Fountain / Pet Waterer 3.5 l Oneisall PW04

Proper hydration is key to every cat's health. The Oneisall fountain ensures that your pet has constant access to fresh, filtered water. Thanks to its completely wireless design, you can place it wherever it is most convenient - in the living room, kitchen, balcony or even in the garden. In addition, the absence of wires eliminates the risk of cats biting, making the fountain safer, especially for young cats.

Long operating time on a single charge

You don’t have to worry about refilling the fountain every day – the PW04 is equipped with a 5000mAh battery that provides up to 60 days of operation on a single charge. Even if there is a power outage in your home, the fountain will continue to operate and provide your cat with clean water. This ensures that your pet will not be left without hydration, even when you are not at home.

Health-safe materials

Oneisall PW04 is made of high-quality 304 stainless steel, which is much safer than plastic bowls and waterers. Plastic often causes allergic reactions in cats. Stainless steel is more hygienic, resistant to bacterial growth and does not react with water. In addition, the fountain can be easily cleaned, both by hand and in the dishwasher, which saves time and ensures maximum hygiene.

3 operating modes

Oneisall offers 3 different modes of operation that can be adjusted according to your pet's behavior. Sensor mode allows the water dispenser to dispense water when your cat approaches within 1 meter, while intermittent mode dispenses water for 30 seconds every 30 minutes, encouraging your cat to drink regularly. Constant mode operates continuously when the fountain is plugged in, which will work well in homes with multiple cats.

Efficient filtration for clean water

To ensure your cat always has fresh, clean water, the fountain is equipped with an advanced filtration system. The activated carbon filter effectively removes hair, dust and other impurities, improving the taste and quality of the water. Regular filtration increases the likelihood that your cat will drink, which is crucial for its health - sufficient water helps prevent kidney and urinary tract problems, which are common in cats.

Quiet operation and energy efficiency

Thanks to the ultra-quiet pump, the Oneisall fountain does not create any disturbing noise – the noise level does not exceed 30 dB. This is important, especially for cats that are sensitive to noise. Quiet operation also means comfort for the owner – the fountain will not disturb work, rest or sleep. In addition, the energy-efficient 5V 1A design reduces power consumption, which is reflected in a longer operating time.

Large capacity and convenient water level control

The fountain has a capacity of 3.5 liters, making it ideal for both a single cat and a multi-pet home. The large reservoir means you don't have to refill water every day - one fill lasts for over two weeks. For added convenience, the transparent window allows you to easily check the water level without having to open the unit.

Warranty: 12 months

The text is machine translated.

User view

The Oneisall PW04 pet fountain is the choice of anyone who wants to provide their kitten or small dog with fresh, clean water all day long, even when they are not at home. Many owners notice that their animals are more enthusiastic about running water than standing water in a bowl - this smart automatic water dispenser therefore solves a daily concern, especially for those with more "picky" cats.

Users who value practicality and want the highest level of comfort for their animals recommend the product for its reliability and quiet operation. The Oneisall brand is already well-known among pet lovers for its friendly and innovative approach to developing products for our little friends.

Why buy at Enaa

In addition to a wide selection of water fountains for small animals, you can compare products at Enaa based on different needs and make your decision easier. At the same time, buying from us also gives you professional support from our friendly team of pet lovers, who are happy to help with all questions about the use and maintenance of the Oneisall fountain.

Answers to frequently asked questions

Is this fountain suitable for both cats and small dogs?

Yes, the Oneisall PW04 waterer is designed primarily for cats and small dogs, as it provides convenient access to water and a large enough container for the needs of one or more animals.

How often should the water in a fountain be changed?

It is recommended to change the water at least every few days, or more often if you have multiple animals, to ensure that the water is always fresh and attractive to your pets.

Is the power supply quiet even at night?

The Oneisall PW04 is designed to operate very quietly, so it won't disturb you or your pets, even at night.

How is the fountain cleaned?

All main parts of the power supply can be easily disassembled and cleaned with mild soap and water. Regular maintenance is recommended to prevent limescale and bacteria buildup.

What does it mean for a power supply to be “smart” or automatic?

The automatic waterer automatically circulates the water, keeping it fresh and reducing the possibility of unpleasant odors or sediment. Advanced features such as a water level indicator make it even easier for pet owners to use.

Description updated: January 2026