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Waterpik Cordless Advanced Water Flosser Review: Would Owners Buy It Again?

Disclosure: As an Amazon Associate I earn from qualifying purchases. If you buy through links on this page we may earn a commission at no extra cost to you. How this review was made: We did not test this flosser in person. This verdict is based on our analysis of expert reviews, a ranking aggregator and owner complaint themes, all listed at the end of this article. Expert opinion is split on battery reliability, and we say so below. Our method.

Repeat

One of the best cordless flossers, with battery and tank caveats

Electric Teeth gave the Cordless Advanced five stars after hands-on use, praising its cleaning, comfortable grip and easy nozzle rotation, and it ranks #2 of 13 power flossers on ReviewFinder, behind the countertop Aquarius. Several outlets name it best overall or best cordless. The pushback comes from Dentaly, which advises against it over battery complaints and a tank that is hard to clean. If you need a cordless or travel flosser it is a strong pick; if it never leaves your bathroom, a countertop model gives more pressure and no battery to wear out.

Check current price on Amazon → Prices and availability change often, so we don't list them here.

Buy it again if you…

  • want a water flosser without a plug or counter space
  • travel or want to floss in the shower
  • find string floss hard to use consistently

Skip it if you…

  • want the strongest pressure and longest sessions
  • want a battery that can be replaced
  • only floss at home and have room for a countertop unit

This review summarizes user experiences and is not medical or dental advice. If you have gum disease, bleeding gums, implants, braces or other dental work, ask your dentist or hygienist how to use a water flosser safely.

The Waterpik Cordless Advanced (model WP-560) is a rechargeable, handheld water flosser with three pressure settings, a 7 oz reservoir, a magnetic charger and four tips. It carries the ADA Seal of Acceptance, according to Dentaly.

We looked at hands-on expert reviews, a ranking aggregator and owner complaint themes to see how it holds up after months of use.

What owners say, at a glance

45-75 PSIacross three pressure settingsElectric Teeth
7 oztank, about 45 seconds on highElectric Teeth
~6 weeksper charge with once-daily use on highElectric Teeth
Cleaning results
Strong praise
Grip and handling
Strong praise
Portability
Strong praise
Tank size and cleaning
Common complaint
Long-term battery reliability
Common complaint

Bars show our editorial summary of how consistently owners praise or complain about each area across all sources — not a lab measurement.

The key specs

Pressure3 settings, about 45 to 75 PSI
Reservoir7 oz, about 45 seconds on high, 65 on low
BatterySealed lithium-ion, about 4 weeks claimed
ChargingMagnetic charger with USB-A cable
Tips included2 classic jet, 1 orthodontic, 1 Plaque Seeker
Water resistanceShower-safe
Warranty2 years, per Electric Teeth

What owners love

It cleans well.Electric Teeth was impressed by how much debris and plaque it removed from between the teeth.
Comfortable to hold.The same reviewer called the textured grip the most comfortable they had used, with the easiest one-finger nozzle rotation of any cordless model tested.
Long battery life.Electric Teeth got about six weeks per charge flossing once a day on high, beating the claimed four weeks.
Travel- and shower-friendly.It is cordless, water-resistant and comes with a travel pouch.

What owners complain about

Battery problems over time.Dentaly calls the battery the most frequent complaint, citing owner reports of weakening pressure and failures within months. The battery cannot be replaced.
Small tank.The 7 oz reservoir runs out before a full minute on high, so many users refill mid-session.
Hard to keep clean.Dentaly cites owners who found mold in the tank and hose, and one who broke the tank door while removing it.
Less power than countertop models.It tops out around 75 PSI, below Waterpik's plug-in units.

How it holds up over time

This is where the evidence splits. Electric Teeth had a good experience but noted user feedback raising long-term battery concerns it could not confirm. Dentaly rated the charger and battery 2 out of 5 for that reason. The two-year warranty matters here, so keep your receipt.

Tips from owners

  • Start on low pressure and move up as your gums get used to it.
  • Empty and air-dry the tank after each use to prevent buildup.
  • Floss in the shower to avoid splashing.
  • Replace jet tips about every six months, as Electric Teeth suggests.

Pros and cons

What owners love

  • Strong cleaning in expert testing
  • Comfortable, grippy handle
  • Long time between charges
  • Cordless and shower-safe
  • Travel pouch and four tips included

What owners complain about

  • Battery is sealed and not replaceable
  • Small tank needs refills
  • Tank can be hard to clean
  • Lower pressure than countertop models
  • Fairly loud and bulky charger

Other options owners compare

These are the Waterpik models most often compared with the Cordless Advanced.

ModelStyleConsider it if…
Waterpik Cordless Advanced (this review)Cordless, handheldYou want a portable flosserSee on Amazon
Waterpik Aquarius WP-660
Read our review
CountertopYou want more pressure and a big tank at homeSee on Amazon
Waterpik Cordless Gem 5100Compact cordlessYou want a smaller cordless optionSee on Amazon

Want a water flosser you can use anywhere?

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Frequently asked questions

How long does the battery last?

Waterpik claims about four weeks. Electric Teeth got about six weeks flossing once a day on high.

Can I replace the battery?

No. The battery is sealed, which is why long-term battery complaints matter.

Is it as strong as the Aquarius?

No. It tops out around 75 PSI, while countertop models go higher, and its tank is much smaller.

Can I use it in the shower?

Yes. It is water-resistant and designed to be shower-safe.

Sources we analyzed

Figures reflect each source as of October 13, 2026 and may change. We summarize owner feedback in our own words and do not reproduce retailer reviews.