Quick Answer: The Dolphin Liberty 300 is Maytronics’ cordless, battery-powered robotic pool cleaner, officially priced at $1,249 (Maytronics.com) to $1,199 (Royal Swimming Pools) — noticeably higher than the ~$999 figure this site previously cited for it. It scrubs floor, walls, waterline, and sun ledge on a 2.5-hour cycle, rated for pools up to 33 feet, with a 2-year warranty and no app control. It’s the cordless pick in Dolphin’s lineup, but the higher current price narrows the gap with premium corded models that clean bigger pools for less.
Dolphin’s cordless robots solve the one complaint every corded pool cleaner shares — a cable to manage, untangle, and store. The Liberty 300 is the mid-tier entry in that cordless line, and it’s been referenced across this site’s Dolphin coverage for months without its own dedicated page. Pricing it out against Maytronics’ own current listing turned up a real gap between what this site had been quoting and what Maytronics actually charges today.
Dolphin Liberty 300 at a glance
| Spec | Dolphin Liberty 300 (2026) |
|---|---|
| Type | Cordless, battery-powered robotic pool cleaner |
| Cleans | Floor, walls, waterline, and sun ledge |
| Max pool length | 33 ft |
| Default cycle time | 2.5 hours |
| Charging | Magnetic-Connect inductive charging |
| Filter | Combine Filter Kit, with ultra-fine filter option |
| Modes | Cycle Selector (floor-only or floor+walls), Eco Mode, Click-Up sound-activated retrieval |
| App control | No — manual start only |
| Weight | 17.9 lbs |
| Warranty | 2 years |
| Price | $1,199 (Royal Swimming Pools) to $1,249 (Maytronics.com) |
Dolphin Liberty 300
- Cleans floor, walls, waterline, and sun ledge in one 2.5-hour cycle — no cord to manage.
- Magnetic-Connect inductive charging and Click-Up sound-activated retrieval for hands-off handling.
- Rated for pools up to 33 ft — smaller than the corded Nautilus CC Plus's 50-ft rating, at a higher price.
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By the numbers
- Official price: $1,249 on Maytronics’ own US store, confirmed against a second retailer (Royal Swimming Pools) at $1,199 — both well above the roughly $999 figure this site’s earlier Dolphin coverage had quoted for the Liberty 300.
- Cycle time: 2.5 hours per Maytronics’ spec page, covering the full floor-walls-waterline-sun-ledge routine on a single charge.
- Pool size ceiling: 33 feet maximum length — smaller than the corded Nautilus CC Plus’s 50-ft rating, despite the Liberty 300 costing roughly $450-500 more.
- Weight: 17.9 lbs, light enough for one-person Click-Up removal without a caddy or lift-assist.
What it does well
No cable, no power supply setup. Drop it in, let the 2.5-hour cycle run, and lift it out — there’s no cord to untwist, no swivel to maintain, and no power supply box to position poolside before each run.
Full floor-walls-waterline-sun-ledge coverage. Per Maytronics’ current spec page, the Liberty 300 handles the waterline and sun ledge on top of floor and walls — a fuller cleaning routine than some earlier third-party writeups gave it credit for.
Click-Up retrieval. The sound-activated Click-Up feature calls the robot to a spot you can reach without wading in or fishing for a handle, a genuine convenience upgrade over a purely manual lift-out.
Where it falls short
- Real price increase. At $1,199-$1,249, the Liberty 300 now costs noticeably more than the ~$999 this site had previously quoted — worth knowing before you budget against an older number you may have seen elsewhere on this site or another.
- Smaller pool rating than cheaper corded models. 33 feet is a real ceiling; the corded Nautilus CC Plus covers pools up to 50 feet for roughly $450-500 less.
- No app control. Unlike Maytronics’ WiFi-enabled models (e.g. the Sigma), the Liberty 300 has no scheduling or remote-start — you start each cycle manually.
- 2.5-hour cycle, then recharge. A single charge covers one full cleaning session; plan the recharge window ahead of your next scheduled clean rather than expecting back-to-back cycles.
Dolphin Liberty 300 vs the corded alternative
| Model | Cable | Max pool size | Waterline | Price |
|---|---|---|---|---|
| Dolphin Liberty 300 | Cordless | 33 ft | Yes | $1,199-$1,249 |
| Dolphin Nautilus CC Plus | Corded | 50 ft | Yes | about $749 |
| Dolphin Liberty 200 | Cordless | Smaller than 300 | Not independently confirmed here | Below Liberty 300 |
| Dolphin Liberty 400 | Cordless | Larger than 300 | Yes | Above Liberty 300 |
The clearest trade-off here isn’t between brands, it’s between cable and battery within Dolphin’s own lineup: the corded Nautilus CC Plus covers a bigger pool for hundreds less, while the Liberty 300 sells convenience — no cord, no power-supply setup — at a real premium. See how the whole Dolphin range stacks up in our best Dolphin pool cleaner guide, or weigh cordless options across brands in our best cordless robotic pool cleaner guide.
Who should buy the Dolphin Liberty 300
Buy it if you specifically want to be rid of a power cable — awkwardly shaped pools, cord-tripping hazards near the deck, or simply not wanting to run a cable across the patio are all legitimate reasons — and your pool is 33 feet or under.
Skip it if your pool is longer than 33 feet (it isn’t rated for it), or if $1,199-$1,249 is more than you want to spend on a cordless upgrade — the corded Nautilus CC Plus covers more pool for meaningfully less money. If the battery itself ever needs replacing, our Dolphin pool cleaner troubleshooting guide covers when that repair costs more than a new unit.
The bottom line
The Dolphin Liberty 300 is a capable cordless cleaner — floor, walls, waterline, and sun ledge in one 2.5-hour cycle, no cable to manage — but it now costs $1,199-$1,249, well above the ~$999 this site’s earlier coverage had cited. That price puts it within a few hundred dollars of Dolphin’s premium corded models while covering a smaller 33-ft pool. It’s the right buy for cord-haters with a mid-size pool; everyone else gets more pool coverage for less money by staying corded. Compare it against the rest of the lineup in our best Dolphin pool cleaner guide.