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- L20 Ultra vs L40 Ultra
Dreame L20 Ultra vs Dreame L40 Ultra
What L20 Ultra does better (4) and where L40 Ultra wins (2) — every spec side by side.
Dimensions
Size comparison
L20 UltraL40 Ultra
| L20 Ultra | L40 Ultra | Difference | |
|---|---|---|---|
| Height | 104 mm | 104 mm | = |
| Width / diameter | 350 mm | 350 mm | = |
| Length | 350 mm | 350 mm | = |
Drawn to the same scale from the official dimensions (front and side).
Why is L20 Ultra better than L40 Ultra?
- Obstacle avoidanceAI camera + 3D structured light vs AI camera
- Runtime260 min vs 194 min+34%
- Battery capacity6,400 mAh vs 5,200 mAh+23%
- Noise level63 dB vs 74 dB+17%
Why is L40 Ultra better than L20 Ultra?
- Suction power7,000 Pa vs 11,000 Pa+57%
- Charging time270 min vs 210 min+29%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 7,000 Pa | 11,000 Pa |
| Dustbin (robot) | 300 ml | 300 ml |
| Main brush | Single main brush | Single main brush |
| Side brushes | 1 | 1 |
| Carpet detection | Yes | Yes |
| Dirt detection | Yes | Yes |
| HEPA filter | Yes | — |
| Noise level | 63 dB | 74 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Wall sensor | LiDAR laser (LDS), Wall sensor, Cliff sensors |
| Obstacle avoidance | AI camera + 3D structured light | AI camera |
| Threshold climbing | — | 22 mm |
| No-go zones / virtual walls | Yes | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Rotating mop pads | Rotating mop pads |
| Mop lifting on carpets | — | Yes |
| Mop lift height | — | 10.5 mm |
| Automatic mop removal | Yes | Yes |
| Extending mop (edges) | Yes | Yes |
| Water tank (robot) | 80 ml | 80 ml |
| Base station | ||
| Base station | All-in-one dock (empty + wash) | All-in-one dock (empty + wash) |
| Auto-empty dust station | Yes | Yes |
| Dust bag (dock) | 3.2 l | 3.2 l |
| Mop washing in the dock | Yes | Yes |
| Hot-water mop washing | — | Yes |
| Hot-air mop drying | Yes | Yes |
| Automatic water refill | Yes | Yes |
| Plumbed water connection | Yes | Yes |
| Clean water tank (dock) | 4.5 l | — |
| Dirty water tank (dock) | 4 l | — |
| Battery & runtime | ||
| Battery capacity | 6,400 mAh | 5,200 mAh |
| Runtime | 260 min | 194 min |
| Charging time | 270 min | 210 min |
| Recharge & resume | — | Yes |
| Size & weight | ||
| Width / diameter | 350 mm | 350 mm |
| Length | 350 mm | 350 mm |
| Height | 104 mm | 104 mm |
| Weight | 4.3 kg | — |
| Shape | Round | Round |
| Colours | White | White |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant | Amazon Alexa, Google Assistant, Apple Siri |
| Live camera view / video call | — | Yes |
| Remote control | Yes | — |
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