Problem causes:
1. The earphones drain power fast in the transparent and noise-cancellation modes.
2. The power of the earphone is low.
3. Higher volume will consume power faster.
4. The earphone may be in an environment with large electromagnetic interference or there may be obstacles such as walls between the earphone and the phone.
Solutions:
1. It is recommended that you use the buds fully charged.
2. Charge the charging case frequently when not in use.
3. Turn down the volume to see if the usage time is normal.
4. Please keep the buds away from objects with large electromagnetic interference such as microwave ovens, and ensure that there are no obstacles between the earphones and the phone when using.
5. If you do not use the buds for a long time, it is recommended that you charge the charging case regularly to avoid battery damage.
6. If your buds are used in noise cancellation mode, which consumes more power, it's advised to choose other modes to prolong the using time.
If the above can not solve the problem, please visit the realme Service Center for testing.