- brandnew.uk.com
- Compare
- L40 Ultra vs Roomba Combo j9+
Dreame L40 Ultra vs iRobot Roomba Combo j9+
What L40 Ultra does better (4) and where Roomba Combo j9+ wins (4) — every spec side by side.
vs
8.7Navigation2.6
6.9Mopping5.0
7.3Base station2.7
8.1Battery5.8
Dimensions
Size comparison
L40 UltraRoomba Combo j9+
| L40 Ultra | Roomba Combo j9+ | Difference | |
|---|---|---|---|
| Height | 104 mm | 87 mm | +17 mm |
| Width / diameter | 350 mm | 348 mm | +2 mm |
| Length | 350 mm | 348 mm | +2 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is L40 Ultra better than Roomba Combo j9+?
- Obstacle avoidanceAI camera vs Basic sensors (infrared / bumper)
- Mop typeRotating mop pads vs Mop pad
- Base stationAll-in-one dock (empty + wash) vs Auto-empty dock
- Battery capacity5,200 mAh vs 4,500 mAh+16%
Why is Roomba Combo j9+ better than L40 Ultra?
- Water tank (robot)80 ml vs 210 ml2.6×
- Height104 mm vs 87 mm+20%
- Charging time210 min vs 180 min+17%
- Dustbin (robot)300 ml vs 313 ml+4%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 11,000 Pa | — |
| Dustbin (robot) | 300 ml | 313 ml |
| Main brush | Single main brush | Dual main brushes |
| Side brushes | 1 | 1 |
| Carpet detection | Yes | Yes |
| Dirt detection | Yes | Yes |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | — |
| Navigation sensors | LiDAR laser (LDS), Wall sensor, Cliff sensors | Cliff sensors |
| Obstacle avoidance | AI camera | Basic sensors (infrared / bumper) |
| Threshold climbing | 22 mm | — |
| No-go zones / virtual walls | Yes | — |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Rotating mop pads | Mop pad |
| Mop lifting on carpets | Yes | Yes |
| Mop lift height | 10.5 mm | — |
| Automatic mop removal | Yes | — |
| Extending mop (edges) | Yes | — |
| Water tank (robot) | 80 ml | 210 ml |
| Base station | ||
| Base station | All-in-one dock (empty + wash) | Auto-empty dock |
| Auto-empty dust station | Yes | Yes |
| Dust bag (dock) | 3.2 l | — |
| Mop washing in the dock | Yes | — |
| Hot-water mop washing | Yes | — |
| Hot-air mop drying | Yes | — |
| Automatic water refill | Yes | Yes |
| Plumbed water connection | Yes | — |
| Clean water tank (dock) | — | 3 l |
| Battery & runtime | ||
| Battery capacity | 5,200 mAh | 4,500 mAh |
| Runtime | 194 min | — |
| Charging time | 210 min | 180 min |
| Recharge & resume | — | Yes |
| Size & weight | ||
| Width / diameter | 350 mm | 348 mm |
| Length | 350 mm | 348 mm |
| Height | 104 mm | 87 mm |
| Weight | — | 4.1 kg |
| Shape | Round | Round |
| Colours | White | Black, Gold |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant, Apple Siri | Amazon Alexa, Google Assistant, Apple Siri |
| Live camera view / video call | Yes | — |
