Are you sure your AirPods Max have the latest firmware? This issue was addressed in an update right after the first version came out and people reported the issue you're describing:
If you set your AirPods Max down and leave them stationary for 5 minutes, they go into a low power mode to preserve battery charge. After 72 stationary hours out of the Smart Case, your AirPods Max go into a lower power mode that turns off Bluetooth and Find My to preserve battery charge further
[Archive link, as the latest Support doc doesn't have this wording any longer]
[0]https://web.archive.org/web/20210315052229/https://support.a...
What does “down” and “stationary” mean? I put my Sony to random paces, mainly just throwing it into my backpack. Would that be considered as down and stationary? Would it be turned off if I’m on the move? In a car? On a bus?
It's still extremely odd that they don't just... turn off.. ever? Even the case marketing copy notes this:
> When stored in the soft, slim Smart Case, AirPods Max enter an ultra‑low‑power state.
They must have been utterly unusable on release then.
I have latest firmware and if I forget to place my Max's in their case they are at half power or less within a few days.
As such they get used a lot less than I would otherwise. One of my more wasteful purchases in the past few years.
That and the super annoying behavior where two floors away they decide to randomly pair with my Mac Studio when someone Slack Huddles me or whatever, then I need to fiddle with settings to get my airpods pro to connect instead.
This is coming from someone who thinks the Airpods Pro are downright magical in how well they work.
Could be because I also pair them with regular old Bluetooth from a PC in addition to the Apple ecosystem. The earbuds likely don't have the same issue because they inside a case and are fully turned off when not in use.
Sound quality honestly isn't that great either, but I suppose that's more inherent in headphones in general vs. speakers than anything to do with them specifically.
I got excited there for a second — free fix for the most annoying problem with my headphones! But no, my AirPods Max have the latest firmware and still have this issue. Any time I leave them for more than a day, the battery is drained.