Nilfisk Liberty vs Stretch 4
Nilfisk vs Hello Robot — specs, price, and data-backed comparison.
SPECIFICATIONS COMPARED
| Nilfisk Liberty | Stretch 4 | |
|---|---|---|
| Company | Nilfisk | Hello Robot |
| Category | Ground | Ground |
| Price: | Not announced | Not announced |
| Released: | — | 2026 |
| Weight | ~180 kg | 46 kg |
| Degrees of Freedom | — | 9 |
| Battery Life | Up to 3.5 hours | — |
| Charging Time | ~3–4 hours | — |
| Connectivity | Wi-Fi Fleet monitoring system | — |
| Software / AI | Nilfisk autonomous navigation software | — |
Buying guides and prices
FREQUENTLY ASKED QUESTIONS
What is the difference between the Nilfisk Liberty and the Stretch 4?
Nilfisk Liberty is made by Nilfisk, while Stretch 4 is made by Hello Robot. Both are grounds, so the differences come down to price and specifications.