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oneisall PW13 Check price on Amazon

oneisall Wireless Cat Water Fountain: 74oz/2.2L Cordless Pet Water Fountains, 4000mAh Battery Operated Ultra-Quiet Integrated SilentFlow™ Pump for Cats Indoor, Automatic Cat Water Dispenser, BPA-Free Review

By Dr. Lena Ortiz · Canine wellness writer · Published 2026-05-13 · Updated 2026-07-09

4.4 (737) Amazon rating$19.99700+ bought last month

Our verdict

The oneisall PW13 is a battery-powered fountain for owners who don't want a cord running across the floor, backed by a 4000mAh battery and a pump built specifically to run quiet.

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Best for

Cat owners who want to place a fountain away from an outlet, like a bedroom, closet, or the middle of a room.

Skip if

You'd rather not manage battery charging and prefer a fountain that just stays plugged in.

  • Priced 20% below the category median ($24.99 across 43 tracked models)

Our scorecard

4.4/5 overall
  • Owner rating4.4/5

    4.4 average across 737 owner ratings

  • Popularity2.0/5

    737 owner reviews, fewer than most models here

The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other dog and cat food, health, gear and grooming we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.

Overview

["The PW13 is built cordless from the ground up, with a 4000mAh battery meant to power the pump for stretches without a recharge. That's the main selling point here: no cord to route or trip over, so it can go in spots a corded fountain can't, like the center of a room or a closet shelf.", 'It holds 74 ounces, or about 2.2 liters, which is a fairly standard size for a single-cat fountain. The listing highlights a proprietary SilentFlow pump built into the unit and a BPA-free build for the water-contact parts.', "At just under 20 dollars, it's priced in line with corded budget fountains despite the added cordless hardware, and it's already pulled in over 700 ratings at a 4.4 average in a short time on the market."]

Pros

  • Cordless design frees up placement options
  • 4000mAh battery sized for real runtime between charges
  • BPA-free materials
  • Strong early rating average

Cons

  • Battery needs periodic recharging, unlike corded fountains
  • 2.2 liter tank suits one cat better than multiple
  • Newer listing with a smaller review history than category leaders

Performance notes

The integrated SilentFlow pump is the headline spec, aimed at cats who are put off by the whirring of a typical fountain motor. Because it runs on battery rather than a wall cord, expect to check charge levels periodically rather than treating it as a plug-and-forget appliance.

What buyers say

A 4.4 average rating from over 700 reviews suggests owners are largely happy with it so far, though its review count is smaller than the category's longest-running best sellers.

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Frequently asked questions

How long does the battery last on a charge?

It runs on a 4000mAh battery, which is sized for multi-day cordless use, though actual runtime depends on how continuously the pump cycles and how often your cat visits.

Can I use it plugged in instead of on battery?

It's built as a cordless, battery-operated fountain, so cordless use is the intended setup rather than an add-on feature.

Is it loud when the pump runs?

It uses what the brand calls an integrated SilentFlow pump aimed at quiet operation, which is worth checking against your own cat's sensitivity to fountain noise.

best cordless cat fountain  ·  All Cat Fountains

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