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Best Cordless Water Flosser 2021

Medically Reviewed By: Dr. Gemma Wheeler

(GDC Number: 259369)

Tank of cordless water flosser being opened.

The use of a water flosser can reduce the existence of bleeding of gums by up to 93%.

A water flosser is a more gentle, comfortable and convenient way than the traditional flossing that your dentist always goes on about.  In fact, water flossers reach areas of the mouth normal flossing can’t.

There is a problem though; many water flossers need mains power which means you are potentially restricted in term of where and when you use it.

Thankfully the cordless water flosser exists and after hours of research and testing, we can conclusively tell you which are the best and why.

Below is our list of recommendations, what we like about each flosser and why, plus a link to a more detailed review in case you want more information. 

Later on in this post, we also include a buyer’s guide with a full explanation of water flosser and their features.

The article is broken up into several sections:

Best Cordless Water Flosser 2021 1
Waterpik WP-560
  • Interchangeable tips
  • 3 pressure settings
  • Good sized tank
view on amazon →
Best Cordless Water Flosser 2021 2
Sonicare Airfloss
  • Simple to use
  • Portability
  • Battery life
check best price →
Best Cordless Water Flosser 2021 3
Fairywill 5020E
  • Large 300ml tank
  • 3 pressure settings
  • Fantastic value
view on amazon →
Best Cordless Water Flosser 2021 4
H2ofloss HF-6 Mini
  • Collapsible
  • 5 pressure settings
  • USB charging
view on amazon →
Best Cordless Water Flosser 2021 5
Colgate Rechargeable Water Flosser
  • Collapsible
  • 4 week battery life
  • 3 pressure settings
check best price →

Our Top 5 Picks For Best Cordless Water Flosser

In the sections below you can read a little more about each water flosser and the reason we have included it.

1. Waterpik WP-560 Cordless

Short review: No need to be bound by wires with the WP-560, this is a cordless flosser that has been approved by the ADA.

The 360 degree rotating nozzle allows for excellent access to all areas of the mouth.

3 different flossing tips are included and 3 pressure settings allow up to 45 seconds of usage time from a full tank,

A new magnetic rapid charge system ensures you can easily recharge the unit when required too.

For those that travel a pouch is included too.

It is available in Blue colour only (WP-563) from Waterpiks Singapore distributor duro.com. It is also very expensive at S$288.

Other colour options do exist.

  • Pearly White – WP-560
  • Brilliant Black – WP-562
  • Classic Blue – WP-563
  • Radiant Orchid – WP-565
  • Rose Gold – WP-569

You can import it from the USA via Amazon for a little less. Just be aware you will need a voltage and plug converter.

  • What we like
    • Trusted brand
    • Cordless
    • Interchangeable tips
    • 3 pressure modes
    • Good sized tank
    • Easy charging
  • What we dislike
    • Price
Preview Product Rating Price
Waterpik Cordless Advanced Waterpik Cordless Advanced 9,209 Reviews 94.63S$

2. Sonicare Airfloss Ultra

Short review: Perhaps not strictly a waterflosser, the Airfloss uses a combination of water and air to achieve a similar effect but delivers short sharp bursts getting in between teeth.

What makes it so good and desirable is the much smaller profile, it’s cordless, really easy to use and can achieve a clean in 30 seconds. It makes for effortless everyday use.

The Pro offers different power settings and a large reservoir.

Whilst the AirFloss is actually our preferred go to flosser, clinical studies show Waterpik models are better.

You can buy from Philips, Best Denki, Lazada, Shopee and Gain City.

  • What we like
    • Simplicity of use
    • Less messy and takes less getting used to
    • Various settings
    • Design
    • Portability
    • Battery life
  • What we dislike
    • Targets only in between teeth rather than along the whole gumline
    • Small tank

3. Fairywill 5020E Portable Water Flosser

Short review: Fairywill have made a name for themselves in the electric toothbrush market offering good value products.

The Chinese company have now taken that approach to the water flosser market.

I make no excuses in saying that it doesn’t feel in hand as good as some other units, notably those from Waterpik.  Nor is there the extensive clinical backing.

However, the 5020E is a functional piece of kit that offers 3 flossing modes, clean, soft and massage.  I think scientifically it probably cleans nearly as well as Waterpik.

You get 8 jet tips included in the box which represents excellent value for money.

The 300ml tank is basically double most other cordless flossers available today. You can complete a full floss of the mouth without needing to refill the water tank.

The rechargeable battery lasts up to 21 days on a single charge. It takes just 4 hours to recharge via the provided USB cable. Unfortunately, the port cover required for the flosser is small, fiddly and easily lost. It is a small complaint really.

  • What we like
    • Good value
    • 3 modes
    • Good sized 300ml tank
    • USB charging
  • What we dislike
    • Quality could be better
    • Port cover for charger
Preview Product Rating Price
Fairywill 5020E Cordless Water Flosser Fairywill 5020E Cordless Water Flosser No ratings yet 81.59S$

4. H2ofloss HF-6 Mini

Short review: H2ofloss may not be a household name, but they are gradually building themselves a solid reputation in the water flosser market.

