Hands-On With Apple's New Smart Battery Case for iPhone 11 Pro Max
https://www.macrumors.com/2019/11/22/11-pro-max-smart-battery-case/
https://www.youtube.com/watch?v=hXpV0GibYQo
https://www.youtube.com/watch?v=LflJML10kxA
There are two 1,430mAh battery cells inside of the
iPhone 11 Pro Max version of the Smart Battery Case,
up from the 1,369mAh battery cells used last year
in the iPhone XS Max Smart Battery Case.
The two battery cells are wired together into one battery,
allowing the cases to offer 10.9Wh of energy
(vs. 10.1Wh in the prior XS Max model).
iPhone 11 Pro Max 电池壳里面有两颗 1,430mAh 10.9Wh 的电池，
去年 XS Max 是 1,369mAh 10.1Wh。
https://i.imgur.com/KzbRJpH.jpg
https://i.imgur.com/XwV1b9W.jpg
https://i.imgur.com/2luUpOO.jpg
https://i.imgur.com/iAFydWO.jpg
常跑户外或旅游的人或拍长影片的人可以考虑这产品，
或是电池老化后除了换电池，也有一个选择(但届时可能断货)。
iPhone 11 Pro Max 电池总容量为 3969mAh 15.04Wh，
电池壳里面有两颗 1,430mAh 的电池，应该能延长不少使用时间。