Power Smart 20V Lithium cordless weed eaters can convert from trimmer to edger in seconds. The adjustable handle makes cutting comfortable. The set includes a 2Ah super battery and charger. AFS automatically feeds the trimmer line as needed; a replacement string spool is included. The trimmer is ultra-lightweight. The Cutting diameter is 12 inches. The line diameter is 0. 065 inches. This trimmer comes with one battery. This weed wacker is covered by a 2-year full warranty.