Dolphin Liberty 700s Review

What is the Dolphin Liberty 700s?

The Dolphin Liberty 700s sits near the top of Maytronics' cordless lineup. Like the rest of the Liberty family it cleans without a cable or poolside power supply, but the 700s adds two things the entry models don't: a removable, rechargeable battery and solar charging — that's what the "s" stands for. Charge it, drop it in, and let it scrub and filter on its own.

In this in-depth review we'll walk through the 700s' swappable battery, its solar charging and app control, how it cleans, what's included, what it's missing, and who it's the right pool robot for in 2026.

Cordless Cleaning with a Swappable Battery

Every Liberty is cordless, but the 700s uses a replaceable lithium-ion battery. Where the Liberty 200, 300, and 400 have a fixed battery that must recharge before the next run, the 700s lets you swap a drained battery for a charged spare — so a bigger or dirtier pool never has to wait on a charge cycle. Pair that with a second battery and you can effectively clean back-to-back.

The robot self-parks at the nearest wall when it finishes, and LED lights show battery status. Each battery delivers roughly a 1.5-hour cleaning cycle.

Solar Charging and App Control

The standout on the 700s is solar charging. A solar option lets you top the battery up from the sun instead of relying only on a wall outlet — a natural fit for a cordless robot that lives outdoors next to a sunny pool. It leans into the efficiency story that makes robotic cleaners so appealing in the first place.

The 700s also adds smartphone app control, so you can start cycles and check battery status from your phone rather than pressing a button on the unit.

How the Liberty 700s Cleans

With two drive motors and active brushing, the Liberty 700s climbs and cleans both the floor and walls. It navigates around steps, ladders, drain covers, ledges, and pop-ups, and works on concrete, plaster, gunite, pebble, tile, vinyl liner, and fiberglass. It's rated for pools up to 50 ft.

As with any cordless cleaner, a battery can't push the same suction as a plugged-in motor, so the strongest scrubbing still belongs to corded models. What the 700s offers instead is convenience taken to its limit: no cable, a swappable battery, solar top-ups, and app control. Wall Climbing is a great feature, but don't confuse it with the superior waterline cleaning feature, which the Liberty 700s does not include.

Filtration: Top-Load Filter Basket

The Liberty 700s uses a large top-loading filter basket — lift the lid, pull the basket up, rinse, and drop it back in. It captures everyday leaves, bugs, and dirt easily; the very finest particles would call for a cleaner equipped with ultra-fine NanoFilters.

Energy Use and Running Cost

The 700s is a self-contained filtration system, so it doesn't rely on your pool's pump or a booster pump. Add solar charging on top of that and it's among the most energy-conscious ways to keep a pool clean — less wear on your equipment and minimal electricity to recharge.

What is the Dolphin Liberty 700s missing?

Waterline Cleaning

The Dolphin Liberty 700s does not include waterline cleaning. Without it, you'll still brush the waterline by hand to keep oils and scum from forming an algae ring. If waterline scrubbing matters to you, the Dolphin Premier does it for you.

NanoFilters and Fine Debris

The Liberty 700s filters with standard media rather than ultra-fine NanoFilters, and it isn't a ProLine or Max-Series machine. For the finest filtration and commercial-grade motor power, a ProLine cleaner such as the Dolphin Premier or a Max-Series model is the upgrade to consider.

No Leaf Bag

Like nearly every robot, the Liberty 700s has no leaf bag. If leaves are a heavy load, the Dolphin Premier is the one Dolphin with an oversized leaf bag, plus a 3-year warranty and dual commercial motors.

What's included with the Dolphin Liberty 700s?

The Dolphin Liberty 700s arrives ready to charge and clean. In the box you'll find:

• Dolphin Liberty 700s cordless unit
• Removable, rechargeable lithium-ion battery
• Solar charging and power adapter
• Top-load standard filter basket
• Manufacturer's Warranty

How to set up the Dolphin Liberty 700s

Setup is simple:

1. Charge the battery (via the charger or solar) until it shows a full status.
2. Seat the charged battery in the unit.
3. Lower the robot into the pool and start a cycle from the app or the power button.

There's no cord, no booster pump, and no assembly. With a removable battery and solar charging, you can keep a charged spare ready and let the sun help top off between runs.

Caring for the Battery and Off-Season Storage

Because the battery is removable, you can bring it indoors for the off-season. Charge and store batteries in a shaded, moderate-temperature space, and before winter leave them around half charge rather than empty or full. Store the unit somewhere cool and dry, and the lithium-ion batteries will stay healthy year after year.

Who Should Buy the Dolphin Liberty 700s?

The Liberty 700s is a great fit if:

• You want cordless cleaning without recharge downtime — the swappable battery keeps you going.
• Solar charging and app control appeal to you.
• You value the most convenient, cable-free experience in the Liberty range.

Consider another model if you need waterline scrubbing, NanoFiltration, or the maximum cleaning power of a corded unit.

Dolphin Liberty 700s vs. the Alternatives

Comparing the cordless Liberty range? Read our Dolphin Liberty 600 review and Dolphin Liberty 800s review, or step up to the flagship Dolphin Premier review. Curious how it compares to corded models? Our best robotic pool cleaners guide lays out the top picks.

The Bottom Line

The Dolphin Liberty 700s is cordless convenience with almost every box ticked: a swappable battery, solar charging, and app control, all cable-free. It still isn't built for waterline scrubbing or ultra-fine filtration — but for a hands-off, eco-minded way to keep a small-to-medium pool clean, the solar-powered 700s is one of the most feature-complete cordless robots you can buy.

Why buy the Liberty 700s from Poolbots?

No one knows robotic pool cleaners better than we do. With more than 25 years in the swimming pool industry and full Dolphin Authorized Dealer status, every robot we ship carries the full, non-prorated manufacturer's warranty, plus free shipping and our risk-free 30-Day Trial with NO restocking fee, ever.

Curious whether the solar-powered Liberty 700s is right for your pool? Compare it against the best robotic pool cleaners and reach out to our experts for honest, no-pressure advice.