The Laptop 13 bios battery only charged off external USB-C power. I’m sure they are going to change this.

So in shipping the bios battery could get low, and if you run your new laptop down to zero off the battery, you could in theory exhaust the bios battery putting it into a weird state. Because the rechargeable battery doesn’t hold as much charge as a normal non-rechargeable bios battery it needs to be recharged at least every two weeks (or something surprisingly short).

So if you don’t use your laptop for a long time, you could get into the state where you can’t boot it until you charge the bios battery with external power for 24 hours.

I didn’t run into this exact issue, but it complicated the debugging of my can’t use the battery at all problem.