Key to that success if exceptional value for money. The HF-6 Mini is no exception.

What stands out about this model is the collapsible design, making it a real must for those frequently on the go and traveling.

Lovely and compact, this measures just 5.9 inches by 2.36 inches when collapsed.

Admittedly that compact size excludes the nozzles and USB charging cable, but they don’t take up much space. All of these things can be stored in the provided drawstring pouch.

The HF-6 comes with 5 different nozzle attachments, 2 of which are the classic jet tip style. All can rotate 360 degrees.

When expanded the tanks size is 200ml, which is a little smaller than is ideal, but it is functional.

A rechargeable lithium battery is built into the flosser and is recharged via the provided USB cable.

You will get up to 15 days from the battery when using it on the highest power setting of the 5 available.

A dedicated mode button changes the power and LEDs on the unit make it clear which is selected.

This is a fantastic product.

  • What we like
    • Good value
    • 5 pressure settings
    • Collapsible
    • Multiple tips included
    • USB charging
  • What we dislike
    • Small tank
    • Quality could be better
Preview Product Rating Price
H2ofloss HF-6 Mini H2ofloss HF-6 Mini 219 Reviews 54.06S$

5. Colgate Rechargeable Water Flosser

Short review:  This compart and portable water flosser is great for those who travel.

The 140ml water tank gives up to 50 seconds of use and collapses down to make for easy transportation.

Included is a travel pouch to help protect it when not in use.

Available in 2 colours, each flosser comes with 2 nozzles that can easily be removed and stored within the unit itself..

There are 3 modes, gentle, regular and pulse clean away debris and plaque along the gumline effectively.

A rechargeable battery is built into the unit and on a single charge you should achieve 4 weeks of battery life.

You can buy from Shopee.

  • What we like
    • 3 modes
    • 2 colour options
    • Price
    • Compact design
    • Battery life
  • What we dislike
    • Smallish tank
    • Lmited availability

Why should you listen to us?

Electric Teeth is an independent website with a mission to simplify dental health.

Our team is a mixture of consumers and dental professionals.

We strive to create honest, informative content, telling you the facts, good or bad.

We are not sponsored by big brands or healthcare companies. Our site is funded by affiliate revenue and ads, but we only recommend products that we have tested and truly believe to be worth your money.

Why not watch this short video to find out all about us?

Cordless Water Flosser Buyer’s Guide

Corded water flossers are better (for some)

Right, let’s not mess about here.

From a scientific, everyday-use and results perspective you are going to get the best experience from the larger, bulkier and mains hogging countertop water flossers.

They will normally offer more features such as variable pressure settings and larger water tanks that ultimately affect your user experience.

But, the cordless and wire free options are good enough for the vast majority of us and still bring significant benefit.

If you are more interested in countertop / corded flossers, check out this article.

Best Cordless Water Flosser 2021 6

What is a cordless water flosser?

A cordless or portable water flosser is an oral hygiene product that is powered from built-in batteries.

When switched on, the batteries power the pump that draws water from the refillable tank/reservoir and pushes this out at pressure via a nozzle you align with your gumline.

The water dislodges food particles, bacteria and plaque both on and underneath the gums, that was not removed through regular brushing to leave you with a cleaner and healthier mouth.

Water flossers are a type of interdental cleaning, like regular flossing or interdental brushes, which should be used in addition to brushing (preferably with an electric toothbrush!).

No power cable means you can move around more freely and floss where and when you choose.  This is particularly helpful for those who travel frequently or do not have a power outlet in the bathroom.

Oh, and if you see the words oral irrigator, it’s the same as a water flosser it’s just another name for them.

Waterpik is also a name you will see, this is in fact a brand name that has become synonymous with water flossers.

Best Cordless Water Flosser 2021 7

Pros and cons of cordless water flossers

There are pros and cons to water flossers in a general sense as well as those that are specific to cordless flossers.

For example all water flossers, cordless or not, tend to be easier to use, softer on the gums, offer a better clean and reach more of the tooth surface in comparison to regular flossing.

A con is that the technique does take some getting used to and they are initially anyway, more expensive than normal string floss.

Listed below are what we consider the pros and cons of cordless oral irrigators specifically.

Best Cordless Water Flosser 2021 8

Benefits of a cordless water flosser

  • Size/portability
    • Much smaller than the countertop alternative they can be stored out of sight, taken away when travelling as they will more easily fit in a bag.
  • Internal batteries
    • Batteries inside the flosser, be those user replaceable or rechargeable mean you are not attached to a power outlet and you can go where you want with the flosser. Not tied to the 2 pin socket in the bathroom.

Negatives of a water flosser

  • Tank/reservoir size
    • To be portable, the flossers need to be smaller and the tank is the biggest compromise.  Often enough to just do the job, you have to frequently refill.
  • Batteries/recharging
    • The batteries are built-in and need recharging or are user replaceable AA design often.  They need frequent charging due to the power used and often the chargers connect to 2 pin sockets, which is one of the appeals for going cordless in the first place.

Do I need a portable flosser?

It depends.

None of us NEED one, but there are health benefits from owning a water flosser.

