I don't believe hour meters.
Sometimes they're disconnected.
Anyway, there is a stark difference between a mower with only 300 hours and one with 1000.
You should be able to tell just by examining the wear and tear on it.
I'm not a rocket scientist but it would seem to me that the battery would run down WAAAAAAAY before the 1000 hour mark.
Pull up your britches, the BS is all around you.
Remembering all my departed friends.