On modern Thinkpads, less that 0.5% of the battery per hour is expected, so if you disable automatic suspend to disk (aka "suspend to both") to save a few TBW from your NVME, expect to lose about 10% per day.
Personally, I like that Windows suspend to disks can be setup to only kick-in if a specific power budget has been exhausted: if the laptop has been sleeping for 5 days while disconnected, with 50% of the battery gone, it's neat to suspend to disk so that a week later (or more) it has enough power to resume work.
