Drilled through 26 inches of ice up in South Dakota last year with my Milwaukee fuel and my 6 inch K-drill. 30 holes on one battery. Don’t know how many less holes you would get with an 8 inch. Is it slower than my gas powered Honda? Yep, but not enough for me to care that much, for how lite it is, no stinky gas or exhaust, win,win in my opinion.