Apple has previously added to the iOS system to detect components such as screens and batteries and display whether they are original. Original parts have a complete experience, but being deemed non-original will limit functions. For example, non-original batteries cannot display battery health, etc.
Another situation is that the battery is indeed a genuine Apple product but not a brand new battery. This may be a new battery removed from other devices or a used battery. Previously, iOS would mark it as used in the battery repair history, which means that the battery is not brand new (regardless of whether it is brand new, as long as it is removed, it is not considered brand new).
Now in the iOS 18.5 Beta version, Apple has changed the used to second-hand to enhance the reminder. A Weibo post posted by Weibo user @马子juni shows that the second-hand mark of the battery can be seen in iOS, About This Machine, and Repair History.
This kind of mark may be mainly used to remind users. Originally, users could not directly tell whether it was a brand-new battery after seeing the repair history. Now, after changing it to second-hand, it is really clear. It is estimated that Apple wants to use this method to make it easier for users to understand the battery repair history and crack down on those businesses that pretend to be brand-new batteries.
Due to the high price of Apple's official original batteries, many netizens will choose to buy third-party batteries to replace themselves or have them replaced by non-Apple authorized repair shops. These batteries are not original and may not show a second-hand mark, but the health level may not be visible in the battery health.
If the user purchases an official Apple original battery and replaces it, they can perform remote diagnosis. After remote diagnosis, if it is indeed a brand new original Apple battery, it will provide a complete experience, including battery health display, etc.