Category: Home Appliances and Electronics. Review: iRobot is a well-known brand that produces high-quality robot vacuums. In this review, we will discuss three iRobot Roomba models - the 640, 960, and i7. These products are designed for different purposes but share some common features such as being ideal for pet hair, carpets, hard floors, self-charging, and Wi-Fi connectivity. The iRobot Roomba 640 is a budget-friendly option that offers great performance on various surfaces. It has a powerful suction that can easily remove dirt, dust, and debris from your floor. The vacuum also features Nastima Xlife 4400mAh Lithium ion Battery for iRobot Roomba 500 600 700 800 Series 510 530 533 535 550 551 560 561 562 577 580 610 620 630 650 655 671 675 760 770 780 790 805 870 880 890, which provides up to 4 hours of cleaning time. The vacuum also has a self-charging feature that ensures it always stays charged for its next cleaning session. The iRobot Roomba 960 is a mid-range option that offers advanced features such as Wi-Fi connectivity and smart mapping. It uses sensors to map out your home and create an optimal cleaning plan, ensuring every inch of your floor is covered. The vacuum also has a powerful suction that can easily remove dirt, dust, and debris from various surfaces. The MELASTA 14.8V 5200mAh Lithium ion Battery Replacement for iRobot Roomba 980 690 985 960 890 655 650 770 805 870 880 595 550 900 800 700 600 500 Series (UL&CE Certification Battery Cells) provides up to 1 hour of cleaning time. The iRobot Roomba i7 is a high-end option that offers the best features such as Wi-Fi connectivity, smart mapping, and voice control with Alexa. It uses advanced sensors to map out your home and create an optimal cleaning plan, ensuring every inch of your floor is covered. The vacuum also has a powerful suction that can easily remove dirt, dust, and debris from various surfaces. The iRobot Roomba 890 Robot Vacuum- Wi-Fi Connected, Works with Alexa, Ideal for Pet Hair, Carpets, Hard Floors is another high-end option that offers similar features to the i7 but at a lower price point. In conclusion, iRobot Roomba vacuums are great options for anyone looking for an efficient and convenient way to clean their home. The 640, 960, and i7 offer different levels of performance and features, making them suitable for different budgets and needs. If you have a small budget, the 640 is a great option that offers excellent cleaning power and self-charging functionality.