It is better than it was originally, however mine too drain pretty fast. At least the controller led turns off now, whereas before it would just always remain on or blinking. I think it must be related to the tracking method being used in the Rift S, ie Inside Out versus Outside In for the CV1.
battery life on my Samsung Odyssey Plus drains the batteries even faster as stated above inside out tracking drains the batteries pretty fast also the oculus touch controllers use only one AA battery where the WMR headsets controller use two AA batteries .
Technically, the battery use should be very similar. While the tracking system changed, that's on the headset/sensors. The controllers work the same regardless of inside-out or outside-in. In both cases the controllers flash IR LEDs, communicate with a 2.4GHz wireless system and have haptics and capacitive sensors. Actually one less capacitive sensor on each controller now (the thumb rest and its sensor are gone). Also looking with a camera I can see that the old Touch has 24 LEDs and new Touch has only 15, plus the old ones look a little brighter and less flicker, so the tracking for the old Touch should drain the batteries more.
If there's a battery use difference, its probably how the firmware is detecting when to sleep. That's the big problem they've had for quite a while, they stay active far too long (I've had 12+ hours staying active when not in use).
A week isn't bad considering the Vive wands get about 6-8 hours. 🙂
Although I'd love it to go back to the 2017 battery life I had, months on a single set of AAs.