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- Roomba Combo j7 vs Q7+
iRobot Roomba Combo j7 vs Roborock Q7+
What Roomba Combo j7 does better (3) and where Q7+ wins (4) — every spec side by side.
vs
6.6Navigation5.8
2.3Mopping3.0
4.1Battery6.7
Dimensions
Size comparison
Roomba Combo j7Q7+
| Roomba Combo j7 | Q7+ | Difference | |
|---|---|---|---|
| Height | 87 mm | 96 mm | −9 mm |
| Width / diameter | 338 mm | 350 mm | −12 mm |
| Length | 338 mm | 350 mm | −12 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is Roomba Combo j7 better than Q7+?
- Obstacle avoidanceAI camera vs Basic sensors (infrared / bumper)
- Charging time90 min vs 360 min4×
- Height87 mm vs 96 mm+10%
Why is Q7+ better than Roomba Combo j7?
- Runtime75 min vs 180 min2.4×
- NavigationCamera (vSLAM) vs Laser (LiDAR)
- Base stationCharging dock vs Auto-empty dock
- Dustbin (robot)300 ml vs 750 ml2.5×
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | — | 2,700 Pa |
| Dustbin (robot) | 300 ml | 750 ml |
| Main brush | Dual main brushes | Single main brush |
| Side brushes | 1 | 1 |
| Dirt detection | Yes | — |
| Noise level | — | 67 dB |
| Navigation & obstacles | ||
| Navigation | Camera (vSLAM) | Laser (LiDAR) |
| Navigation sensors | vSLAM camera, Wall sensor, Cliff sensors | LiDAR laser (LDS), Cliff sensors |
| Obstacle avoidance | AI camera | Basic sensors (infrared / bumper) |
| Threshold climbing | 20 mm | 20 mm |
| No-go zones / virtual walls | Yes | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Mop pad | Mop pad |
| Water tank (robot) | — | 180 ml |
| Base station | ||
| Base station | Charging dock | Auto-empty dock |
| Auto-empty dust station | — | Yes |
| Dust bag (dock) | — | 2.5 l |
| Battery & runtime | ||
| Battery capacity | — | 5,200 mAh |
| Runtime | 75 min | 180 min |
| Charging time | 90 min | 360 min |
| Cleaning area per charge | — | 300 m² |
| Recharge & resume | Yes | — |
| Size & weight | ||
| Width / diameter | 338 mm | 350 mm |
| Length | 338 mm | 350 mm |
| Height | 87 mm | 96 mm |
| Weight | 3.4 kg | — |
| Shape | Round | Round |
| Colours | Black, Silver, Grey | Black |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant | Amazon Alexa, Google Assistant, Apple Siri |
