Best Battery Backup Sump Pumps of 2019 – Reviews and Comparison

There are literally loads of battery backup sump pumps found in the market today. This article seeks to review the plus and minus of a few of them to find the best sump pump with battery backup. This article will also help you avoid the stress and rigor you may encounter in choosing the best sump pump with battery backup of your very own. We will walk you through what makes it good and provide answers to a few questions that you may have. This article doubles as a review and a buying guide. But first, we will look through the pros and cons of a few sump pumps.

Top 5 Battery Backup Sump Pumps

Best Battery Back-up Sump Pump Systems

  1. WAYNE WSS30V Upgraded Primary and Backup Combination Sump Pump System
  2. Pumpspy PS2000 Wi-Fi Battery Backup Sump Pump System
  3. WAYNE ESP25 Upgraded Battery Powered Backup for Sump Pump
  4. Liberty 441 Battery Back-up Pump
  5. Basement Watchdog BW4000 battery back-up sump pump

Best Rated Backup Sump Pump Comparison Chart

  • Name
  • Weight
  • Dimensions
  • Power Source
  • Voltage
  • Horsepower
  • Main Pump Flow Rate
  • Backup Pump Flow Rate
  • Construction
  • Display
  • Included Components
  • Batteries Included?
  • Batteries Required?
  • Average Battery Life
  • Batery Performance
  • Notifications
  • Application
  • Warranty

Wayne WSS30V Upgraded

Wayne WSS30V upgraded


The Wayne WSS30V comes preassembled. It is fitted with a couple of sump pumps, the first primary Wayne CDU800 and the second battery-powered Wayne ESP25. Both are coalesced into a unitary backup system. The Wayne WSS30V is a pump with battery backup, extremely ergonomic and user-friendly. The only user activity required for the Wayne WSS30V is to plug it in to a port. It does not require any complex mechanical installation processes. Outlined below are the pros and cons of the Wayne WSS30V.

Pros –

  • The maximum flow rate of the primary pump is 5100 gallons per hour with 1/2 HP. 3840 GPH flow rate is maintained at 10 feet of discharge height.
  • The secondary pump has a maximum flow rate of 2900 gallons per hour. At 10 feet of discharge height, its maximum flow rate becomes 1680 gallons per hour.
  • All moving and exposed parts of this pump have a coated finish to avoid rust and corrosion.
  • It is a reassemble model which is preset in the US.
  • Two heavy duty check valves are consisted of this pump.
  • The Wayne WSS30V runs a very efficient and nearly soundless motor. And unlike other pumps, it does not make any unnecessary noises.
  • It has a LED display and an alarm system that keeps you apprised of the mechanical state of the machine.
  • It comes preassembled as a unit and so is user-friendly and requires no prior expertise in use.
  • You can easily install it even if you are not enough knowledgeable about its installation techniques.

 Cons –

  • The backup battery is not standard and has to be purchased separately.
  • Small pits can constitute obstruction to the efficient running of this pump.
  • When compared to other brands having pretty much the same functionality, Wayne pump is a little bit on the expensive side.

Important guidelines for the Wayne WSS30V

The damage of the Wayne pump can be avoided by clearing the sand, stone and debris from the sump pit regularly. It must be done as this pump does not consist of an installed filter.

Lengthening the life of the Wayne WSS30V

  • The condition of the battery must be checked at least once in a month to avoid accidents.
  • You should not hit the battery post or pump with metal tools or heavy objects, so that short circuiting can be prevented.
  • Always check the discharge pipe and clean it regularly.
  • The unit must be unplugged completely before moving any part of this sump pump.

All your water related problems will definitely be solved by the Wayne WSS30V Primary and Battery Backup Combination System. Buy this pump to keep your house dry.

One of the best batteries that can be used in any system is the Wayne WSB1275 75 Ah AGM sealed acid lead battery.


Pumpspy PS2000 Wi-Fi Battery Powered Backup System

Pumpspy PS2000 Wi-Fi Battery Back-up System

PumpSpy PS2000 is a modern day technological marvel that has quite a few snazzy tricks under its sleeve ensuring that you don’t ever have to worry about your basement flooding again. It uses Pumpspy’s proprietary technology is the only technology that monitors your sump pump 24/7 round the year through the Pumpspy’s server that constantly get updated by the system installed in your home ensuring that you are prompted through text message, email and app before it is too late saving you thousands of dollars in water damage repairs and a whole cleanup job.

PumpSpy charges no subscription fee for this monitoring service and is included for free with the purchase of the PumpSpy PS2000 battery backup for existing sump pump. It is manufactured with the utmost care in the USA, and all the components are water sealed and guaranteed to function reliably.

