Buddy and I run 18V rigid hammer drills. Don't use the hammer function. Mine is an x3 brushed and his is an x4 brushless. Both run 6"Lazer augers and have no problem drilling 60 holes or more on one battery in a foot of ice. Mora augers are awful for drills. They just don't cut like a Lazer. Lazers take no battery at all. We raced it vs. A Nils last year. 5 holes each, same drill, and same ice. Lazer was nearly a second faster each time.
The 20V dewalts are not a true 20 V. They drop right away just and become a 18V or so.