The OnePlus Bluetooth ear case usually needs to be charged for about 1.5 to 2 hours to be fully charged. Charging times may vary depending on usage and battery capacity. It is recommended to check the product manual before use for accurate charging times. Charging time long enough ensures that the earcase battery is fully charged in order to provide a stable power supply, allowing you to enjoy a longer battery life during use.
The charging case of the Bluetooth headset can be fully charged for about two and a half hours.
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2. Because Bluetooth headsets are lithium batteries now, there is no memory effect, and the built-in overcharge protection IC.
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3. The first charge is full, generally 2-3 hours, although the built-in overcharge protection IC, but try not to overcharge