Electric excavators are there, as they are low duty cycle, see sibling comments for details, but high load percent for long time is a killer for battery tech.
I could imagine tethered tractors with power line tensioned in the air, but the grid building cost will be quite high for intermittent usage. Only some land usages and plot shapes would work economically.
I could imagine tethered tractors with power line tensioned in the air, but the grid building cost will be quite high for intermittent usage. Only some land usages and plot shapes would work economically.