Roborock Q7 Max vs Xiaomi Robot Vacuum S20
Both are budget robot vacuums that vacuum and mop, and neither ships with a self-emptying dock. The Xiaomi S20 has more rated suction (5000Pa vs 4200Pa) and a slightly bigger dustbin, while the Roborock Q7 Max runs longer (up to 180 minutes vs 120) and has a proven app and LiDAR mapping. Buy the Roborock for larger floors and better software; buy the Xiaomi if the price gap is wide and you want more suction on paper.
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Roborock Q7 Max
Choose the Roborock Q7 Max if you have a large floor plan, want up to 180 minutes of runtime, and value Roborock's mature app and map controls.
- Up to 180 minutes of runtime covers large homes on one charge
- 30-level water flow gives fine control over mopping wetness
- All-rubber brush resists hair tangles
- LiDAR mapping with saved maps and no-go zones in the Roborock app
What separates them
| Roborock Q7 Max | Xiaomi Robot Vacuum S20 | |
|---|---|---|
| Rated suction | 4200Pa | 5000Pa |
| Battery runtime | Up to 180 min | Up to 120 min |
| Dustbin capacity | 0.66 gal combined dustbin/water tank | 400mL dustbin plus 270mL water tank |
| Navigation | PreciSense LiDAR mapping | LDS laser navigation with 360-degree detection |
| Mopping water control | 30-level adjustable water flow | Y-shape mopping route, no adjustable flow listed |
| Brush type | All-rubber tangle-resistant brush | Not specified |
| App and voice control | Roborock app, 2.4GHz Wi-Fi only | Mi Home/Xiaomi Home app, Google Assistant |
Price history
- Roborock Q7 Max: lowest $199.99 on Oct 31.
- Xiaomi Robot Vacuum S20: lowest $193.42 on Oct 31 at Microless.com.
Prices at every store
Roborock Q7 Max
- eBayPre-owned
In stockSold by retail_king
$372.40Free shippingObserved Nov 3, 2026, 2:49 PM
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Specs compared
| Spec | Roborock Q7 Max | Xiaomi Robot Vacuum S20 |
|---|---|---|
| Weight | 13 lb | 3.5 kg |
| HEPA Filter | Yes | — |
| Cordless | Yes | — |
| Color | Black | — |
| Capacity | 0.66 gal | — |
| Surface Type | — | Wet & Dry, All Floors |
| Wet / Dry | — | Yes |
| Suction Power | — | 5000 Pa |
| Cleaning Width | — | 32.5 Centimeters |
| Water Tank Capacity | — | 270 ml |
| HEPA Certified |
What reviewers say
Roborock Q7 Max
Owners of the Q7 Max generally rate it well for suction and mapping at its price. Common complaints are the lack of a self-emptying dock and the basic mop.
- Reliable LiDAR mapping and room-by-room cleaning
- Good pickup of pet hair on hard floors and low-pile carpet
- Rubber brush needs little hair detangling
- App scheduling and no-go zones work well
- Mop is light-duty and does not scrub
- Bin fills quickly in large or hairy homes
- Can struggle on thick carpet and high thresholds
- Setup requires 2.4GHz Wi-Fi
Xiaomi Robot Vacuum S20
Owners generally find the S20 a solid budget robot that maps reliably and picks up well on hard floors. Many note the mopping is light-duty and the app can be slow to connect.
Questions and answers
- Which has stronger suction, the Roborock Q7 Max or the Xiaomi S20?
- The Xiaomi S20 is rated at 5000Pa and the Roborock Q7 Max at 4200Pa. On paper the Xiaomi pulls harder, but real pickup depends on brush, airflow and how the route is planned, so the gap is smaller in practice than the numbers suggest.
- Which is better for a large home?
- The Roborock Q7 Max. Its battery is rated for up to 180 minutes versus 120 minutes on the Xiaomi S20, so it covers more floor before returning to charge.
- Does either one empty itself?
- No. Both are vacuum-and-mop robots that dock only to charge. You empty the dustbin by hand, roughly every few cleans depending on floor size and pet hair.
- Which is better for pet hair?
- The Roborock Q7 Max has an all-rubber tangle-resistant brush, which handles long hair and pet fur with less wrapping. The Xiaomi S20 lists three power modes for hair but does not specify a rubber brush.
- Is the Xiaomi S20 worth it over the Roborock?
- Only if it costs clearly less. You gain rated suction and a bigger dustbin but give up runtime, adjustable mopping water flow and Roborock's more established mapping app.
- Do both work with voice assistants?
- The Xiaomi S20 lists Google Assistant support. The Roborock Q7 Max works through the Roborock app and common voice assistants, but this listing only confirms 2.4GHz Wi-Fi, so check 5GHz support before buying.