I acquired a Surface Pro X. I can't compare it to a 7 but battery life is excellent so far. One thing that my previous Surface Pro 4 did was Connected Standby.

I acquired a Surface Pro X. I can't compare it to a 7 but battery life is excellent so far. One thing that my previous Surface Pro 4 did was Connected Standby. It would usually be fine and wake up after an hour asleep just 1 or 2 percent battery down. But then other times I'd go to use it and it'd be at 20%. So far this X has not betrayed me like that. It's been good for regular tablet use (not continuous) for 10 hour days, easy.