As said above, there are two batteries here. One is “full-size”:

It has typical enough parameters:

The “half-size” battery is smaller:

It has a two times smaller capacity:

It’s up to the notebook’s owner which battery to use, but the device looks much better with the “half” battery in use. The Q30 is an image-making model, rather than a workhorse, after all. The half battery is also equipped with a charge level indicator, by the way:

So you can control its status without turning the notebook on.