Yes, the Note 9 does have a supercapacitor inside (teardown)

We've seen a few Note 9 teardowns already, but when the grandmasters of all electronics' dissection speak, we ought to listen. The crafty folks from iFixit have gone through the trouble to take apart the new Galaxy Note 9, and it turned out that it was really a trouble, as with most of today's sealed waterproof flagships.

The Note 9 got a 4/10 score for repairability, as it needs a lot of heating, prying and suction cups to get open. The huge 4000 mAh battery is also glued in its own well, and, overall, replacing it is not for the faint ...