It can work with any sump pump you might have installed previously in your home, it can be easily connected to the previous system and will begin monitoring and analyzing the pump.

It also comes with high output back up pump that is the best back up pump out there as it can pump nearly 20 gallons in just 38 seconds making it the fastest back up pump against all other competition.

PS2000 mobile appIt also comes with an impressive app that is available on both iOS and android. The app lets you take complete control and receives instant alerts anywhere and anytime regarding any issues in the main sump pump, battery or backup pump system. The system also proves its reliability by carrying out remote tests three times a week to ensure that your backup pump and battery are in their best conditions. And now for our favorite part, the PumpSpy PS2000 comes along with an unbeatable 3-year full replacement warranty.


PS2000 backup sump pump

What makes Pumpspy PS2000 stand out?

Hands down, the fact that PumpSpy PS2000 is the only monitoring system that connects to and monitors your existing pump, backup pump, and battery status. Another striking feature is its automated self-evaluation which occurs three times in a week which ensures the battery and the backup pump are working fine. The free PumpSpy App allows you to receive constant updates and alert messages instantly and allows you to track the performance of your pump from anywhere at any time.

PS2000 control module

Pros –

  • Can work with any primary pump to provide efficient monitoring and basement flood control
  • The Pumpspy PS2000 pumps 3600 gallons per hour
  • Has a free and well-constructed app giving constant updates about your primary pump, backup pump, and battery status
  • Makes rainy seasons less hassle and stress-free
  • Automotive components secured in a water-resistant epoxy to prevent corrosion makes it reliable and durable
  • The PumpSpy PS2000 performs carries out complete checkup or tests of the entire system on its own at least three times a week
  • 3-year full replacement batteries


Cons –

  • Expensive
  • The advanced features might be challenging for the elderly.


Building or buying a house is not an easy task and requires a lot of maintenance. So if you’ve recently decided to invest in buying property with a basement or wish that you could be stress-free during the monsoons, then PumpSpy PS2000 is all that you need. It can be your existing pump’s new best friend and not only constantly monitors and updates you about any existing issues in the machine at a good time, but the backup also enhances the pumping function, i.e. pumps 3600 gallons per hour. So if you want to worry about one less thing concerning the maintenance of your house, you add this to your cart blindly.

Related PumpSpy products:
PumpSpy Maintenance Free AGM Battery
PumpSpy Dual Pump Install Kit



Wayne ESP25 Upgraded

Wayne ESP25 backup sump pump
This pump is also made by Wayne. It is a 1/3 HP pump and is an upgrade on the Wayne WSS30V. It is a corded pump that runs on a 12V or a power source. It also has a backup 12V battery. Highlighted below are some of the pros and cons of the Wayne ESP25.

Pros –

  • It is constructed with heavy-duty and sturdy materials, is durable and is guaranteed to last for several years.
  • In efficiency, it outclasses almost every other pump due to the powerful 1/3 HP motor.
  • Wayne ESP25 has a capacity of 2300 gallons per hours at 10 feet lift, with a maximum capacity of 3300 gallons per hour.
  • It comes fitted with an alarm that keeps you informed of the mechanical state of the pump.
  • All moving parts are coated with a non-corrosive substance to avoid friction and subsequent break down of the machine.
  • This pump features a system that is automatic to allow for automatic engagement of the pump in the unlikely scenario of a failure of the primary system.
  • This very battery backup for existing sump pump is assembled in the USA using top-notch foreign and domestic parts and is made of corrosion resistant thermoplastic construction.

 Cons –

  • As functional as the alarm system is in keeping users apprised of the condition of the pump, it just does not shut off. A lot of users found this distracting and annoying.
  • The length of the cord of the battery charger is too short, thereby limiting charging areas considerably.
  • The standard sump width is inadequate for this pump as its operation requires extra sump width.

The Wayne ESP25 with 1/3 HP pump is ideal for use in medium sized basements. So, if you are looking for a backup pump for your small or medium sized basement, Wayne ESP25 will fulfill your requirement with ease. You will able to get a completely dry basement using this pump. And the ability to lift 2300 gallons of water per hour up to 10 feet is really a commendable performance, especially with such a small size. Moreover, the installation of this compact sized and lightweight back up system is very easy and can be done by you quite easily.

