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We had a chance to test and compare two robot vacuums: iRobot Roomba S9 vs iRobot Roomba 650 and this review should help people who are looking for a good robot vacuum. Based on our rating, Roomba S9 has the overall rating of 9 out of 10 versus 6.5 for Roomba 650.
Advantages iRobot Roomba S9 over iRobot Roomba 650
- Better suction power, 2000 PA vs 600 PA
- Roomba S9 has mapping function that can map your area and uses smart path planning to clean more efficient
- Single room mode to remove dirt in one room
- When you want to give your area an intense clean, intensive mode will increase suction power
- Voice control
- Better battery capacity, 3300 mAH vs 2600 mAH
Advantages iRobot Roomba 650 over iRobot Roomba S9
- Lower noise level, 68 dB vs 70 dB
Common features and specifications
- Both robot vacuums are Wi-Fi enabled
- Equal dust bin capacity: 400 ml
- Dry cleaning mode
- A Virtual Wall creates an invisible barrier that robot vacuums won't cross
- One side brush
- Equal battery life: 120 min
- Equal charging time: 4 hrs
Dimensions
A noticeable difference between two models is the size, which is 30.9 x 8.8/12.2 x 3.5 (D x H) cm/inches for the Roomba S9 and 34 x 9.1/13.4 x 3.6 (D x H) cm/inches for the Roomba 650. The weight of the Roomba S9 is 3.6/8.1 kg/lbs, and for the Roomba 650 it is 5.3/11.7 kg/lbs.