Just wanted to recommend these tools after using them this year. Investing is a line of products like Greenworks was an important decision for us this year. I've used them enough now to feel confident recommending these products to the Permies community.
Greenworks is also cheeper than Ego, plus they offer a larger variety of tools. All the 40V batteries are interchangeable with the whole 40V line of tools. There is also a 80V line available.
Clean energy is an important consumer decision. Creating market demand for rechargeable batteries will lead to a wider range of products compatible with battery technology.
Imagine if John Deere and Tesela had a baby! I hope there is enough demand to get an Electric Tractor and farm equipment in the works. Solar panels on the roof and a charging bay in the barn. That's the farm I dream of.
So far it's been cotton wood and maple as far as the trees i've identified. I would estimate the largest tree felled was 60ft tall cotton wood with estimated 12-14in diameter. It's cut surprising well to make 18in logs for firewood. I don't count how many cuts I get for a 4 amp hour battery. I would say you could log out a large tree with one battery. Haven't done hardwood yet though.
More advantages over gas chainsaw are that it is easier to start. It can be started by pressing two buttons while both hands are in the proper position to make the cut. There is less noise and vibration which makes it safer to use. Better for your hearing and no fumes to breath in.