However, if you are an absolute beginner, then you might the help of a professional to install submersible pump with battery backup. The smart charging system mentioned above helps you charge the pump quickly and the power saver battery fitted inside this pump has the reputation to run longer than all the other pumps in its class. The thermoplastic body makes this pump corrosion proof, making it workable in any kind of condition. And the high grade sealed body of the pumps makes it immune to damages when immersed in water ensuring a longer life. The pump doesn’t make any noise while active and does its job in complete silence. Even when the pump is operated at its full power, it doesn’t shake or make any shattering noise, unlike others due to the rigid and high quality structure of this pump. So, this pump is highly recommended if you are looking for a battery back-up pump for your small or medium sized basement.

One of the best batteries for backup system is the Wayne WSB1275 75 Ah AGM sealed acid lead battery.


Zoeller 507 – 0005

Zoeller 507 0005
This is a basement sentry battery powered backup submersible pump. This pump from Zoeller also comes preassembled. It runs on a 12V battery. Highlighted below are some of the pros and cons of the Zoeller 507-0005.

Pros –

  • It comes preassembled and does not require any technical know-how or special tools in assembling.
  • It is user-friendly and easy to use.
  • It works perfectly as a backup to any preinstalled pump system.
  • The fitted check valves are sturdy and of premium quality.
  • The unit has a thermoplastic housing, effectively rendering it free from corrosion and rust.
  • It has a few extra features like an alarm, a LED display and indicator, informing you precisely of the operational status of the pump.
  • There is flexibility in choosing battery size for the pump.

 Cons –

  • Compared to other pumps in the same price range, this pump is considered substandard and has functionalities that are simply not up to par.
  • The battery does not come included in the unit kit and it has to be purchased separately.


Liberty 441

Liberty 441 Battery Back-Up Emergency Sump Pump System
This system is made by Liberty pumps. It operates on a 12V battery capacity. In case of a power outage or failure, this pump would still work. It is exclusively a backup pump however and may not be used as a primary pump. It does not have enough functionality or capacity to handle the quantity of discharge that a primary sump pump system handles. Outlined below are the pros and cons of the Liberty 441.

Pros –

  • This pump features a design that is single piece in nature and moulded from cast iron of premium quality. The resulting effect is a sturdy, strong and durable pump of the highest quality.
  • It has a finishing of epoxy paint that ensures that the entire unit structure is rust and corrosion-proof.
  • It has the capacity to discharge small solids.
  • It is easy to set up, install and pack up when it is no longer in use.
  • It can work effectively in small pits owing to the vertical flow of magnets.
  • It runs and efficient operating system that is relatively quiet and does not constitute noise pollution.

 Cons –

  • The cast iron make makes it extremely heavy. And since it does not come fitted with a handle, moving, using and transporting it can be a little cumbersome.
  • The standard power cord is a little bit too short.
  • Compared to most other pumps, it is also very expensive.


Basement Watchdog BW4000

Basement Watchdog BW4000 backup system
The Basement Watchdog comes preassembled. It is fitted with two of backup systems, the first primary and the second battery-powered, both combined into a unitary backup system. It is compact and small and is suitable for use in small pits. It features a 1/3 HP motor. Here are some of the pros and cons of this pump.

Pros –

  • Because it comes preassembled, it does not require any technical know-how or special tools in assembling.
  • It is ergonomic, user-friendly and easy to use
  • The small design and compact size makes it a very effective and practical pump for use in small pits, up to 12 inch a diameter.
  • The combination of both pumps are automatic in operation. This pump features a system that is automatic to allow for automatic engagement of the pump in the unlikely scenario of a failure of the primary system.
  • It has an automatic alarm system that keeps you apprised of the operational status and condition of the pump.
  • It also features a LED display and LED indicators.

 Cons –

  • It is quite pricey for its size, features and functionality.
  • The primary pump is not durable and is not likely to last a long time.
  • The unit tends to break down with the smallest amount of work. It is not very reliable in this aspect.


The best battery for battery powered backup sump pump

One of the best batteries that can be used in any system with battery backup is the Wayne WSB1275 75 Ah AGM sealed acid lead battery. It has some important functional features outlined below:

  • It is one of the most durable, long-lasting and best batteries available on the market. It does not discharge when it is left sitting or unused and has made quite a name for itself as regards its long life.
  • It does not require any maintenance, is easy to use and will not cost any extra money in repair or maintenance.
  • It does not need to be filled or refilled over and over again since it is a lead acid battery and it is completely sealed.
  • It is housed in a thermoplastic material. This ensures that it is insulated from rust, oxidation or corrosion from water, air or the elements.
  • It has an ergonomic design, weighs little, is compact, easy to use, easy to pack up and easy to store when it is no longer in use.
  • It is also very easy to move around, and transporting it is not cumbersome.

