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- MD 20021 vs Q7 Max+
Medion MD 20021 vs Roborock Q7 Max+
What MD 20021 does better (3) and where Q7 Max+ wins (2) — every spec side by side.
Dimensions
Size comparison
MD 20021Q7 Max+
| MD 20021 | Q7 Max+ | Difference | |
|---|---|---|---|
| Height | 80 mm | 96 mm | −16 mm |
| Width / diameter | 350 mm | 353 mm | −3 mm |
| Length | 350 mm | 353 mm | −3 mm |
| Weight | 3.4 kg | 3.7 kg | −0.3 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is MD 20021 better than Q7 Max+?
- Height80 mm vs 96 mm+20%
- Charging time240 min vs 360 min+50%
- Dustbin (robot)600 ml vs 450 ml+33%
Why is Q7 Max+ better than MD 20021?
- Base stationCharging dock vs All-in-one dock (empty + wash)
- Runtime140 min vs 180 min+29%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 2,800 Pa | — |
| Dustbin (robot) | 600 ml | 450 ml |
| Main brush | Single main brush | — |
| Side brushes | 2 | 1 |
| HEPA filter | — | Yes |
| Noise level | — | 67 dB |
| Navigation & obstacles | ||
| Navigation | — | Laser (LiDAR) |
| Navigation sensors | Cliff sensors | LiDAR laser (LDS), Cliff sensors |
| Obstacle avoidance | Basic sensors (infrared / bumper) | Basic sensors (infrared / bumper) |
| Room mapping & room selection | — | Yes |
| Mopping | ||
| Mop type | Mop pad | — |
| Water tank (robot) | — | 350 ml |
| Base station | ||
| Base station | Charging dock | All-in-one dock (empty + wash) |
| Auto-empty dust station | — | Yes |
| Mop washing in the dock | — | Yes |
| Battery & runtime | ||
| Runtime | 140 min | 180 min |
| Charging time | 240 min | 360 min |
| Recharge & resume | — | Yes |
| Size & weight | ||
| Width / diameter | 350 mm | 353 mm |
| Length | 350 mm | 353 mm |
| Height | 80 mm | 96 mm |
| Weight | 3.4 kg | 3.7 kg |
| Shape | Round | Round |
| Colours | White | — |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant | Amazon Alexa, Google Assistant |
