In reply to Presley Whippet:
To completely ignore your question in the best tradition of ukc, I switched from petrol to electric this year and there's no way I would go back.
We have a very large garden and the lawns are big, lumpy, oddly shaped, often on steep gradients and have various rocks, tree roots, and lumps of concrete that leap out and attack passing mowers. With our mower (Ego 56V) I can do the whole garden on a single charge, it is lighter, quieter, self propelled (this can be a bit irritating admittedly), there's no need to make up 2-stroke, no unpleasant petrol fumes, no starter rips to pull, and no maintenance. It really is massively more pleasant. It even folds away and sits up on its end in the shed, so the footprint is about 2ftx1ft.
Battery technology is finally getting there for mowers; the only unknown from my perspective is how long it will be before the battery loses capacity (our old petrol mower was 20 years old, but I doubt a battery model would still hold charge in 20 years time). I can also switch the battery across to the strimmer (and indeed pay yet more for various leaf blowers, pruning saws, and everything else should the urge take me and the CFO agree).
I still have a 2 stroke Husqy hedge trimmer but suspect it is on borrowed time....
Happy mowing
b