Samsung EO-SG928 User Manual page 6

Getting started
Charging the battery
Before using the Bluetooth speaker for the first time or when the battery has been unused for
extended periods, you must charge the battery.
Use only Samsung-approved chargers (5 V/2 A or higher) and cables. Unapproved
chargers or cables can cause the battery to explode or damage the Bluetooth speaker.
If the battery is completely discharged, the Bluetooth speaker cannot be turned on
immediately when the charger is connected. Allow a depleted battery to charge for a
few minutes before turning on the Bluetooth speaker.
Connect the Bluetooth speaker to the USB power adaptor via the USB cable. Plug the USB
power adaptor into an electric socket.
Connecting the charger improperly may cause serious damage to the Bluetooth
speaker. Any damage caused by misuse is not covered by the warranty.
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