Starting it is easy: there is a "plug" where you plug in the charger - unplug the charger and plug in a small dongle, push a button and pull on the safety bar and it starts right up. I'd suggest attaching the dongle to the mower so you don't lose it. Height adjustment is also really easy: one hand, one wheel, and you're done. I've had no issues with the charge running out. I don't have a large yard so I don't expect this to be an issue.