How to install: 1. Turn Power switch to the Off position. 2. Be sure dust bin is empty, then place Roomba upside down(with cleaning brushes showing) on a flat surface. 3. Guide the Battery Pack into the battery compartment using your index fingers(as shown). The Battery Pack will click into place when properly seated in Roomba. How to remove the old battery pack 1. Repeat Steps 1 & 2 from above. 2. Place your index fingers under the guide tabs on the Battery Pack, then pull upward to release the Battery Pack. Compatible: iRobot APS 4905 Tenergy 11701 Tenergy 11709 iRobot Discovery Series iRobot Dirt Dog? Models iRobot Create Models iRobot Roomba FloorVac 400 Series Models iRobot Roomba 400 Series: iRobot Roomba 4000 Roomba 4100 Roomba 4105 Roomba 4110 Roomba 4130 Roomba 4150 Roomba 4170 Roomba 4188 Roomba 4210 Roomba 4220 Roomba 4225 Roomba 4230 Roomba 4232 Roomba 4250 Roomba 4260 Roomba 4296 Roomba 400 Roomba 405 Roomba 410 Roomba 415 Roomba 416 Roomba 418