Let me tell you, this battery brought my ancient Roomba 650 back from the dead! After getting that dreaded charging error code, I was ready to toss my loyal cleaning buddy until I found this affordable alternative to iRobot's pricey repair service.

The installation was straightforward - just pop off the battery cover, swap the old one out using the handy straps, and snap the new one in. Though heads up: mine threw an Error Code 3 at first until I slightly loosened a case screw (weird quirk, but it worked!).

Performance-wise? Night and day difference! My Roomba now runs strong for solid 40-minute cleaning sessions - way longer than its wheezy final days with the OEM battery. The included side brushes (bonus!) fit perfectly on my model too.

After three months of daily use, it still holds charge like a champ. Pro tip from the manual: charge it monthly even during storage to maintain battery health. For under $50, this has been one of my smartest home maintenance purchases - why pay $150+ when this does the job beautifully?