How to Change Batteries in Swiffer Wet Jet: A Comprehensive Tutorial

The Wet Jet allows you to spray the cleaning solution on the floors, which is one of its biggest highlights. But this feature needs a battery-powered pump to function. To keep your Wet Jet working properly, keep reading to find out how to replace its batteries.

How To Change Batteries In Swiffer Wet Jet

The battery replacement process is straightforward and takes just a few minutes. Here's exactly what you need to do to get your Wet Jet back up and running.

Get Correct Batteries For Your Wet Jet

Before carrying out any Swiffer battery replacement or maintenance, make sure you know which kind of battery your mop runs on. Each unit needs four AA batteries to work. You can use either rechargeable or disposable models; both of them are fine.

For your Wet Jet, use AA batteries

There are more considerations to this choice, which we will discuss below. Jump ahead to that part if you want to learn more about batteries and how to choose the best ones for your mop.

For now, assume that you have suitable batteries on hand. With each Wet Jet unit, Swiffer may include some batteries already. You can get them out and use them for this replacement.

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Find The Battery Compartment

Here's where to look: turn off the switch of your mop, even if it's already stopped. Place its cleaning pad against the floor and hold the handle in your comfortable position.

Look at the top of the Wet Jet's main body, and you can find the battery compartment where the handle is attached. It has a lighter color and an arrow printed on the surface.

Remove The Battery Compartment

Press the arrow down with your fingers, then slide the whole compartment up. If you find it hard to push it up towards the handle, use a ruler or stick. When the piece gets loose, it's easy to take it off completely as there is nothing left to hold it into the main machine.

Flip the unit over, and you can see how it holds all four AA batteries inside. There are two of them on each side of the compartment.

Replace The Batteries

Take all the old batteries out and insert the new ones into this holder. Follow instructions printed on the plastic so you can line up the batteries properly.

You can also remember how the old batteries were positioned as a reference. Make sure the batteries are loaded up and stay firmly in their place.

How to attach the batteries

Install The Holder Back To The Machine

Flip the battery compartment over so you can see its top side. Place the mop on the floor and find the original place of the compartment again.

Align the compartment with the main body and slide it in. It should click in, indicating that the battery compartment has been properly installed.

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Test Your New Batteries

Follow the Swiffer WetJet instructions and turn it on to see if the pump of your mop releases any liquid. If it doesn't, try to disassemble the batteries and install them again properly.

Still not working after reinstalling? Check if the batteries are inserted in the correct direction. The positive and negative ends need to match the markings inside the compartment. If your mop still won't spray, the issue might be with the pump itself rather than the batteries.

How To Choose Batteries For Your Swiffer Wet Jet

Like most advanced household and customer devices these days, your Swiffer Wet Jet uses batteries to power itself. But instead of employing common built-in rechargeable technologies like lithium-ion (Li-ion) batteries, which are used in most smartphones these days, it relies on four AA batteries.

This traditional choice brings down the cost of the Swiffer Wet Jet. You also don't need to worry about it running out of power on a regular basis like your phone. All you need to do is replace those batteries once in a while.

They aren't expensive, but choosing AA batteries can be an intimidating task. Many people have forgotten or simply aren't familiar with these standard cells to begin with. We're all used to plugging in a charger whenever our smartphone runs low.

In addition to knowing how to change batteries in Swiffer Wet Jet, the section below will help you gain a basic understanding of AA battery technology and how to pick the best ones for your mop.

Understanding Battery Basics

Like other battery technologies, AA batteries work by converting chemical energy into electrical energy that powers your devices. The key difference between battery types lies in whether this chemical process can be reversed.

Think of it like a fuel tank. Disposable batteries are like single-use fuel cans—once empty, you toss them. Rechargeable batteries are like refillable tanks—plug them in and they're ready to go again.

Type

If you've never bought AA batteries before, you should know that there are two types of them, depending on whether you can recharge and use them again.

Disposable

Disposable models are older and sold at cheaper prices. They use primary cells such as zinc-carbon to do the job. These single-use batteries are still the most commonly used form as they are widely available and don't cost much. On the other hand, you would need to pay a lot for a proprietary Roomba battery, for instance.

The cells of a non-rechargeable AA battery use irreversible chemical reactions to convert chemical energy and create current.

A lot of reactants are involved during this process. They are added into the battery during manufacturing and run out gradually when in use.

When a disposable battery has no reactants left, it can't produce electrical energy anymore and becomes useless. You will have to throw it away and replace it with a new one.

