The Clam drill plate is awesome. Put any good 18 to 20 V drill on it and you are good to go. I keep my spare battery in a cooler bag with two hand warmers.
I should add that I was fishing Simcoe in mid Feb and was drilling through 16 to 18" of black ice and my 2.5Ah batteries did not last long. Glad I brought my Rapala gas auger for back up...