Inside the Gigabyte Aero 15 is an enormous 94 Wh non-removable battery. This battery is far larger than a typical gaming laptop battery, so it's clear Gigabyte wants you to be able to use this laptop away from a charger for significant amounts of time.
I expected the Aero 15 to perform a little bit better than it did considering the size of the battery. Nevertheless, the Aero 15 performs significantly better than the ultra-slim GS63VR, and will comfortably beat most gaming laptops. It falls in the same range as a lower-tier ultraportable laptops, which isn't a bad result considering the power inside.