Just a reminder… Ice is just around the corner. Get them batteries charged again. Should do so once a month preferably if not every other month. If you haven’t charged it since last ice… I would charge it, run it in a bucket of water or something and see how fast it drains. If it runs out quick… better to find out now and invest in a new battery than hit the ice and be fishing “blind” after a half hour. 
Now would also be a good time to get that auger running and/or tuned up! If ya ain’t got one… click on the banner above