Milwaukee M18 Fuel hammer drill, as indicated by Phil with two 5ah batteries, and both a 5 and 7 inch Mora with sharpened blades every two seasons. I've popped 50+ 7 inch holes on a single battery and never depleted it below about 50%. The 50+ holes were through 8-10 inches of ice, for reference. I've never even had to put the second battery in the drill during an outing(though I obviously rotate them). And I leave it sitting outside in the cold for the most part, also. I also don't typically fish for extremely long periods on the ice. I'll go out from like 6am-1pm, or do short afternoon outings from like 12pm-5pm. The 50+ hole day was my longest day last year, and was about 12 hours on the ice, from about 6am-6pm. Everything gets charged as soon as I'm back at the house. For under $250 for the entire setup, you can't really go wrong, IMO. I watched out all last year for deals on that drill, and eventually Home Depot offered it for $229, I believe. May have been cheaper. Drill, two 5.0AH batteries, charger, and hard case.