6 Best Battery Backup Sump Pumps – (Reviews & Guide 2020)

For people who care about their houses, water in the basement is among their greatest nightmares. Upon hearing the word “flood” we shiver and that is more than normal. In such cases, sump pumps can save your life or at least your home.

The problem is that many times the inclement weather in some areas will bring torrential rains. If the rain hits hard and there’s a power outage your sump pump might become inoperative. What you can do in order to deal with this is to have another pump nearby. Battery-powered backups are the way to go but first, you need to locate the best battery backup sump pump.

The backup battery pump gives you several more hours of extra protection from water damage. We are happy to present to you the exclusive buying guide that will help you find the perfect unit for your requirements. Your only task will be to go through our battery backup sump pump reviews below. Once you are done, you can check the interesting tips, little tricks, and directions that we have collected specially for you in this article.

SEC America Emergency Power for Sump Pumps

SEC America Emergency Power for Sump Pumps

  • Price: $$$$$
  • Dimensions: 22.1 x 11 x 7.1″
  • Weight: 16.75 pounds
  • Horsepower: 1/3 HP
  • Max Flow: N/A
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WAYNE ESP25 12 Volt Battery Back-Up Sump Pump System with Audible Alarm

WAYNE Battery Back-Up Sump Pump System

  • Price: $$
  • Dimensions: 7.2 x 5 x 10″
  • Weight: 13.5 pounds
  • Horsepower: 1.00
  • Max Flow: 3300 GPH
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Basement Watchdog Emergency Back-Up Sump Pump

Basement Watchdog Emergency Back-Up Sump Pump

  • Price: $
  • Dimensions: 17 x 10 x 11.7″
  • Weight: 9 pounds
  • Horsepower: 1.00
  • Max Flow: 1000 – 2000 GPH
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Superior Pump Powered Battery Back-Up Sump Pump

Superior Pump Powered Battery Back-Up Sump Pump

  • Price: $$
  • Dimensions: 13 x 10 x 16.5″
  • Weight: 12.5 pounds
  • Horsepower: 1/3 HP
  • Max Flow: 1380 GPH
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Zoeller Aquanot Battery Back-Up System

Zoeller Aquanot Battery Back-Up System

  • Price: $$$
  • Dimensions: 8.5 x 8.5 x 10.5″
  • Weight: 16.3 pounds
  • Horsepower: N/A
  • Max Flow: 2340 GPH
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PumpSpy Technology Battery Back-Up Sump Pump

PumpSpy Technology Battery Back-Up Sump Pump

  • Price: $$$$
  • Dimensions: 16.5 x 10.2 x 15.8″
  • Weight: 14.3 pounds
  • Horsepower: 0.33 HP
  • Max Flow: 3000 GPH
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Best Battery Backup Sump Pump Reviews – (Newest Models)

Let’s not waste your time and begin with the top six products on the market right now. They are not arranged in any specific order. It is up to you to decide which one is the best for you.

1. SEC America Emergency Power for Sump Pumps

SEC America Emergency Power for Sump PumpsThis battery backup sump pump interchanges between a pump and its AC wall outlet. When there is a normal electrical power present, the battery is simply being charged. It also detects any AC power failure. In case there is a power outage, the battery backup will use that charged energy and will automatically start the pump. When AC power comes back, the 822PS automatically switches the pump back to AC wall outlet power.

The power you can expect to get from the unit is 1200W. It will withstand rough conditions because it features a rugged aluminum housing. The size is also not a very large meaning that you can save some basement space around that sump pump.

There’s no need to worry about power cords as all the battery cables are included. You can mount the unit either on a wall or simply have it laid out on a flat surface. There’s a 2-year factory warranty.


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2. WAYNE Battery Back-Up Sump Pump System

WAYNE Battery Back-Up Sump Pump SystemThe WAYNE reinforced thermoplastic battery backup system includes a unique float switch design that will operate the pump with minimal travel area to fit in smaller pits, reducing float switch hang-ups. This professional-grade backup system keeps the battery properly charged and comes equipped with an audible alarm and a LED indicator lights that alert the homeowner when the backup system is active.