That said, they can keep an electrical device running for a long time before a replacement is needed. Users also don't need to buy a charger to bring up the energy level, making them a hassle-free and affordable option.

Low-power devices such as smoke alarms, toys, remote controls, and clocks are perfect applications of this battery type. They don't drain much power. You can rest assured that your device can be left alone for many months or even years without problems.

Who should choose disposable batteries: If you only mop once or twice a month, disposables make sense. You'll spend around $25-30 per year on batteries, which is less than the upfront cost of rechargeables plus a charger.

Keep in mind that you will need to replace non-rechargeable batteries eventually. And if you're an eco-conscious consumer, its single-use nature can be a deal-breaker.

Rechargeable

As their name suggests, these batteries can be charged and used again and again. There is actually a limit to how many times you can do this as the capability of the batteries—how much power it can hold—decreases over time. But in reality, you can keep using them for a long time before this becomes an issue.

Rechargeable batteries are better for the environment

The reason you can recharge and bring back their power level is that these batteries use reversible reactions to convert chemical energy into electrical energy. When they're connected to a charger, the power source restores the charge that has been drained.

Manufacturers implement newer and more complicated technologies to make rechargeable batteries. They are more expensive and need greater care from users to work as intended.

Reducing the amount of e-waste in the environment is another upside of this battery type. Rechargeable batteries have a longer lifespan. By the time you need to dispose of a unit like this, several single-use batteries may have been thrown away already.

Real-world example: Sarah, a mom of three who mops almost daily, switched to rechargeable batteries last year. She spent $35 on an eight-pack of batteries and a $15 charger. In the first year alone, she saved over $50 compared to buying disposables. Plus, no more last-minute store runs when batteries die.

However, the voltage rating of these batteries is typically not as high as that of traditional models. It can put a dent in the performance of your device if it relies on a higher voltage rating to work.

For the Wet Jet, this voltage difference rarely matters. You might notice the spray becomes slightly weaker when rechargeable batteries are nearly depleted, but it's barely noticeable during regular mopping.

When you opt for rechargeable batteries, choose NiMH models whenever possible. It's the latest technology for AA batteries.

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Storage Capacity

Each battery technology has its own capacity, measured in milliampere-hours (mAh). For instance, zinc-carbon AA batteries can hold up to 900 mAh, while high-quality nickel-metal hydride (NiMH) rechargeable models can have a capacity of up to 2,750 mAh.

Manufacturers print this figure on the label of their products. It's usually the total storage capacity—the maximum amount of charge they can hold. The higher this number, the longer the battery can last.

The actual power batteries have is lower than those official numbers. But they are still a good indicator for the real capacity rating.

What this means for your Wet Jet: A 2,500 mAh rechargeable battery will power your mop for roughly twice as many cleaning sessions as a 1,200 mAh battery. Look for rechargeables rated at least 2,000 mAh for the best balance of performance and value.

Power Rating

Not every AA battery has the same power rating, which is the highest output it can deliver. A model with a higher rating means the pump of the Swiffer Wet Jet can operate normally even when it demands a stronger current.

For the Wet Jet's spray pump, this matters most when you first press the trigger. The pump needs a brief surge of power to start. Quality batteries deliver this consistently, while cheap batteries might cause hesitation or weak spray.

Pack Size

Most manufacturers offer their batteries in various packs, with packs of 4 or 6 being the most common.

Buying a bigger pack than what you need may seem unnecessary and a waste of money. But actually, it's a recommended strategy, especially for rechargeable models.

For example, the Wet Jet needs four batteries to operate. If you buy a pack of eight or two packs of four, you can replace the whole set and continue to use your mop without having to wait until the old batteries are fully charged. You can just charge them while using the four batteries left in the pack to clean your house.

You should also take into account the number of batteries your charger can handle at once. Some can only charge a single battery at a time, which leads to a long charging time for the whole set. A bigger pack with abundant batteries doesn't cost much more but allows you to proceed with your cleaning at any time.

This advice also applies to single-use batteries. Having extra units around can come in handy. No one wants to run out to grab batteries right before friends come over.

Smart buying tip: If you go rechargeable, buy eight batteries and a four-slot charger. While one set powers your Wet Jet, the other set charges. Total cost: around $40-50 upfront. You'll break even in 12-18 months compared to buying disposables.

Charge Cycle

Charging an AA battery

Many models can be charged and reused up to hundreds of times. This is on the lower end of the market.

Many high-quality batteries can last 1,000 or 2,000 cycles. Find them if you want your batteries to last as long as possible.

