This week I got the saw out for its first wood cut and I was very impressed! The wood for the first loads was Western Hemlock from two logs the first one 18 " in diameter and the second was 14" in diameter making up a load of 1/2 cord ,the saw used just under 3 batteries ( AP 500 S), The second load came from 20"and 14" hemlock again 1/2 cord this time using just over 2 batteries . The saw is using a 20" bar .