I use an 18vlt dewalt on a 5 inch lazer auger. It works super slick on ice less than a foot. I can get about 20 holes per battery. I carry 3 batterys at all times and make sure you keep them dry and covered. When the ice gets over a foot is when it struggles. you can still cut holes but the amount drastically goes down. I usually go through 2 sets of blades a year. Make sure you get a good adapter with a fail safe bar because at sometime that auger is going to detach. You can use a 6 inch but a 5 is the way to go in my book. if you plan on cutting some real thick stuff look into power auger. Hopefully this helps, Dan