[mixermachine]

Most likely you have the Exynos CPU? I upgraded from a S21 Ultra (Exynos) to a S23 Ultra (Snapdragon).

Battery life is so much better. I use the 80% battery protection option and nearly always make it through the day. Only if I constantly watch videos the battery is flat in the evening.

With power saving and 100% battery I can reach 2 1/2 to 3 days. Loving it.

[microtonal]

Doesn't have to be Exynos. The US version has the Snapdragon 8 Gen 1, which had heating and battery drain issues. The Gen 2 solved these issues.

[cubefox]

The Snapdragon 8+ Gen 1 solved it by switching to a better TSMC node. The Gen 2 increased performance (on the same node) and got again somewhat less efficient.