Dreame Z1
#3 in CordlessFull review
A strong-value cordless robot for small-to-mid-size pools whose owners want long runtime and real navigation for about $300. Fine silt needs a robot with a finer filter.
Dreame $299$299
The Dreame Z1 is the better robotic pool cleaner overall, rated 4.3 to 3.2. The Dreame Z1 leads on value, cleaning and navigation. The Dreame Z1 costs $600 less ($299 vs $899).
Dolphin Liberty 200
#36 in CordlessFull review
A simple cordless robot for small pools whose owners want no cable and no app.
Maytronics $949 Leslie's $949 Walmart $899 ePoolSupply $899 Pool Express $999$899
Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Dreame Z1 for value ($299 vs $899), cleaning (Floor, walls and waterline vs Floor and walls) and navigation (Ultrasonic + 3D structured light vs Smart scanning).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every cordless robotic pool cleaner; a clear win is highlighted. How we rank explains each one.
| Factor weight | Dreame Z1 | Dolphin Liberty 200 |
|---|---|---|
| Overall rating | 4.3/5 | 3.2/5 |
| Value 25% | 92 $299 | 44 $899 |
| Cleaning 25% | 85 Floor, walls and waterline | 60 Floor and walls |
| Navigation 15% | 85 Ultrasonic + 3D structured light | 50 Smart scanning |
| Warranty 15% | 50 2-year warranty | 50 2-year warranty |
| Pool size 10% | 100 pools up to 1,950 sq ft | 27 pools up to 33 ft long (about 540 sq ft) |
| Features 10% | 50 too few features published (neutral score used) | 50 too few features published (neutral score used) |
Specifications
| Dreame Z1 | Dolphin Liberty 200 | |
|---|---|---|
| Pool | ||
| Pool size (rated) | Up to 1,950 sq ft (181 m²) | Up to 33 ft long |
| Pool types | - | In-ground and above-ground |
| Surfaces | - | Liner, gunnite, fiberglass |
| Cleaning | ||
| Cleans | Floor, walls and waterline | Floor and walls |
| Surface skimming | No | No |
| Filter | 180 µm filter basket | Combine Filter Kit, top access |
| Water flow | 8,000 gal/h | - |
| Power | ||
| Power | Cordless (battery) | Cordless (battery) |
| Battery | 194.4 Wh, 9,600 mAh | - |
| Run time | Up to 5 h | Up to 2 h 30 min |
| Charge time | 6 h | 6 h |
| Charging | Magnetic connector | Wireless/inductive |
| Navigation & app | ||
| Navigation | Ultrasonic + 3D structured light | Smart scanning |
| App | - | No |
| Build | ||
| Weight | 16.6 lb (7.5 kg) | 17.9 lb (8.1 kg) |
| Warranty | 2 years | 2 years |