The installation is really easy and it does not require any major plumbing changes. This neat backup sump pump has a corrosion-resistant, sealed thermoplastic construction. The item requires a 12 V battery that is not included in the package. It is recommended that you use the WAYNE WSB1275, 75 AMP hr maintenance-free battery.

The backup has a max flow of 3300 gallons per hour at 10-feet of lift which makes it a nice powerful choice. You get a unit that is assembled in the USA, with foreign and domestic components and has corrosion-resistant thermoplastic construction.

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3. Basement Watchdog Emergency Back-Up Sump Pump

Basement Watchdog Emergency Back-Up Sump PumpThe Basement Watchdog Emergency battery backup sump pump system offers comprehensive basement flood protection at a great price. It has a built-in monitoring system, patented dual float switch, and an energy-efficient pump which automatically protects your basement when needed.

The Basement Watchdog Emergency Battery Backup Sump Pump pumps 2,000 GPH at 0 ft. of lift or 1,000 GPH at 10 ft. of lift. It fits next to the main AC pump and automatically begins pumping during power outages, when the main pump fails or when water flow exceeds the capacity of the main pump. Its unique monitoring system sounds an alarm when maintenance is needed or a problem arises. A display panel indicator LED light will find the problem that set off the alarm and the rightful action you need to take.

The package Includes а controller, charger, dual float switch, pump, and а battery box. There are no batteries included. The user-friendly control panel lights up with a warning and describes what to do for simpler maintenance. This battery backup sump pump is compact and can be installed even in small or narrow sump pits.

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4. Superior Pump Powered Battery Back-Up Sump Pump

Superior Pump Powered Battery Back-Up Sump PumpThe following unit is not intended to replace your primary sump pump. It is intended to provide temporary back up during power failures or malfunctions with the primary pump. It is designed to work with 12 volts, lead-acid deep cycle marine / RV batteries. Either a flooded cell (serviceable or maintenance-free) or a sealed AGM battery is acceptable. You have to choose a battery with a minimum 90 amp-hour rating and a 175-minute reserve capacity or larger. Avoid using automobile batteries as these types of batteries are not intended to be charged/discharged for extended periods of time.

During an unexpected long power outage or even during an emergency, you can actually use your automobile battery. Just try to replace the deep cycle battery quickly as the automobile battery will be drained exceptionally fast due to the charge and discharge cycles. This battery backup sump pump has a thermoplastic battery box which makes it durable and a perfect choice.

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5. Zoeller Aquanot Battery Back-Up System

Zoeller Aquanot Battery Back-Up SystemThis battery backup sump pump is constructed using Moeller’s top-notch parts which give you the dependability and peace of mind. The control box has overcharge protection. The self-contained, 10-amp battery recharger system is a solid-state, automatic controller with alarms, light indicators, and warning systems.

The item has an LCD screen that always displays battery voltage along with other helpful information about the system. A set of dry contacts allows the system to connect to a home security alarm, autodialers, etc. If you choose this battery backup sump pump you will find yourself with a reliable, low voltage vertical float switch, an integrated DC pump discharge check valve and additional AC pump check valve, tee, and an adapter.

The included battery case will accommodate maximum battery dimensions of 13″ L x 71/2″ W x 91/2″ H (33 cm L x 19 cm W x 24 cm H) and fits all group size 27, 29 and 31 batteries. The 12-volt battery is not included. This charger uses the latest switch-mode technology available. This allows for an extremely efficient charger in a compact design. It is hand-built & 100% tested in the USA and if that doesn’t reassure you, we don’t know what will.

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6. PumpSpy Battery Back-Up Sump Pump

PumpSpy Technology Battery Back-Up Sump PumpPumpSpy is the only system that alerts homeowners that their sump pump has a problem BEFORE flooding can occur. PumpSpy products connect automatically to Remote Monitoring Service that pays attention to your sump pump system constantly. This way PumpSpy computers provide you with support because they always look for any probable issues. If there is any kind of problem, PumpSpy immediately emits an alert via text message or a push notification in your PumpSpy mobile app.

