Product Detials: Battery Capacity: Upgraded 4000mAh Battery Voltage: 14.4 V Battery Type: Ni-MH Color:Yellow Dimension: 5.7 x 2.7 x 2.5 inches Weight: 1.6 pounds Condition: Brand New High Quality Replacement Battery Compatible with: Discovery Series Create Models Dirt Dog Model Robot Roomba 400 Series (some example compatible models):400 405 410 415 416 4184000 4100 4105 4110 4130 4150 4170 41884210 4220 4225 4230 4232 4260 4296 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.