Spectra S2 vs S9 Electric Breast Pumps – A Detailed Comparison Guide

Spectra S2 vs S9 Breast Pumps

My name is Sharon Dunn and today I am talking about the Spectra S2 and S9 breast pumps.

Add another tough decision to a new mother’s plate why don’t ya! All these different makes and model numbers is enough to give a person a headache. We are hear to help though. The Spectra S2 vs S9 comparison is a close, but a definite winner emerges.

Spectra breast pumps have been well-liked for a long time because of their excellent features and functions. But given the variety of models available, it might be challenging for mothers to choose the one that suits them best.

As a result, in this post, we will provide you with a comparison guide for two of the most popular Spectra products: the Spectra S2 and S9 models. These Spectra variations are so well-functioning that many people struggle to decide which one to take.

So let’s look at a detailed comparison of the Spectra S2 vs. S9 electric breast pumps. 

Table of Contents

Spectra S2 vs. S9 Differences

Every product has specific unique characteristics.

Therefore, the differences between the Spectra S9 and S2 are listed below.


One of the essential parts of an electric pump is its battery life. After all, no one wants to be stuck in the middle of a pumping session with a dead battery! So how do the Spectra S2 and Spectra S9 stack up in this department?

The good news is that the Spectra S9 has a rechargeable battery pack. That means you can easily use this device anywhere without needing any designated power station to plug it in. 

On the contrary, the Spectra S2 doesn’t come with batteries. So you must always plug it in to use it. Another alternative would be to carry a power bank with you all the time so that you can connect it with your S2 through a power cord and use it when needed. 

So when it comes to Spectra S2 vs. S9 battery comparison. I think the S9 here wins the game. On an added note, the Spectra S9’s battery can last up to 2.5 hours, with a battery charging time of around three to four hours. Plus, you may also use the pump plugging in your car seat’s charging point. 

Saved Functions

There are numerous operational functions in both the Spectra S2 and S9 models.

But here’s the thing: Unlike the S2 model, which allows you to save a personalized function setting, the Spectra S9 does not let you do so.

It means that when using the Spectra S9 with your customized functional setting, you will need to note it down. Otherwise, you will have to customize the functions from scratch the next time you use the device.

This is one major difference between the Spectra S9 and Spectra S2 pumps


The Spectra S9’s motor capabilities fall short of those of the Spectra S2 model. Compared to the S9 model, which has a 260mmHg suction level, the S2 model has a 270mmHg suction level.

These devices also have various vacuum suction systems. The S2 model’s vacuum suction level can be changed to a maximum of L12, but the S9 can only reach as high as L10.


The Spectra S9 feels significantly lighter than the Spectra S2 in weight. The S9 has a small and lightweight build, weighing only .5 lbs. In contrast, the Spectra S2 feels substantially larger in the hands and weighs around 3 lbs.


A key selling feature for the Spectra S9 Plus is its design. It is manageable since it features a streamlined, slim, and more modern-looking appearance.

The Spectra S2 Plus, on the other hand, has a distinctive white and pink design with a spherical body that some people could find more difficult to hold and carry without a bag.


The Spectra S2 features a built-in nightlight system, but the S9 model only has a backlit display that makes it easier to see in low light conditions rather than in the dark. 

Having a nightlight in an electric breast pump is a very convenient function. It helps you check on your baby’s condition as well as pump breast milk even in the dark. 

Hospital Grade

The Spectra S9 does not qualify as hospital grade because it does not have a high-grade motor like the S2 or S1 variant. That implies that you may not distribute or lend this device to anybody else and may only use it for personal purposes.

The S2 variant, on the other hand, is a medical-grade gadget. This device has a strong motor and some accessories that allow it to be used by multiple people.

Spectra S2 vs. S9 Similarities

The Spectra S2 and S9 models differ in many factors, but they also share a few things in common. So, here’s a rundown of the Spectra S2 vs. S9 similarities.

Universal Voltage: The Spectra S9 and S2 feature input ranges of 100V-240V and 50-60Hz, making them suitable for worldwide use. 

BPA Free Safety Parts: Alltra components are made phthalate- and BPA-free. That means their products have no toxic or harmful elements that could harm your baby’s health.

Adjustable Setting: The Spectra S9 and S2 models allow you to customize their pumping settings. From vacuum suction level to motor strength, everything can be personalized as per your need.

