Interesting read:
https://9to5mac.com/2018/09/19/iphone-xs-max-xr-battery-specs/
"As it turns out, the XS features roughly a 2% smaller battery than its predecessor with a 2,658 mAh capacity compared to 2,716 mAh of the X."
"As for the XS Max, as expected, it offers the largest battery Apple has put in an iPhone with 3,174 mAh with the XR coming in just below that with 2,942 mAh."
EDIT: didn't see that there was already a thread on this:
https://forums.macrumors.com/threads/battery-size-for-xs-xs-max-and-xr-finally-revieled.2139595/
https://9to5mac.com/2018/09/19/iphone-xs-max-xr-battery-specs/
"As it turns out, the XS features roughly a 2% smaller battery than its predecessor with a 2,658 mAh capacity compared to 2,716 mAh of the X."
"As for the XS Max, as expected, it offers the largest battery Apple has put in an iPhone with 3,174 mAh with the XR coming in just below that with 2,942 mAh."
EDIT: didn't see that there was already a thread on this:
https://forums.macrumors.com/threads/battery-size-for-xs-xs-max-and-xr-finally-revieled.2139595/