Althought Wayne WSB1275 battery is the officially recommended battery to be used with Wayne pumps, it is also compatible with most other submersible pumps that you may find available in markets.


Benefits using a battery backup for sump pump

The principal purpose of purchasing a pump is to avoid or prevent flooding in home basements. That is however, not all that they are cut out for. In case of emergencies like power outages, battery-powered backup systems are available to bail you out. Flooding in your basement may result in damages, loss of properties and in some really extreme and bad cases, loss of life. Health may also deteriorate in damp or swampy basements. Keeping your basement protected from flooding is therefore, an essential. Listed below are some of the reasons you need a submersible pump battery backup:

  • Backup: Most likely you have a primary pump in your home. It is also likely that it is an electrical device. And as electrical devices are wont to do, your primary pump may disappoint, fail or pack up on you when you least expect or even need it to. In this very likely scenario, you need a sump pump with battery backup to fall back on.
  • Power Failure: Any natural occurrences may cause a power outage. Your primary sump pump will not work when there is a power outage. This failure may result in the flooding of your basement; and with the flooding may come some attendant unwanted end results. A ready backup sump pump then, to the rescue.

Other than the afore-mentioned scenarios, a backup pump will also take the weight and strain of constant work from your primary pump. This will effectively increase the lifespan of your primary pump and reduce the risk of it completely breaking down.


Battery powered sump pump buying guide

Submersible pumps are a class of pump. They work when the entire unit is submerged or dipped into the liquid that is to be pumped. Motors utilized in submersible pumps are shut and sealed so they are airtight and free from external influence of air. The motors are also coupled closely to the body of the pump. There are several different functions or uses of submersible pumps. They may be used in simple household and domestic ways. They may be used in offshore drilling and prospecting for oil and in drilling rigs. They vary in size though. The submersible pumps that are used for domestic and household purposes are often smaller in size and less complicated in functionality than submersible pumps used for industrial purposes. They are also more power efficient as they do not require a lot of power for use. Their functions in homes vary from being used in yards, gardens or rooms for several purpose. They are used to remove excess water from flooded areas in the house. The submersible pumps used in homes for domestic reasons are referred to as “Sump pump”.

A special kind of such pump is a battery backup submersible pump. It comes fitted with an extra battery for backup power. They are majorly employed to get rid of water or control the flow of water in basements when the primary or main pump is out or order. They are especially important as they protect homes from structural damage to the basement. Water build up may result in structural damage that may avalanche into more damage or eventual collapse of the house when water has successfully seeped through the component building blocks of the house. Sump pumps also help keep the basements dry so they can be used for any activities in the house. Sump pumps ensure healthy use of basements. Backup submersible pumps are available in varying sizes, functionality, performance and power levels; as they fit the specifications and requirements of the user. They especially come in handy when the primary pump fails, in emergencies and in times of power failure.

Before going ahead to purchase a back-up pump, there are more than a few technicalities and functionalities that you need to be made aware of; coupled in fact, with your own requirements. There are quite a number of such pumps available in the market, each with its own attendant pros and cons. This makes it even more difficult to simply settle for any model. Here then, are some of those things that need to be put in consideration before making the final purchase:

  • Technology – When classified on the basis of operating technology, there are two classes of backup systems. In the first class, the AC/DC or DC batteries are used to power them. When they are connected to a power source like an electrical port, they run on AC power. When power fails, though, there is an automatic shift from AC to DC power. They run on both DC and AC power and switch between both accordingly. DC power systems only run on batteries though.
  • Battery – When classified on the basis of batteries, it can again be classed into two. The AGM batteries and the deep cycle marine batteries. Deep cycle marine batteries need to be constantly maintained by adding distilled water to it frequently. They are also referred to as wet cell batteries. AGM batteries are a step further in technological advancement that deep cycle marine batteries and they require no maintenance at all. They also run for about 50% longer than the average deep cycle marine battery. AGM batteries are therefore the best bet to consider. They are easy to use and are hassle free.
  • Construction – Pumps are constructed with different materials. The materials used in the construction is important as it has a direct correlation on the longevity and durability of the sump pump. Plastic and cast iron are most commonly employed in the construction of sump pumps. Pumps constructed with cast iron are sturdier and last longer than those constructed with plastic. An exterior finishing with a coat of epoxy or paint further makes the cast iron rust and corrosion proof.
  • Performance – How well a sump pump can work and for how long is determined by the overall performance of the pump. A pump must meet the requirements for which you are buying it. Generally, most pumps have an average output of anything from 2100 to 3600 gallons in an hour. The best submersible pump for you should be one that exceeds or at the very least matches the smallest output boundaries.
  • Store – Pretty much everything you purchase on the open market or in retail stores come with warranty. Buy a pump that has an appreciable warranty. And it is even better to buy from a place that offers after buying services, where you can always take your pump back in case of maintenance, repair or malfunction. Buy from a reputable store where you are guaranteed to have original products. Your pump should also not be too bogus that it cannot be appropriately stored out of the way when it is not being used.