There is then the added benefits such as size and portability that the cordless option bring which in truth generally outweighs the cons by quite some considerable distance.

With over 47.2% of over 30’s in the USA alone suffering from gum disease according to the Centre for Disease Control and Prevention,  and the proven benefits of the water flosser there are very compelling arguments to own one.

Common signs of gum disease are red or swollen, tender or bleeding gums.  

Best Cordless Water Flosser 2021 9

This is normally caused by poor oral hygiene and regular flossing can help, but water flossing in particular is more effective and comfortable to do.

A 2005 study found that the addition of a water flosser to a daily oral healthcare routine resulted in a 93% reduction in bleeding and up to 52% better at reducing gingivitis (inflamed gums) than traditional dental floss.

Other studies have shown that water flossers are able to remove more bacteria, reduce more bleeding, plaque, and gingivitis in comparison to interdental brushes and to just toothbrushing alone.

Dr. David Jolkovsky, a diplomate of the American Board of Periodontology, wrote a literature review that unequivocally showed that a Waterpik Water Flosser reduces inflammation, removes bacteria from deep periodontal pockets, does not cause damage to mouth tissues and is in the same range as brushing teeth, flossing, and using wooden sticks in the incidence of bacteremia.

Recent guidelines also recommend that the use of a water flosser is even safe for those who require antibiotic cover for dental treatment.

Such high praise has made water flossers a must have healthcare gadget, but daily life means the countertop option is not always practical, particularly if you lack a power outlet in the bathroom or travel frequently.

As you will see from our recommendations at the start of the article, Waterpik and Sonicare are just two big brands within this space, but ultimately Waterpik are industry leaders.

Best Cordless Water Flosser 2021 10

What makes a good cordless water flosser?

So although compromise for some features has to be made to make a cordless flosser portable there are some key things to look out for.

You will see that our highest ranking recommendations will boast these features.

  • Water tank/reservoir size

Smaller than the countertop options it is about finding those with the largest tank but keep the unit portable.

  • Adjustable pressure settings

Adjustable pressure can help ensure you get a more comfortable user experience.

The best cordless options will offer at least two options here, typically high or low with a pressure measured in Bar, varying from 3.1-5.2.

Best Cordless Water Flosser 2021 11
  • Size/travel friendly

It is somewhat of a catch 22 in that you want the largest tank, but you want flosser to be small enough to be portable.

Frequent travellers take note of the size and ease of which it can be fit into a bag.

  • Different tips

The more premium models, particularly those from Waterpik offer a range of different styles of interchangeable tips.

Whilst the classic jet tip is most common across all brands, the more specific options work well for particular user requirements.

Those with braces will wish to make use of the orthodontic tip whilst those who have dental work such as dental implants, tooth crowns and bridges will find the plaque seeker tip most beneficial.

Best Cordless Water Flosser 2021 12
  • Adjustable/rotatable nozzle

Some allow you rotate the nozzle, they are not completely fixed giving greater flexibility in reaching certain areas of the mouth.

Some rotate a full 360 degrees thanks to a click wheel style adjustment.

So, here then is our list of best cordless water flossers with extra detail on why we have picked each one and what we like.

Travelling with a cordless flosser

Depending on the model you choose will depend on the exact power and connector that comes supplied with it.

Most power cables for recharging the water flosser come with a 2 pin connector. This is because the models sold in Singapore are often based on UK designs that have a 2 pin power outlet in the bathroom. They support the same voltage but you need a 2 pin plug adapter to connect these to 3 pin power supplies in Singapore.

Best Cordless Water Flosser 2021 13

Some do come with 3 pin chargers and those with replaceable batteries can be a real winner for some.

If you intend to travel with the flosser be aware of the different power requirements internationally.  As a quick reference guide:

  • Printed on base/plug – 100-240V
    • Where can it be used? Globally
    • Do I need a voltage convertor? No
    • Do I need a plug adapter? Subject to country
  • Printed on base/plug – 220-240V
    • Where can it be used? In countries with 200-240V (e.g. most European countries, NOT US/Canada)
    • Do I need a voltage convertor? Yes if the voltage of the country you are travelling to is less than 220V
    • Do I need a plug adapter? Subject to country
  • Printed on base/plug– 110 Volts 60 Cycles
    • Where can it be used? In countries with 110 volts (e.g. US/Canada)
    • Do I need a voltage convertor? Yes if the voltage of the country you are travelling to is higher than 110V
    • Do I need a plug adapter? Subject to country


Subject to change between models and manufacturers, most come with a 1 year (12 months) to 2 year (24 month) warranty that will cover any faults that are not as a result of user damage.

An example might be the pump failing to push water through.

You will need to contact the manufacturers respective customer service line but will likely need your original proof of purchase and once accepted arrange repair or replacement of the product.

Where to buy

Due to the size and slightly more specialised nature of the electric flosser, sadly the availability is not quite as great as most other dental products.

You are less likely to see a wide range in your local supermarket, or pharmacy.

Many manufacturers offer their own online stores and then there are the other retailers like Lazada and Shopee that offer a wide portfolio of products.

I have to suggest Amazon as the ‘best’ option given their very competitive prices, broad range and rapid delivery options.