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- J15 Max Ultra vs RVM 4 Comfort
Eureka J15 Max Ultra vs Kärcher RVM 4 Comfort
What J15 Max Ultra does better (4) and where RVM 4 Comfort wins (2) — every spec side by side.
vs
8.6Cleaning power7.7
9.4Navigation8.5
8.2Mopping7.8
6.8Base station4.6
4.8Battery6.6
Dimensions
Size comparison
J15 Max UltraRVM 4 Comfort
| J15 Max Ultra | RVM 4 Comfort | Difference | |
|---|---|---|---|
| Height | 110 mm | 100 mm | +10 mm |
| Width / diameter | 355 mm | 350 mm | +5 mm |
| Length | 355 mm | 350 mm | +5 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is J15 Max Ultra better than RVM 4 Comfort?
- Suction power22,000 Pa vs 15,000 Pa+47%
- Battery capacity6,400 mAh vs 5,200 mAh+23%
- Clean water tank (dock)4 l vs 2.5 l+60%
- Dust bag (dock)3 l vs 2.3 l+30%
Why is RVM 4 Comfort better than J15 Max Ultra?
- Runtime75 min vs 160 min2.1×
- Height110 mm vs 100 mm+10%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 22,000 Pa | 15,000 Pa |
| Main brush | — | Single main brush |
| Side brushes | 1 | 1 |
| Extending side brush | Yes | — |
| Carpet detection | Yes | Yes |
| Noise level | 67 dB | 66 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Cliff sensors | LiDAR laser (LDS), Wall sensor, Cliff sensors, Ultrasonic sensor |
| Obstacle avoidance | AI camera | AI camera |
| Threshold climbing | 45 mm | — |
| No-go zones / virtual walls | Yes | — |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Rotating mop pads | Rotating mop pads |
| Mop lifting on carpets | Yes | Yes |
| Mop lift height | 12 mm | — |
| Extending mop (edges) | Yes | Yes |
| 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 l | 2.3 l |
| Mop washing in the dock | Yes | Yes |
| Hot-water mop washing | Yes | — |
| Hot-air mop drying | Yes | Yes |
| Automatic water refill | Yes | Yes |
| Clean water tank (dock) | 4 l | 2.5 l |
| Dirty water tank (dock) | 3.4 l | 3 l |
| Battery & runtime | ||
| Battery capacity | 6,400 mAh | 5,200 mAh |
| Runtime | 75 min | 160 min |
| Charging time | — | 230 min |
| Size & weight | ||
| Width / diameter | 355 mm | 350 mm |
| Length | 355 mm | 350 mm |
| Height | 110 mm | 100 mm |
| Weight | — | 3.8 kg |
| Shape | Round | Round |
| Colours | White | White |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant, Apple Siri | — |
| Live camera view / video call | Yes | — |
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