C cable.
The remaining charge of the rechargeable battery of the charging case may be low. If this is the case, the rechargeable battery level of the charging case is low, and the headphones cannot be charged.
When the headphones' indicator (red) lights up and immediately turns off, and the headphones power turns off when the headphones are set to the charging case.
When the headphones' indicator (red) doesn’t light up on and the headphones power doesn’t turn off even if the headphones are set to the charging case.
NOTE: Do not use a commercially available charging cable, or the headphones may not charge.
Wipe the terminal of the headphones and charging case with a dry soft cloth (such as those for commercial glasses).
A dirty terminal may not make charging possible. It is recommended that you clean it regularly.
Charge in an environment at 5°C - 35°C (41°F - 95°F).
Charging may not be possible if the temperature is too low or high, .