How long does the battery last per charge?

Expect roughly a night on low mist and only a few hours on dual spray. Runtime shrinks as the battery ages.

Is 538 sq ft realistic?

Treat it as an upper bound for open, low-demand spaces. For a bedroom or office, a 3L cordless unit like this is better matched to a single room.

How often do I refill the 3L tank?

About once a day on low output; more often if you run both nozzles continuously.

Does it need distilled water?

Distilled or filtered water cuts white dust and mineral buildup. Tap water works but means more frequent cleaning.

Can I use it while it charges?

Most cordless models like this run while plugged in, but check the manual; charging and misting together can slow the charge.

The humidifier, a charging cable and a manual. A power adapter and spare nozzles are not always included.

3L Cordless Cool Mist Humidifier, Dual Spray, Top Fill

Best price now

$39.99at WalmartChecked 14 h ago

Prices are checked against each store and labelled with when.

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3L Cordless Cool Mist Humidifier, Dual Spray, Top Fill

Best price now

$39.99at WalmartChecked 14 h ago

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $39.99 at Walmart on Nov 10.

Our take on the 3L Cordless Cool Mist Humidifier, Dual Spray, Top Fill

A 3-liter cool-mist humidifier that runs on a rechargeable battery, so it can sit anywhere without a cord. It offers dual spray nozzles and top-fill refilling, and the maker rates it for rooms up to 538 sq ft. That coverage claim is generous for a 3L tank: expect roughly a day of runtime on low mist and much less on dual spray. It suits bedside, desk and small-room use where an outlet is out of reach; corded 3L rivals run longer per fill but tie you to a socket.

Best forBedrooms and nurseries without a nearby outletDesk and small-office useRenters who want no cord clutterTravel or moving between rooms

Pros

Cordless battery operation, no outlet needed
Dual spray nozzles for adjustable output
Top-fill tank is easy to refill and clean
Light at 1.8 lb, easy to move
Cool mist is safe around kids and pets

Cons

3L tank needs frequent refills at high output
Battery runtime drops sharply on dual spray
538 sq ft coverage is optimistic for this tank size
No warm-mist option
Battery adds long-term wear a corded unit avoids

3L Cordless Cool Mist Humidifier, Dual Spray, Top Fill prices at every store

WalmartNew
In stockSold by Seller
$39.99Checked 14 h ago
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3L Cordless Cool Mist Humidifier, Dual Spray, Top Fill price history

Lowest price we've seen: $39.99 on Nov 11 at Walmart. Tracked across 1 store since Nov 11.

What reviewers say

Owner feedback on small cordless cool-mist units like this is mixed. People like the freedom of no cord and the easy top fill, but many find runtime short and output modest for the claimed room size.

What people mention

Battery lifeCriticisedOwners say runtime falls well short of a full night on high mist and shortens further with both nozzles on.
Mist outputMixedDual spray helps, but users find the mist modest and say the rated coverage suits only small rooms.
RefillingPraisedThe top-fill design is called easy to use and clean compared with bottom-fill tanks.
NoisePraisedMost owners describe it as quiet enough for a bedside table at low settings.
BuildMixedThe light plastic body travels well, but some owners question how long the battery and pump will last.

Specifications

Mist Temperature: Dual Mist
Weight: 1.8 lb weight
Coverage Area: 538 sq ft coverage

Questions and answers

How long does the battery last per charge?: Expect roughly a night on low mist and only a few hours on dual spray. Runtime shrinks as the battery ages.
Is 538 sq ft realistic?: Treat it as an upper bound for open, low-demand spaces. For a bedroom or office, a 3L cordless unit like this is better matched to a single room.
How often do I refill the 3L tank?: About once a day on low output; more often if you run both nozzles continuously.
Does it need distilled water?: Distilled or filtered water cuts white dust and mineral buildup. Tap water works but means more frequent cleaning.
Can I use it while it charges?: Most cordless models like this run while plugged in, but check the manual; charging and misting together can slow the charge.
What's in the box?: The humidifier, a charging cable and a manual. A power adapter and spare nozzles are not always included.
Where is the 3L Cordless Cool Mist Humidifier, Dual Spray, Top Fill cheapest?: At Walmart, for $39.99, as of our latest check.

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Stores we've priced the 3L Cordless Cool Mist Humidifier, Dual Spray, Top Fill at

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