Closed System: Both gadgets include a closed system for suctioning breast milk. It guarantees that the milk won’t be able to enter the device’s motor.

Single and Double Pump Mode: Spectra models always come with a double pumping feature. It means you may pump one or both breasts at once.

Easy to clean: These gadgets’ accessories, including the bottles, flanges, and other items, is easy to clean.

Features Comparison Table

The following table compares the features of the Spectra S2 and S9 models.

FeaturesSpectra S9Spectra S2
BatteryBuilt-in rechargeable batteryNo rechargeable battery
MotorLess powerful than S2Powerful
Saved settingsNot availableAvailable
Hospital gradeNoYes
NightlightNot availableAvailable
Weight1/2 lbs3 lbs
Closed systemYesYes
BPA Free PartsYesYes
Universal Voltage100V-240V / 50-60Hz100V-240V / 50-60Hz
Adjustable Pumping Mode AvailableAvailable

Spectra S2 vs. S9 Breast Pump User Guideline

The Spectra S2 and S9 breast pumps provide mothers with the best possible pumping experience. They are easy to use and have several features that make their operational process a breeze.

Here’s a quick guide on how to get started. 

  • First, ensure your Spectra S2 or S9 model pump is nearby. If you’re using the Spectra S2, have a power adapter. And if you intend to use the S9 model, you can efficiently operate it with its rechargeable battery pack.
  • Additionally, you will need to manage some feeding bottles. It will help store the breast milk for your baby. You’ll also need to assemble the flanges (the part that goes over your nipple) and tubing.
  • Once everything is ready, sit comfortably and place the flanges on your breasts. Ensure they’re positioned correctly so your milk will flow into the bottles without making a mess. Then turn on the pump and let it do its job!
  • To determine what works best, you might need to test several settings. But typically, we suggest you start on a low setting and increase the suction as needed. 
  • After you’re done, shut off the pump and take the flanges off. To maintain your pump functioning properly, be sure to give everything a thorough cleaning.

Spectra S2 or Spectra S9 – Which One Should You Choose?

The Spectra S2 is a single-user, portable breast pump ideal for occasional pumping or when you’re on the go.

It’s lightweight and compact but requires you to connect to a power outlet every time as it, unfortunately, doesn’t come with rechargeable batteries. Additionally, the S2 is quiet, so you can pump discreetly almost anywhere.

The Spectra S9, on the other hand, is a double-electric breast pump ideal for daily or frequent pumping. It’s larger and heavier than the S2, but it’s still portable and can be used with an AC adapter or battery pack.

The S9 is quiet but has more suction power than the S2, making it more efficient for pumping larger amounts.

So which one should you choose? If you’re looking for a compact and lightweight pump to take with you on the go, the Spectra S2 is a great option. However, if you’re looking for a more powerful pump for daily or more frequent pumping, the Spectra S9 is a better choice.

Key Takeaway

The Spectra S2 and Spectra S9 are two of the most comfortable electric breast pump on the market.

Everything is so well-designed, from its operative technology to portability allowance, that customers have expressed their most profound approval. But many new clients are still uncertain about which of the two models to purchase.

Therefore, this article has covered detailed guidelines on the Spectra S2 vs. S9 models. If you have faced a dilemma about which model to buy, we hope this article has cleared up your confusion!


If you can afford the S2, it is the better performer and has better durability ratings. 93% of mothers responded favorably when questioned if they would buy the S2 again.

However, if lightweight and portability are your #1 concerns, the S9 checks the boxes on that for you.


Is Spectra S2 hospital grade?

Yes! The Spectra S2 is a hospital-grade device that is raved about by users for its quality performance. Consumers especially love its easy-to-operate functions and suction level.

Can you pump both breasts at the same time with Spectra?

Of course! The Spectra S9 and S2 are designed with a dual pumping system. That means you can work on both of your breasts at the same time. The S9 is also designed to be more comfortable and effective than other pumps on the market. 

Is the Spectra S9 breast pump good?

The Spectra S9 breast pump is an excellent choice for mothers who want a reliable, high-quality product. It is very comfortable to use and is very efficient in extracting milk. 

The pump is also very quiet, which is a big plus for mothers who want to pump in public places discreetly. Overall, the Spectra S9 is an excellent breast pump that will meet any mother’s needs.