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- J20 vs S8 MaxV Ultra
Eureka J20 vs Roborock S8 MaxV Ultra
What J20 does better (5) and where S8 MaxV Ultra wins (5) — every spec side by side.
vs
4.8Cleaning power5.5
8.8Navigation7.8
3.9Mopping7.8
8.4Base station7.2
6.9Battery7.5
Why is J20 better than S8 MaxV Ultra?
- Water tank (robot)250 ml vs 100 ml2.5×
- Battery capacity6,400 mAh vs 5,200 mAh+23%
- Threshold climbing22 mm vs 20 mm+10%
- Dust bag (dock)3 l vs 2.5 l+20%
- Noise level65 dB vs 67 dB+3%
Why is S8 MaxV Ultra better than J20?
- Mop typeMop pad vs Vibrating / sonic mop
- Runtime130 min vs 180 min+38%
- Suction power8,000 Pa vs 10,000 Pa+25%
- Dustbin (robot)220 ml vs 270 ml+23%
- Clean water tank (dock)3.5 l vs 4 l+14%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 8,000 Pa | 10,000 Pa |
| Dustbin (robot) | 220 ml | 270 ml |
| Main brush | Single main brush | Dual main brushes |
| Side brushes | 1 | 1 |
| Extending side brush | — | Yes |
| Carpet detection | Yes | Yes |
| Dirt detection | — | Yes |
| HEPA filter | Yes | — |
| Noise level | 65 dB | 67 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Wall sensor, Cliff sensors | LiDAR laser (LDS), Wall sensor, Cliff sensors |
| Obstacle avoidance | AI camera | AI camera |
| Threshold climbing | 22 mm | 20 mm |
| No-go zones / virtual walls | Yes | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Mop pad | Vibrating / sonic mop |
| Mop lifting on carpets | — | Yes |
| Mop lift height | — | 20 mm |
| Extending mop (edges) | — | Yes |
| Water tank (robot) | 250 ml | 100 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 l | 2.5 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) | 3.5 l | 4 l |
| Dirty water tank (dock) | 3.5 l | — |
| Battery & runtime | ||
| Battery capacity | 6,400 mAh | 5,200 mAh |
| Runtime | 130 min | 180 min |
| Charging time | — | 240 min |
| Cleaning area per charge | 300 m² | 300 m² |
| Recharge & resume | — | Yes |
| Size & weight | ||
| Width / diameter | — | 353 mm |
| Length | — | 353 mm |
| Height | — | 103 mm |
| Shape | — | Round |
| Colours | Black | Black |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant, Apple Siri | Amazon Alexa, Google Assistant, Apple Siri |
| Live camera view / video call | — | Yes |
| Remote control | — | Yes |
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