Replacement iRobot Roomba 650 Battery and 3-Arm Side Brush - Kit Includes 1 High Capacity Battery and 3 3-Arm Side Brush Replacement iRobot Roomba 650 Battery and 3-Arm Side Brush For Newer Version of the Roomba 650. Please check your Roomba to make sure you are purchasing the correct parts 3500mAh, 14.4V, NI-MH One Year Warranty On Sale for a Limited Time!