My work machine is an M3 Macbook Pro. I put it to sleep on a Friday, and after a three-day weekend, it's still ready to go on Tuesday with 95% of battery left.
What's irritating is that a lot of Intel laptops used to be able to get pretty close to this, back when they supported legacy sleep states. I have yet to own a newer Intel laptop that can sleep for more than 24 hours without almost completely draining the battery.