Rechargeable batteries lose their capacity eventually. But a higher cycle count means this process happens more slowly. Go for at least 1,000 cycles, and you won't need to worry about replacements for a few years.

Do the math: If you recharge batteries once a month, a 1,000-cycle battery will last over 80 years in theory. In practice, other factors reduce this, but you'll easily get 4-5 years of regular use before noticing any decline.

Low Self-Discharge

All battery models suffer from the phenomenon called self-discharge. Even when you don't connect them to any devices, they start to lose charge over time. The amount of power a battery holds decreases over time. You may have less than a full charge when your batteries are put to use.

Rechargeable batteries have a faster self-discharge rate than disposable models. Some manufacturers make low self-discharge (LSD) batteries.

They come with an added cost. But these models are still usable after many years, in contrast to regular versions, which can lose a significant amount of charge or even become completely drained after a few months.

NiMH batteries have the highest self-discharge rate. They can be a bad choice if you want to put many batteries in storage with little maintenance.

When LSD batteries matter: If you only mop occasionally—maybe once a month or less—spend the extra money on low self-discharge batteries. Regular rechargeables can lose 30% of their charge just sitting in your drawer for a month. LSD batteries retain 80% charge after a full year.

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Warranty

Though this isn't a strict requirement for small batteries, models that come with a warranty are always nice to have. When something goes wrong—such as it runs hot or you can't charge it—you can ask the retailer or manufacturer for a Swiffer WetJet battery replacement.

Premium battery brands often include warranties ranging from one to five years. It's a sign of confidence in their product quality.

Brand

There are a lot of reputable manufacturers that make high-quality AA batteries. Here are some trusted names:

Energizer - Industry standard, available everywhere. Their rechargeable line offers solid 2,000 mAh capacity and lasts 3-4 months between charges with weekly mopping. Expect to pay $12-15 for a four-pack.

AmazonBasics - Budget-friendly with solid performance. These work surprisingly well for the price. An eight-pack runs about $16 and includes 1,000+ charge cycles. Great value if you're just starting with rechargeables and want to test the waters without major investment.

Tenergy - Excellent rechargeable options. Their premium batteries are rated for 2,000+ charge cycles and maintain capacity exceptionally well over time. You'll pay $18-22 for a four-pack, but they're worth it for heavy users who mop multiple times per week.

Panasonic Eneloop - Long-lasting and reliable. These are the gold standard for low self-discharge batteries. Leave them in a drawer for a year and they'll still have 80% charge when you need them. Perfect for occasional moppers who want batteries ready to go anytime.

Price

Most batteries cost from $0.50 to several dollars per unit. A super expensive model doesn't necessarily mean it offers significantly better performance. Aim to pay around $2-3 for each rechargeable battery. This price range can guarantee the highest value for your money.

Budget breakdown: Quality rechargeable batteries cost $8-12 for a four-pack, while premium options run $15-25. Disposables are cheaper upfront at $5-8 for a four-pack, but you'll replace them 6-8 times per year with regular use.

For disposables, stick to name brands. Generic batteries from dollar stores might save you a dollar or two, but they often die 30-50% faster, making them more expensive in the long run.

Common Issues After Changing Batteries

Sometimes fresh batteries don't solve the problem right away. Here's what to check:

Wet Jet won't spray at all: Remove the batteries and reinsert them. Make sure each battery is seated firmly and the compartment clicks closed. If it still doesn't work, try a different set of batteries. Sometimes one battery in the pack is defective.

Weak or intermittent spray: Your batteries might be fine, but the battery contacts inside the compartment could be dirty. Wipe them gently with a dry cloth. If you see corrosion—a white or greenish crusty buildup—carefully clean it with a cotton swab dipped in vinegar, then dry thoroughly.

Batteries drain too quickly: This usually means you're using low-quality batteries or the pump is working harder than it should. Check if your cleaning solution bottle is properly seated. A loose bottle can cause the pump to strain, draining batteries in half the normal time.

New batteries test as "dead": Occasionally you'll get a defective battery right out of the package. Try each battery individually in another device like a TV remote to identify the culprit.

Wrapping Up

For new users, figuring out how to change batteries in Swiffer Wet Jet can seem difficult at first. But this is actually straightforward and won't take you much time once you've learned how to do it.

Much of the success comes from your choice of batteries used in your Wet Jet. You can take advantage of the default batteries Swiffer includes in the box for the first replacement. After that, choosing the right AA batteries can keep your mop in good condition while saving you time and money in the long run.