[alttag]

I had similar issues, but opted to go the route of replacing the battery rather than the whole Roomba. It's worked well for me.

In addition, Amazon reviews point to some third-party batteries that supposedly last even longer than iRobot ones.

[whoisthemachine]

Same here, I just replaced the battery with a cheaper third-party battery when the original ran out and get about 45-60 minutes of runtime out of it still after 2 years.