Compatible Replacement: Lithium Ion Battery specifically designed for iRobot Roomba e and i Series e5 e6 e5150 e5152 e6198 i1 i1+ i2 i3 i3+ i5 i5+ i6 i7 i7+ Robot Vacuum Cleaner. Not compatible with iRobot Roomba Combo robot vacuum and mop models. Battery Specification: Voltage:14.4V. Capacity: 1800mAh/26Wh. What In Box: 1x Li-ion Battery. Quality Satisfaction: Your satisfaction is our greatest wish. We will provide you with the best quality products and services. If you are not satisfied, please feel free to contact us Replacement: Lithium Ion Battery specifically designed for iRobot Roomba e and i Series e5 e6 e5150 e5152 e6198 i1 i1+ i2 i3 i3+ i5 i5+ i6 i7 i7+ Robot Vacuum Cleaner.