Charging the speaker from an AC outlet
The speaker contains a rechargeable lithium ion battery which should be charged before using the speaker for the first time.
- Make sure that the speaker is turned off.
- Connect the micro-USB cable (supplied) to the speaker, then connect the other end to a USB AC adaptor (not supplied).
- Plug the USB AC adaptor to an AC outlet.
The CHARGE indicator lights up in orange while charging. The estimated charging time depends on the power output capacity of the connected USB AC adaptor. For details on your USB AC adaptor’s power output, refer to the operating instructions supplied with your USB AC adaptor. The time stated below may vary depending on the ambient temperature or conditions of use.
- It would take about four hours*1 if the connected USB AC adaptor has ability to output in 1.5 A.
- It would take about eight hours*1 if the connected USB AC adaptor has ability to output in 500 mA.
The CHARGE indicator will turn off when charging has ended.
If the CHARGE indicator stays turned off when the speaker power is off and connected to an AC outlet, the built-in lithium ion battery is fully charged. Once the battery is fully charged, it will not be charged furthermore even if the speaker is kept connected to an AC outlet.*1Time that is required to charge the empty battery to its full capacity.
Battery life (when using the BLUETOOTH connection)
About 12 hours*2.
The time stated above may vary depending on the ambient temperature or conditions of use.
*2The method of estimating the battery life has been changed since 2015.
When the battery is running low
- When the CHARGE indicator flashes slowly in orange, the battery is running low and needs to be charged.
- If the CHARGE indicator flashes three times in orange and turns off when you turn on the speaker, the battery is empty and needs to be charged.
Hint
- A speaker that is in use can be charged if it is connected to an AC outlet, though the CHARGE indicator does not light up. In this case, it may take longer to charge the battery than when the speaker is turned off depending on the conditions of use. Therefore, it is recommended to turn off the speaker when charging.
- A commercially-available USB AC adaptor with a power output of 1.5 A or more is recommended for use, though a USB AC adaptor with a power output of more than 500 mA, but less than 1.5 A is also compatible with the speaker. Charging using other types of adaptors is not covered by the warranty.
- When you use the speaker at a loud volume, the battery may run low even if the speaker is connected to an AC outlet. If you want to use the speaker while charging, lower the volume of the speaker. Otherwise, turn off the speaker and charge the battery to its full capacity.
- When you use the speaker at a loud volume for a long time, the battery may run low even if the speaker is connected to an AC outlet. As a result, sound becomes low. This is not a malfunction. Turn off the speaker and charge the battery to its full capacity.
Note
- In an extremely cold or hot environment, charging stops for safety. If charging takes a long time, it also makes charging of the speaker stop. In these conditions, the CHARGE indicator keeps flashing in orange quickly, but this is not a malfunction. To resolve these issues, unplug the micro-USB cable and plug it in again within the operating temperature of between 5 °C and 35 °C (41 °F and 95 °F).
- Even if you do not intend to use the speaker for a long time, charge the battery to its full capacity once every six months to maintain its performance.