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- Deebot T20 Omni vs Roomba Combo j9+
Ecovacs Deebot T20 Omni vs iRobot Roomba Combo j9+
What Deebot T20 Omni does better (5) and where Roomba Combo j9+ wins (3) — every spec side by side.
vs
8.6Navigation2.6
8.5Mopping5.0
8.0Base station2.7
5.4Battery5.8
Dimensions
Size comparison
Deebot T20 OmniRoomba Combo j9+
| Deebot T20 Omni | Roomba Combo j9+ | Difference | |
|---|---|---|---|
| Height | 104 mm | 87 mm | +17 mm |
| Width / diameter | 362 mm | 348 mm | +14 mm |
| Length | 362 mm | 348 mm | +14 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is Deebot T20 Omni better than Roomba Combo j9+?
- Obstacle avoidanceAI camera + 3D structured light 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%
- Clean water tank (dock)4 l vs 3 l+33%
Why is Roomba Combo j9+ better than Deebot T20 Omni?
- Charging time390 min vs 180 min2.2×
- Height104 mm vs 87 mm+20%
- Dustbin (robot)300 ml vs 313 ml+4%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 6,000 Pa | — |
| Dustbin (robot) | 300 ml | 313 ml |
| Main brush | Single main brush | Dual main brushes |
| Side brushes | 2 | 1 |
| Carpet detection | Yes | Yes |
| Dirt detection | — | Yes |
| Noise level | 68 dB | — |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | — |
| Navigation sensors | LiDAR laser (LDS), Ultrasonic sensor | Cliff sensors |
| Obstacle avoidance | AI camera + 3D structured light | Basic sensors (infrared / bumper) |
| Threshold climbing | 20 mm | — |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Rotating mop pads | Mop pad |
| Mop lifting on carpets | Yes | Yes |
| Water tank (robot) | — | 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 l | — |
| Mop washing in the dock | Yes | — |
| Hot-water mop washing | Yes | — |
| Hot-air mop drying | Yes | — |
| Automatic water refill | — | Yes |
| Clean water tank (dock) | 4 l | 3 l |
| Dirty water tank (dock) | 4 l | — |
| Battery & runtime | ||
| Battery capacity | 5,200 mAh | 4,500 mAh |
| Runtime | 140 min | — |
| Charging time | 390 min | 180 min |
| Cleaning area per charge | 446 m² | — |
| Recharge & resume | Yes | Yes |
| Size & weight | ||
| Width / diameter | 362 mm | 348 mm |
| Length | 362 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, Built-in voice assistant | Amazon Alexa, Google Assistant, Apple Siri |
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