Quick Answer: For most pool owners, a corded Dolphin is the smarter buy — the Nautilus CC Plus ($800) and Premier ($1,500) clean at full strength for as long as you set the timer and cost far less than a flagship Beatbot AquaSense 2 Ultra (~$2,199–$2,999). Choose Beatbot only if you want a fully cordless robot with smart navigation, surface skimming, and a water-clarification system — and you’ll accept a 2–5 hour battery cycle and daily charging. Bottom line: Beatbot wins on cordless convenience and features; Dolphin wins on sustained power, filtration, and price.
Beatbot and Dolphin sit at opposite ends of the robotic pool cleaner market. Dolphin (made by Maytronics) is the established corded workhorse; Beatbot is the premium cordless newcomer betting that pool owners will pay double to ditch the cord. Here’s how they actually compare in 2026.
Beatbot vs Dolphin at a glance
| Beatbot (AquaSense 2 Ultra) | Dolphin (Premier / CC Plus) | |
|---|---|---|
| Power | Cordless (rechargeable battery) | Corded (low-voltage transformer) |
| Typical price | ~$2,199–$2,999 | ~$800 (CC Plus) – $1,500 (Premier) |
| Runtime | 2–5 hr per charge, then recharge | Unlimited — runs until timer ends |
| Cleaning modes | 5-in-1: floor, walls, waterline, surface skim, water clarification | Floor + walls (+ waterline on Premier) |
| Filtration | Multi-layer fine filter | NanoFiltration on Premier (captures finer particles) |
| Daily effort | Lift out + dock + recharge every use | Drop in, run, lift out — no charging |
| Best for | Cordless convenience + surface skimming | Sustained power, value, fine filtration |
By the numbers
- Price gap: The Dolphin Premier retails for about $1,500, while the Beatbot AquaSense 2 Ultra runs roughly $2,199–$2,999 — nearly double for the flagship. The entry corded Dolphin Nautilus CC Plus is just ~$800, a third of the Ultra’s price.
- Suction power: According to Beatbot, the AquaSense 2 Ultra’s NonaDrive 9-motor system delivers up to 5,500 gallons per hour of suction — impressive for a cordless unit, though reviewers at The Pool Nerd note cordless suction still fades as the battery drains, unlike a corded Dolphin that holds full strength.
- Battery vs unlimited runtime: Every Beatbot is cordless, with testers at The Pool Nerd reporting roughly a 2–3 hour working cycle before a multi-hour recharge; a corded Dolphin “cleans at full strength for as long as you set the timer — no battery fade,” per the same head-to-head testing.
- Pool-size rating: Maytronics rates the Dolphin Nautilus CC Plus for inground pools up to 40 ft in length, covering most residential pools in a single cycle (per the manufacturer’s current Amazon listing).
- Editorial verdict: The Dolphin Premier was named Best Pool Robot for 2026 by USA Today, and The Pool Nerd estimates about 90% of owners who ask for a recommendation end up happier with a corded Dolphin Premier or Sigma than with the pricier cordless Beatbot.
Beatbot: the premium cordless option
Beatbot AquaSense 2 Ultra
- Fully cordless — no hose or cable to tangle or trip over.
- 5-in-1: floor, walls, waterline, surface skimming, and water clarification.
- 9-motor NonaDrive system rated up to 5,500 GPH suction.
- App-based smart navigation and scheduling.
Beatbot’s pitch is convenience and features. Without a cord, there’s nothing to untangle, and the AquaSense 2 series adds tricks no corded Dolphin matches — it skims floating debris off the surface and runs a water-clarification cycle on top of normal floor and wall cleaning. If you’ve decided you want a fully cordless robot, our best cordless robotic pool cleaner guide ranks the top options, and our best Beatbot pool cleaner guide breaks down each AquaSense model. The catch: you’ll pay $2,000+, recharge between cleans, and lift the robot out to dock it after each use.
Dolphin: the corded value champion
Dolphin Nautilus CC Plus
- Corded power — full suction for the entire cycle, no battery fade.
- Dual active brushes scrub floor and walls; Premier adds waterline.
- Wi-Fi scheduling and easy top-load filter basket.
- Rated for inground pools up to 40 ft; runs on pennies per cycle.
Dolphin (Maytronics) is the most established robotic-cleaner brand, and corded power is its quiet advantage: the robot pulls full suction for the entire cycle and never needs charging. Step up to the Dolphin Premier (~$1,500) and you add active waterline scrubbing plus the NanoFiltration system that captures finer particles than Beatbot managed in testing. For a full ranking of the lineup from the budget E10 to the flagship Sigma, see our best Dolphin pool cleaner guide, or compare every robot type in our best robotic pool cleaner guide.
Which should you buy?
- Choose Dolphin if: you want the best cleaning-per-dollar, sustained full-power suction, and fine filtration without recharging — and you don’t mind a (low-voltage) cord. This fits the large majority of pool owners.
- Choose Beatbot if: a fully cordless robot is a must-have, you value surface skimming and water clarification, and the $2,000+ price plus daily charging routine don’t bother you.
- Either way: match the robot to your pool size and surface, and budget for replacement filters and the occasional service part.
If you’d rather see how robotic cleaners stack up against suction and pressure models before committing to a brand, our best automatic pool cleaner guide compares all three technologies side by side.
The bottom line
For most pools in 2026, a corded Dolphin is the better robot — full-strength suction, excellent filtration, and roughly half the price of the cordless competition. Beatbot’s AquaSense 2 Ultra earns its keep only for buyers who genuinely want cordless freedom plus surface skimming and water clarification, and will accept the premium price and daily charging that come with it. Decide by how much you value the cordless experience versus raw cleaning value.