That looks impressive. Obviously more power requires more battery.
For a few years I used the EGO 650 with 56V 5.0AH battery. The unit worked quite well and had good power for wet fall leaves. Where it suffered is in battery life. When moving a big pile of wet leaves on my PA home, the battery had about 11 minutes of 'turbo' run time, which was nowhere near enough. I ended up using my Echo 210 gas blower and doing about 45 mins of blowing after the EGO ran out.
Plenty of leaves, lawn was prob 100x80 feet. Driveway was at least 100 feet, with a circle at the end, small deck and patio out back.
It's not like the property was huge either. Just a 1920's house on something a bit more than a postage stamp lot.