[notjulianjaynes]

Yes and I don't think it's that big a deal tbh, provided the internal battery is easily replaceable. My Thinkpad has both, and technically I could hotswap the external battery, but why lug around a second laptop battery when I can have the same capacity in a USB-C power bank that can also charge my phone if needed.

Time to swap external battery: 10 seconds

Time to replace internal battery: maybe 10 minutes if you had to look it up. It's like 2 screws once you take the bottom cover off.

But in the four years I've owned this laptop, I've replaced my external battery once, when the original went bad.