A fully charged S9 battery provides approximately: Up to 6 hours of stereo music listening/ 7 hours of phone call talk time. Up to 150 hours of standby time. Your S9 powers off after one hour if not in use (no audio or control activity).
People also ask
How long should a Bluetooth headset charge?
How to charge S9 wireless headphones?
The more you use your S9 with your Bluetooth devices, the less standby time your battery has. The rechargeable batteries that power your S9 must be disposed of.
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It was easy to set up, use, and has very good battery life. I have used it as a hands free phone headset, and it has good audio clarity both speaking and ...
Use your S9 with a fully charged battery. Before you use your S9, charge its self-contained battery for two hours. When the S9's indicator light flashes red, ...