When your iPod/ iPhone is connected to the USB port, charging automatically begins.
Charging is possible even when the speaker is turned off.
- For SRS-X9/ X99 and SRS-BTD70 :
Only the USB A port supports charging. It may be necessary for the supplied power cord to be plugged into a wall outlet.
- If the speaker is being powered by the built-in battery only, the connected USB device can be charged only when the speaker is turned on.