This battery backup sump pump is also assembled in the USA. The quality automotive grade components and electronics on circuit boards are sealed in waterproof epoxy. The PumpSpy Battery Backup pump will drain a 20-gallon basin in a mere 38 seconds! The system automatically recharges the battery when power is restored.

This unit works with any 120-volt primary sump pump you simply have to plug your sump pump into the 120-volt outlet.  Another incredible thing about this item is that it activates automatically when there is a main sump pump failure or power outage.

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Pros & Cons Of Battery Backup Sump Pump Systems

We wouldn’t want to have it any other way around. Our goal is to tackle the topic right away and this is why we will jump in the pros & cons section. After the reviews you just read, a quick summary is never in the way.


  • You get several hours of additional protection – this is by far the most important quality of your battery backup sump pump. It will always be there for you intervening only when needed.
  • If your battery backup is a power converter and control system, it will allow the main pump to continue working at full speed if the power goes out. The best part is, you might even not notice at all. The silent part is a huge advantage and the fact that no action will be required by you is simply a fantastic convenience.
  • The power converter and control system does not take up any additional room in the sump pit – space is truly valuable to most homeowners. The more appliances you buy, the less space you have. This is not the case here, however, as you will quickly find out that a backup system will not be in the way at all.
  • You will feel safer and definitely save money by protecting your basement – the economic aspect also matters. We can’t even begin to fathom the price will have to pay if water damage occurs to the house’s foundations. Not to mention that floods will also damage the other electrical appliances that you keep inside your basement. The best way to back up a sump pump is to invest in a battery.


  • If you have a DC-powered secondary pump and the power goes out, the secondary pump will not be able to match the capacity needed because the secondary pump is usually not as powerful as the primary.
  • If your system is a power converter/control system and the pump failure is mechanical this will not activate the battery backup.

Why Should You Buy Battery Backup  Sump Pump?

battery backup sump pump reviews

Many users will ask themselves “Is a battery backup sump pump worth it?”. Well, sure it is!  Have you heard the phrase “always have a plan B”? Have you ever had a need to go to it? Well, the battery backup sump pump is exactly this – your plan B. You need it when there is a risk of a power outage and a flood at the same time.

It is certain that you will sleep well if you have the best way to back up a sump pump. You can use it to unwater your basement or for draining a pool. Such a device will serve also as a backup for small, normal or portable main sump pumps. Be confident that these devices are made as an emergency backup system to help your regular sump pump. Its main function is to automatically begin pumping anytime when the float switch is activated.

You can count on them because of their easy maintenance and especially easy operation when it is time to get rid of the unwanted water. Battery backups for sump pumps have a lot of benefits, including the fact that they don’t take up a lot of space.

The risk of a flood bears a lot of dangers and you ought to be aware of them. As effective as the sump pump alarm is no one wants bad surprises in their home, right? Having one of the best sump pump alarm will sometimes malfunction so we have to be ready.

The truth is that such a sump pump isn’t very necessary in every house, but… there is always a “but”, it has saved many homes from water damage and floods. This device is worth it, saves you money and takes care of your worries during the rainy seasons. Is there anything better than this?



best battery backup sump pumpWhen you have chosen the best sump pump and you have installed it as the main sump pump, setting up this backup wouldn’t be something new for you. But if it’s your first time we prepared some easy steps for beginners to facilitate you. Here are they:

  1. Make sure the charger is not plugged in the wall outlet. No one wants to get an electric shock. Right?
  2. Take off the protector of the battery box.
  3. Use a piece of cardboard or some nonmetallic material to fan the area around the top of the battery. It helps to remove the hydrogen gas that the battery could have emitted. We kindly remind you to always be extra careful with gases, and not only this type. You must beware of all gases.
  4. After you have unscrewed the wing nuts, remove the battery cables. Use a wire brush or battery post terminal cleaner to clean the battery posts.
  5. After the battery posts are clean, it’s time for the ring connectors on the ends of the battery wires. Use a stiff brush or sandpaper to clean the corrosion off of them.
  6. After this, install the new battery cables and make sure the wingnuts are tight enough.
  7. Plug the charger into the wall outlet. And that’s it – enjoy it!

