Battery unpluggability: 8.5/10, mostly easy. Just make sure you don't poke anything flammable with your tweezers.

The battery itself is mildly glued down. Be persuasive, but don't make it angry.

Battery specs? It clocks in at 2.74 Wh (740 mAh @ 3.7V).

That's about 25% of the capacity of an iPhone 12, or:

1.9% of a small car battery (kind of)

Inside the range of the sort of "general purpose" AA battery that Game Boys ate for sport

Close in performance to a 500-pound potato battery once driven around Portland, Ore.