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- E20 vs RCF 3
eufy E20 vs Kärcher RCF 3
What E20 does better (5) and where RCF 3 wins (1) — every spec side by side.
Dimensions
Size comparison
E20RCF 3
| E20 | RCF 3 | Difference | |
|---|---|---|---|
| Height | 118 mm | 120 mm | −2 mm |
| Width / diameter | 350 mm | 340 mm | +10 mm |
| Length | 350 mm | 340 mm | +10 mm |
| Weight | 2.2 kg | 4.5 kg | −2.2 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is E20 better than RCF 3?
- Runtime180 min vs 120 min+50%
- Base stationAuto-empty dock vs Charging dock
- Threshold climbing20 mm vs 15 mm+33%
- Cleaning area per charge140 m² vs 80 m²+75%
- Charging time150 min vs 180 min+20%
Why is RCF 3 better than E20?
- Battery capacity4,200 mAh vs 5,200 mAh+24%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 8,000 Pa | — |
| Dustbin (robot) | 365 ml | — |
| Main brush | Single main brush | — |
| Anti-tangle brush | Yes | — |
| Side brushes | 1 | — |
| Carpet detection | — | Yes |
| Noise level | 75 dB | — |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Cliff sensors | LiDAR laser (LDS), Cliff sensors, Ultrasonic sensor |
| Obstacle avoidance | Basic sensors (infrared / bumper) | Basic sensors (infrared / bumper) |
| Threshold climbing | 20 mm | 15 mm |
| No-go zones / virtual walls | Yes | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | — | Roller mop |
| Base station | ||
| Base station | Auto-empty dock | Charging dock |
| Auto-empty dust station | Yes | — |
| Dust bag (dock) | 3 l | — |
| Battery & runtime | ||
| Battery capacity | 4,200 mAh | 5,200 mAh |
| Runtime | 180 min | 120 min |
| Charging time | 150 min | 180 min |
| Cleaning area per charge | 140 m² | 80 m² |
| Size & weight | ||
| Width / diameter | 350 mm | 340 mm |
| Length | 350 mm | 340 mm |
| Height | 118 mm | 120 mm |
| Weight | 2.2 kg | 4.5 kg |
| Shape | Round | Round |
| Colours | Black | White, Black |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant, Apple Siri | — |
