[Product Information]

• Battery Volt: 14.4V
• Battery Type: Ni-CD
• Battery Capacity: 2500mAh; High Quality Battery
• Compatible Models:iRobot Discovery Series;iRobot Dirt Dog® Models; iRobot Create Models; iRobot Roomba FloorVac 400 Series Models
• Note: the battery needs to be charged at least 12 hours， you have to use battery several times， it just needed to be charged and discharged a few times in order to reach its full potential