2 years ago I bought my oldest son a DeWalt 20 volt hedge trimmer and he really likes it. I talked to him earlier this morning and he can't get the FS55 Stihl I gave him running. It was one I bought not running, I cleaned the carb and gave it to him. He has a small 1/2 acre subdivision lot and it only takes him 15 or 20 minutes to do all his weedeating. He said DeWalt made a 20 trimmer but I'm afraid it might not have enough power plus I've read that Dewalt is having some reliability problems with them (Amazon Reviews). Who here uses battery powered trimmers and what do you recommend. I'll probably get him something for Christmas.