I just purchased, in the U.S. :

DJI - Mini 4 Pro Fly More Combo Drone and RC 2 Remote Control with Built-in Screen - Graythe batteries in this kit are the "plus", the 3850 mah.
Do all kits have the larger batteries?

No, only the Fly More Combo Plus should have the Plus batteries.

That looks like the regular battery kit, not the plus.

Hi there. Thank you for reaching out. Upon checking the link that you sent, it seems that this combo is included with the standard battery. If you want to purchase a combo with the Intelligent Flight Battery Plus, you should purchase the DJI Mini 4 Pro Fly More Combo Plus (DJI RC 2). Hope this helps. Thank you for your valued support.