Hi nath,
My biggest bitch with batteries is the fact the production of these is far more damaging to the planet than petrol engines ever can be. This is never mentioned, it is kept a a big secret. And they also ignore the fact that in most cases coal is the base power source for recharging most of these batteries.
I was using my Stihl Farmboss yesterday that I bought in the early eighties, what a beautiful saw that machine is, never misses a beat, and I probably started it 30 times yesterday, second pull every time