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- RC4S vs D20 Ultra
Aeno RC4S vs Dreame D20 Ultra
What RC4S does better (2) and where D20 Ultra wins (7) — every spec side by side.
Dimensions
Size comparison
RC4SD20 Ultra
| RC4S | D20 Ultra | Difference | |
|---|---|---|---|
| Height | 98 mm | 104 mm | −6 mm |
| Width / diameter | 350 mm | 350 mm | = |
| Length | 350 mm | 350 mm | = |
| Weight | 2.7 kg | 3.9 kg | −1.2 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is RC4S better than D20 Ultra?
- Runtime250 min vs 230 min+9%
- Height98 mm vs 104 mm+6%
Why is D20 Ultra better than RC4S?
- Suction power4,000 Pa vs 13,000 Pa3.2×
- Mop typeMop pad vs Rotating mop pads
- Base stationAuto-empty dock vs All-in-one dock (empty + wash)
- Charging time270 min vs 210 min+29%
- Dustbin (robot)300 ml vs 320 ml+7%
- Dust bag (dock)3 l vs 3.2 l+7%
- Noise level68 dB vs 65 dB+5%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 4,000 Pa | 13,000 Pa |
| Dustbin (robot) | 300 ml | 320 ml |
| Main brush | Single main brush | Single main brush |
| Side brushes | 1 | 1 |
| Carpet detection | — | Yes |
| HEPA filter | Yes | Yes |
| Noise level | 68 dB | 65 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS) | LiDAR laser (LDS), Wall sensor, Cliff sensors, Ultrasonic sensor |
| Obstacle avoidance | Basic sensors (infrared / bumper) | Basic sensors (infrared / bumper) |
| Threshold climbing | 20 mm | 20 mm |
| No-go zones / virtual walls | Yes | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Mop pad | Rotating mop pads |
| Mop lifting on carpets | — | Yes |
| Mop lift height | — | 10.5 mm |
| Water tank (robot) | 300 ml | — |
| Base station | ||
| Base station | Auto-empty dock | All-in-one dock (empty + wash) |
| Auto-empty dust station | Yes | Yes |
| Dust bag (dock) | 3 l | 3.2 l |
| Mop washing in the dock | — | Yes |
| Hot-air mop drying | — | Yes |
| Automatic water refill | — | Yes |
| Clean water tank (dock) | — | 4.5 l |
| Dirty water tank (dock) | — | 4 l |
| Battery & runtime | ||
| Battery capacity | 5,200 mAh | 5,200 mAh |
| Runtime | 250 min | 230 min |
| Charging time | 270 min | 210 min |
| Cleaning area per charge | 300 m² | — |
| Recharge & resume | — | Yes |
| Size & weight | ||
| Width / diameter | 350 mm | 350 mm |
| Length | 350 mm | 350 mm |
| Height | 98 mm | 104 mm |
| Weight | 2.7 kg | 3.9 kg |
| Shape | Round | Round |
| Colours | White | White |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant, Apple Siri | Amazon Alexa, Google Assistant |
