Charging the battery | Bose S1 Pro+ Portable Bluetooth® Speaker System

Charging the system battery

To charge the system battery, connect the system to power.

If the system is powered off, the power light pulses white to indicate the system battery is charging.
When the battery is fully charged, the power light turns off
If the system is powered on,Â a lightning bolt icon will appear on the Channel 3 displayÂ next to the battery icon to indicate the system battery is charging
When the battery is fully charged, the lightning bolt icon disappears

CAUTION: Do NOT attempt to charge the system while it is wet. Doing so may cause damage to the system.

System charging time
Allow up to 4 hours to fully charge the system battery. With typical usage, the battery lasts up to 11 hours. Battery performance and charging time varies with the content played and volume at which itâ€™s played.
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Additional battery maintenance

Charge your system battery fully before each use for optimum performance
For storage and long battery life, removeÂ the systemÂ battery,Â deplete the battery to less than 50%, and then charge the battery before your next usage. It's best to use the battery at least once a year.
For long term storage (over a year) charge your battery fully before storing it, and make sure to fully charge it at least onceÂ every year

Charging a wireless transmitter

Using the charging ports

Fully insert the wireless transmitter into the wireless transmitter charging port for either Channel 1 or 2 until you hear or feel a click.

If the system is powered on, a battery icon with a lightning bolt will appear brieflyÂ next to the channel displayÂ to indicate the transmitter battery is charging. A lightning bolt icon then appears in the upper-right corner of the display.

When the transmitter is fully charged, the lightning bolt icon disappears.

NOTE: If the system is connected to power, the AC (mains) power connection charges the transmitter. If the system is operating on battery power, the system battery charges the transmitter, unless the system battery chargeÂ isÂ less thanÂ 35%.

Using a wall charger or computer

NOTE: Use this product only with an agency-approved LPS power supply that meets local regulatory requirements (e.g., UL, CSA, VDE, CCC).

Connect one end of a USB-C cable (not provided) to the USB-C port on the top of the wireless transmitter.
Connect the other end to a USB-A wall charger or computer. The power light glows solid white. When the transmitter is fully charged, the power light turns off.

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Wireless transmitter charging time
Allow up to 2 hours to fully charge the wireless transmitter battery. With typical usage, the battery lasts up to 5 hours.
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Wireless transmitter auto-off
If signal is below 10% for 15-30 minutes, the transmitter will go intoÂ standby mode. After 30 minutesÂ of no operation, the transmitter willÂ turn off.

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