When the Redmi Watch 5 Active is activated for the first time, it is common to experience a rapid drop in battery life due to an initial brief charging period. This can result in the temporary display of inaccurate battery levels. After about 20 minutes of regular use, the battery will begin to reflect its true charge. To avoid this issue and ensure the watch operates at its best, it is recommended to charge the device for at least 30 minutes before using it for the first time. This ensures accurate battery readings and helps optimize the watch's performance over time.