This hedge trimmer is very effective, I have used it for cutting and photinias elaeagnus who had never been cut in 10 years ... My arms take less time than the battery! I have the same type of 36V battery (larger capacity of course) on my bike has electric assistance for almost 2 years and I am very happy, only precaution: Never store the battery discharged for a long time for a complete discharge the endommagerais, even if the discharge is very low when not in use, it is real. Three green LEDs give an estimate of the battery charge. I found the charge of the battery very fast. Advantage in the heat: no gas to buy, no engine maintenance, no fumes, less noise and I especially do not ask me every time I use it if the engine goes well want to start! And another advantage of the wireless: I can use it in a working garden that does not have électrité!