WYBOT S2 Vision
#17 in CordlessFull review
WYBOT’s biggest-battery robot with a camera, for very large pools with lots of debris. Most people are better off with the cheaper S2 or C2 Vision.
Amazon $899.99$899.99
The WYBOT S2 Vision is the better robotic pool cleaner overall, rated 4.0 to 3.2. The WYBOT S2 Vision leads on cleaning and navigation.
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 WYBOT S2 Vision for cleaning (Floor, walls and waterline vs Floor and walls) and navigation (AI camera 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 | WYBOT S2 Vision | Dolphin Liberty 200 |
|---|---|---|
| Overall rating | 4.0/5 | 3.2/5 |
| Value 25% | 44 $900 | 44 $899 |
| Cleaning 25% | 85 Floor, walls and waterline | 60 Floor and walls |
| Navigation 15% | 85 AI camera | 50 Smart scanning |
| Warranty 15% | 50 2-year warranty | 50 2-year warranty |
| Pool size 10% | 100 pools up to 3,230 sq ft | 27 pools up to 33 ft long (about 540 sq ft) |
| Features 10% | 100 2 of 2 | 50 too few features published (neutral score used) |
Specifications
| WYBOT S2 Vision | Dolphin Liberty 200 | |
|---|---|---|
| Pool | ||
| Pool size (rated) | Up to 3,229 sq ft (300 m²) | Up to 33 ft long |
| Pool types | In-ground and above-ground | In-ground and above-ground |
| Surfaces | - | Liner, gunnite, fiberglass |
| Cleaning | ||
| Cleans | Floor, walls and waterline | Floor and walls |
| Surface skimming | No | No |
| Filter | - | Combine Filter Kit, top access |
| Filter capacity | 6 L | - |
| Power | ||
| Power | Cordless (battery) | Cordless (battery) |
| Battery | 7,800 mAh, 25.2 V | - |
| Run time | Up to 3 h 30 min | Up to 2 h 30 min |
| Charge time | 3 h | 6 h |
| Charging | - | Wireless/inductive |
| Navigation & app | ||
| Navigation | AI camera | Smart scanning |
| App | Yes | No |
| Scheduling | Yes | - |
| Build | ||
| Weight | - | 17.9 lb (8.1 kg) |
| Warranty | 2 years | 2 years |