For smartphones, the longer the battery life is, the better. However, the current battery technology is difficult to break through, so I have to resort to some auxiliary means.

According to Appleosophy, the Smart Battery Case for the iPhone XS/XS Max appeared in Apple’s sales guidance document issued to retailers.

However, the material column shows the cortex, but the macrumors insist that it is misleading, because the picture still looks like the same silicone as the previous generations.

In fact, before 9to5mac found clues to the new iPhone smart battery case in the iOS 12 code, iPhone XR also.

According to the data, Apple has previously launched two generations of smart battery cases for iPhone 6/6s/7, including iPhone 6/6s with an additional 1877mAh and iPhone 7 with an additional 2365mAh.