I bought this battery to replace my Brava 380T iRobot because the original battery no longer holds a charge over time. Since there were no installation instructions, I watched a YouTube video to make sure I installed it correctly. It was really easy to do. Now my iRobot works just as long as it did when it was new and it takes just as long to charge in the docking station with this new battery. It's like having a new iRobot again.