Roomba got stuck and now it won't go

Question

Hi, I am a new roomba owner by proxy of a garage sale. Lucky mE! Every time it gets stuck in a corner due to a thick area rug or a leg under a dresser it keeps running. I move it for another "clear" area but then it won't work. It gives me this beeping in song and then quits. This is after maybe 10 min of running. When it happened the 1st time I just re-docked it overnight and it worked again in the AM. Could it be the battery? If not, then what can you suggest?ThanksCarol