Assuming nominal voltage of 3.7, that’s about 60Wh. For comparison, the 14" MacBook has a 70Wh battery.

That’s not good battery life but it depends on what kind of usage they’re assuming with that 7H number. I’m not sure a MacBook runs that long under high load. If it’s 7H on a heavy load, that’s respectable.

Edit: not sure what class of device is the best comparison here. Laptop? Tablet? Phone? 🤷