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There are different types of mowers - push (usually 4cycle), push+self propelled, riding one(s), then 2cycle scythe types, and then trimmers and brushcutters (spinning blades). Those options (more or less) are available battery powered, too. Battery powered ones have shorter use per charger but they are lighter (and usually less powerful).

However, if you can use a robot one (or few of them), it tends to be an easier setup - it does require flatter lawn and what not, though. However they are insufficient in cases where one really needs a riding mower.

Personally, I have/use a robot, a battery powered strimmer, gas powered brushcutter, and a push behind mower. The main job is done by the little robot, but the rest have their uses as well.