Chosen Solution

Purchased new battery, fully charged, but only runs for a minute

RoombaQueen , Maybe try the battery reset procedure to see if that corrects your issue, you may have to repeat this procedure a few times. See link below on how to reset. Good luck. I hope this helped you out, if so let me know by pressing the helpful button. https://www.youtube.com/watch?v=s7Lfg0KZ