Tips for using battery-powered backup sump pumps

When your backup sump pump has been thoroughly researched and subsequently purchased, then comes the time to put it to good use. Before breaking out for the first big use though, please go through these helpful tips that will help you make the best use of your system.

  • Power – You need to understand how your newly purchased system is powered. Use the tips given above to understand this. A DC/AC system will run itself automatically in case of a power failure. If it is an older system of tech, it may not automatically switch itself, in which case you need to get it manually done and activated.
  • Safety – When using any piece of equipment, especially electrical, machinery and mechanical ones, there are certain safety rules and precautions to be taken. To this end, safety and instructional manuals are almost always provided by the manufacturers. Endeavor to read these. Do not walk on wet floors if your pump is being used in the basement. Also, redo the wiring of the basement using the services of a professional and certified electrician. Electric shocks and electrocutions is a legitimate concern. Also, do not, under any circumstances, touch a working pump with wet hands.
  • Battery – Use recommended and good quality battery units when using the battery-powered pumps. It is also best that the battery be fully charged before it is put to use. Several cycles of charge and discharge will almost often reduce the capabilities and capacities of a battery. Do well to bear this in mind. Use a compatible battery or your backup system may go kaboom! In which case, that’s good money wasted.

When you follow these tips for using your backup system, you can be sure that it will last you a very long time and you will get your money’s worth out of it.


Frequently asked questions


Why do I need a battery-powered backup sump pump?

The primary purpose for which you need a battery powered backup sump pump is to have a way out when there is power failure or power outage. Also, in case of natural disasters and should your primary pump fail. In emergencies, a battery backup pump ensures that your basement is not flooded. A backup pump may also work in tandem with your primary pump to secure the life of your primary pump.


What could cause sump pump failure?

Any number of natural occurrences may cause your primary pump to fail. Lack of proper maintenance may also cause the failure. Technical issue, assembly issues, or age may cause your pump to fail. Disparity in moving parts may also cause failure of the pump. Overloading it, using it under the wrong conditions, keeping it on at all times or clogging it with dirt or debris may cause it to fail.


I own a generator; would I still need to install a battery-powered backup sump pump?

Generators are effectively more costly than backup sump pump powered by battery. Owning a generator does not stop you from owning a backup pump with battery. And since power failures aren’t the only factors contributing to failure of pump, a generator may not be very useful if your primary pump fails from something like clogging or overloading.


How easy it is to install a backup sump pump?

This depends entirely on the model of the system you purchased. New models are relatively easy to use as they come preassembled and so should not give you any trouble in installation. Some are however quite complex and you need experts or technicians to get them up and running.


The acid in my battery exhausted; what should I do?

Replacing the acid in the battery is an exhausting and not at all rewarding process. Your best bet is to simply get a new battery. That beats replacing the acid anytime.

Can I connect two batteries together?

Yes. Two batteries can be connected together. Be sure that the amp you are connecting are compatible or you may end up spoiling both. Connecting two batteries is a rigorous process though, so be sure that the resulting effect is worth it.


How can I dispose of extra acid?

Acid is a genuinely dangerous material. You should exercise care when handling it. There are one of two ways to dispose of it. Either neutralizing it with a base in the presence of water, or leaving it to the experts to pick up.



From this article, it is evident that the need for a battery backup system for basements in addition to your primary pump cannot be over-emphasized. When there is power failure and a battery powered backup sump pump is not available to come to the rescue, any number of things are likely to go wrong. It is then best to have one on standby to guarantee your peace of mind.

This review has attempted to detail out criteria and factors needed to help you purchase the most appropriate systems with battery that will meet your specifications and requirements. Effectively putting these factors and criteria at the back of your mind when you go to purchase your backup pump powered battery by will save you a lot of heartache and see to it that your money is spent judiciously. This article has also reviewed the pros and cons of the best system so that you are able to make informed decisions. In addition, we have also endeavored to answer some frequently asked questions to clear your doubts. All these to ensure that you purchase the best pump and that it does everything you need it to do when you need it to do them. Protection Status