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- E4 vs V2
Roborock E4 vs Viomi V2
What E4 does better (2) and where V2 wins (2) — every spec side by side.
Why is E4 better than V2?
- Obstacle avoidanceAI camera vs Basic sensors (infrared / bumper)
- Dustbin (robot)640 ml vs 600 ml+7%
Why is V2 better than E4?
- NavigationCamera (vSLAM) vs Laser (LiDAR)
- Water tank (robot)180 ml vs 560 ml3.1×
Specifications
Side by side
| Suction & cleaning | ||
| Dustbin (robot) | 640 ml | 600 ml |
| Main brush | Single main brush | Single main brush |
| Side brushes | 1 | 1 |
| HEPA filter | Yes | Yes |
| Navigation & obstacles | ||
| Navigation | Camera (vSLAM) | Laser (LiDAR) |
| Navigation sensors | vSLAM camera | LiDAR laser (LDS), Cliff sensors |
| Obstacle avoidance | AI camera | Basic sensors (infrared / bumper) |
| Threshold climbing | 20 mm | 20 mm |
| No-go zones / virtual walls | — | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Water tank (robot) | 180 ml | 560 ml |
| Base station | ||
| Base station | Charging dock | Charging dock |
| Battery & runtime | ||
| Battery capacity | — | 3,200 mAh |
| Runtime | 120 min | — |
| Charging time | 360 min | — |
| Size & weight | ||
| Width / diameter | — | 350 mm |
| Length | — | 350 mm |
| Height | — | 94 mm |
| Weight | 3 kg | 3.3 kg |
| Shape | — | Round |
| Colours | Black | Grey |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant | — |
