Battery powered yard tools

I have a black and decker battery powered weed eater my wife bought me because my gas one crapped out last year. At first I was like wth did you buy that piece of crap? I don't want no electric weed eater! But then after I used it I probably will never buy another gas one. It's super light has just as much power as any gas trimmer iv ever had(iv never had a good stihl or anything) and I dont have to stop and mix gas. One less gas can i have to fill! It came with two batteries so I can swap them out if one dies. It only takes about 60 mins to charge one and it seems to last about 40 mins I have right at 40-50 mins worth of trimming so I can usually finish with one battery.