I'm sorry for the inconvenience.
According to the situation you described, this kind of abnormal electricity display may be related to the system or battery, power management module, etc. Because you can't verify your actual usage, you usually use the power indicator as the real-time power reference state, which is related to the use and operation of the mobile phone, so the power may rebound.
Since the problem still exists after replacing the battery, it is recommended that you use a standard charger to charge and fully charge, and then try to restore the factory settings. You can find the corresponding options through system settings-backup and reset. Since restoring the factory settings will delete the original data information, it is recommended that you make a backup first. You can synchronize the data in the cloud through the cloud service, or back up the data on the computer through the music assistant. Can you access the cloud service official website/Lenovo/WSI/Station/ServiceStation/default.aspx? MIDH queries the nearest site. The business hours of maintenance stations are generally from 9: 00- 18: 00 from Monday to Sunday, except holidays, and local stations will adjust slightly according to their own operations. I suggest you call for detailed consultation before you go. Please refer to it.
Thank you for your support to Lenovo and wish you a happy life!