After buying a fancy lithium battery for my ice-fishing sonar 2 years ago, I was left without sonar twice last season because of bad charger issues.
My Ice Auger is powered by a Milwaukee 1/2" drill, and a big 5 AH Lithium battery. There are adapters for their batteries to power other things, like USB for phones, jackets, etc. The Milwaukee brand version has a little plug in the side as well as USB port, for $30.
I found a cheap little cord to fit the 22 AWG DC outlet, and fashioned spade connectors for my sonar. Now have a great power supply, should the sonar battery die again.
Another reason I like the drill to auger setup is I can drill pilot holes for my shelter's stakes with a 5/16" drill bit, and get set up quickly.
Hope you get onto the ice soon. I've been bored out of my skull recovering from wrist surgery, and can't reel or even unhook a fish for another 3 weeks. Grrrrr.