Easy and fun. Isn’t it?


It works really simple as the pump will begin pumping after the water has risen in the sump pit and has activated the float switch. As with other regular batteries, this one can also “grow old”. When the time comes it should be replaced with a new one.

Corrosion is something very often seen on battery terminals or cable rings, or both of them. This is a process that doesn’t let the battery charge properly or work effectively. It is good to check the cables from time to time along with the terminals for this annoying thing. You can clean the corrosion with sandpaper or sandblasting, or with the good old Cola.

Types Of Battery Backup Sump Pump Systems

There are two types of battery backup for existing sump pumps – DC, which means Direct Current and AC/DC which is Alternating and Direct Current. The latter switches to Direct Current battery power when the Alternating Current power is out. When the main pump fails it will switch on too. While the power is on, and everything with the electricity is okay, some pumps can run off the AC   without using up the battery. Note that some units that run DC will always function off the battery power.

Another kind of batteries are also deep-cycle ones. It is said that they are maintenance-free batteries. These are sold as marine or solar batteries, lead-acid batteries, also known as “wet cells”. Wet-cell batteries were used in vehicles too. If you have such a unit, you must add distilled water to keep the cells from drying and preventing damage.

Choosing the right kind of Backup system is very important. We advise you to not be quick about your decision unless you are in a hurry of course. Just look for different results and other tips for choosing a sump pump battery backup system. Also, you can compare Sump Pump Generators and Battery Backups, right?

Tips That Every Battery Backup Sump Pump Owner Should Know

Firstly, you must know that there are several causes for power failure, and in case of it, the battery backup sump pump will save your day. The most common cause of such a problem is a power outage by your electric company. During this bad time, the backup system will automatically switch to battery power and protect your basement from flooding, as we have already stated above.

Additionally, depending on the type of unit, you should never place or store a battery directly on the ground. This will drain the battery and shorten its life. Instead, if the battery doesn’t have its own stand or a case you could use an old battery box. Make it a habit to check and clean your battery terminals to avoid the corrosion we talked about earlier.

Best Battery Backup Sump Pumps Comparison Chart

WAYNE ESP25 12 Volt Battery Back-Up Sump Pump System with Audible Alarm
$$7.2 x 5 x 10"13.5 pounds1.003300 GPH
PumpSpy Technology PS1000 12V DC Battery Back-Up Sump Pump
$$$$16.5 x 10.2 x 15.8"14.3 pounds0.33 HP3000 GPH
Basement Watchdog BWE Basement Watchdog Emergency Back-Up Sump Pump
$17 x 10 x 11.7"9 pounds1.001000 - 2000 GPH
Superior Pump 92900 Powered Battery Back Up Sump Pump With Tethered Switch
$$13 x 10 x 16.5"12.5 pounds1/3 HP1380 GPH
Pump Sentry 822 PS- Emergency Power for Sump Pumps by Sec America by SEC America
$$$$$22.1 x 11 x 7.1"16.75 pounds
1/3 HPN/A
Zoeller 508-0005 Aquanot 508 Battery Back-Up System
$$$8.5 x 8.5 x 10.5"16.3 poundsN/A2340 GPH

Wrap up

Well here we are – you successfully have come to the end of our buying guide to getting the best battery backup sump pump on the market. We sincerely hope to have helped you with our tips, information and most importantly with our battery backup sump pump reviews.

We would be so happy if you find this article useful and if you do please share this buying guide with others so that they can get some useful info as well. If you want to highlight anything that we might have missed in our sump pump reviews, don’t think about it twice – leave a comment or send us an email.

But wait, we are not finished yet! Do not forget to check some of our other articles devoted to picking the best sump pump for your household. Thanks for reading and as always – stay put!

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