Best Battery Backup Sump Pump for your Basement

Water in the basement can be a nightmare for many homeowners. A sump pump is important to avoid a flooded basement during heavy rain seasons. If the rain is heavy and there is a power failure, your electric sump pump might fail to prevent the basement from flooding. During storms, it is very usual to undergo a local-based power outage. So, you need the best battery backup sump pump.

This sump pump can be used in combination with its battery, which is usually sold separately to the backup sump pump. With a well-charged battery, the sump pump continues when the float switch is triggered whether the power supply is still on or not.

With very many backup sump pumps on the market, it is hard to determine which one is good for your needs. Then, there is the study that you have to do, which might not even help you get the best battery backup sump pump. To help you not waste your time, we have listed five backup sump pumps and the factors to consider when choosing the best battery backup sump pump. Let us begin!

1. Wayne ESP25 Upgraded Backup Sump Pump System

best battery powered backup sump pump

Wayne ESP25 Upgraded backup system comes when it’s already assembled, so you don’t have to worry about that. This backup system is made of epoxy coated steel body and cast-iron base so that it can serve you for a long period.  This backup system can handle a flow up to 2900 gallons per hour at 0 of the head. The performance of this is exceptional if your main pump fails; it will still keep your basement dry nevertheless of the situation.

When Wayne ESP25 Upgraded backup system is active, there will be an audible alert from the alarm to notify you. This pump has a LED display, which is easy to read and shows the pump readiness. Wayne ESP25 requires a 75-amp hour (Ah) battery, which is not included. Although it is meant to last for years, it comes with a 2-year warranty.

Wayne ESP25 Upgraded system happens to be one of our best battery backup sump pump systems. Some users complain of lack of volume control for the alarm, which is very loud and annoying over time. However, you can use DYI knowledge to reduce the loud volume.


  • 2-year warranty coverage
  • Pre-assembled
  • The flow rate of 2900 gallons per hour
  • LED display shows system readiness
  • Audible alarm
  • Very quiet when operating
  • Easy to install


  • Requires a heavy-duty 75 amp-hour battery
  • Cannot control the volume
  • Not durable

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2. Zoeller 508-0006 Aquanot 508 ProPak53 Back-up Sump Pump System

Zoeller 508-0006 Aquanot 508 comes when it’s already assembled and ready to install in your basement. It is made of plastic and high-quality metal materials so that it lasts for long. This pump includes model 508 Aqua not, model 53 115-volt pump, 115-volt DC back up system with pump, check valve, float switch and piping. It can handle 2,580 gallons per hour.

The sump pump’s control box has overcharge protection. Moreover, the self-contained, 10A battery recharge system is fully in a solid-state, automatic controller with alarms, warning systems and light indicators. It’s equipped extra protection when the main AC pump fails because of power outages.

Zoeller 508-0006 Aquanot 508 can be connected to 1-1/2″ PVC pipe. This pump has an LCD that always shows battery voltage and other important information about the system. It requires a 12-volt battery, which is not included. Its charger uses the recent switch-mode technology available.

One special feature that makes this pump system the best battery back up sump pump is that it can connect to your home alarm or auto-diallers. This way, you can hear when it goes off, even if you are not close to the basement. The pump system has 3-year warranty coverage.


  • 3-year warranty coverage
  • The flow rate of 2580 gallons per hour
  • Come fully assembled
  • Overcharge protection
  • The system can connect to home security and auto-dialers
  • Runs off DC or AC power
  • Light indicator for convenience
  • Audible alarm
  • LED display shows battery voltage and other information


  • The battery is not included
  • Quite noisy
  • Not easy to install and operate

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3. The Basement Watchdog Emergency Back-up Sump Pump System

The basement watchdog emergency backup sump pump system has a built-in monitoring system, an energy- effective pump, patented dual float switch and a user-friendly controller monitors battery which automatically shields your basement when need be.

As far as the flow rate is concerned, this pump system can handle up to 2000 gallons per hour. Besides, the pump system comes with automatic sensors for both the battery and the pump, the indicator lights will let you know the performance and health of the machinery every time.

This battery backup sump pump is fitted next to the primary AC pump and automatically starts pumping during power outages, when water flow surpasses the capacity of the primary pump or when the primary pump fails. The good thing is, it has a 2-year warranty.

This battery backup sump pump monitoring system alarm alerts you when maintenance or an issue arises. A LED display panel indicator will find the issue that set off the alarm and the necessary action to take. The pump is compatible with both maintenance-free AGM and wet cell batteries although the batteries are not included in the package.

The basement watchdog emergency backup sump pump system happens to be one of the best battery backup sump pump system because it is compact and lightweight. Thus, in case you have a tight space in your basement, you can still manage to install it inside without any issue.


  • The flow rate of 2000 gallons per hour
  • 2-year warranty coverage
  • Automatic sensors monitor both the battery and the pump
  • Intuitive LED indicators
  • Lightweight and compact design
  • Provides days of intermittent pumping power on a single battery charge
  • Easy to install


  • The charger may stop working properly in rare events
  • May not work with standard batteries

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4. PumpSpy Technology PS1000 12V DC Battery Backup Sump Pump

If you are searching for a battery backup sump pump systems that are both useful and high-tech, then PumpSpy is the gadget for you. When compared with other units on this list, PumpSpy is the next generation of the sump pump. What makes it the best battery back -up sump pump is the presence of Wi-Fi. Furthermore, it has its own cellular antenna so you don’t need to use your home’s Wi-Fi for it to work.

This backup sump pump comes with its own app that notifies you when the machine is switched on and when the battery is low or when you require replacing it. Moreover, the sensors on this pump scan automatically at all times so, this information is more important especially if you are not at home. There is free monitoring included with zero monthly charges or subscriptions needed.

You can connect the sensor system to your main pump too, is that not a great thing? By doing so, you will get updates on both pumps and how they are functioning. If the main pump fails, you will get both an email and a text about it so that you can act immediately.

PumpSpy PS 1000 can handle a flow rate of 1625 gallons per hour at 15″ lift.  120-volt battery from the main sump pump is the power source. This backup sump pump activates automatically in case of primary sump pump failure or power outage also the system continues functioning when the power goes out.

Although this backup sump pump is more expensive, the high-tech feature makes up for the price tag. You can be sure the cost will be worth it after the purchase. This gadget has 2-year warranty coverage.


  • 2-year warranty
  • 1625 gallons per hour at 15″ lift
  • Smart sensors can alert you via text or email
  • Has 24/7 free system monitoring
  • Automatically scans itself and your main pump
  • Intuitive LED indicators and menu display
  • Automatically recharges battery
  • Integrated app for more alerts and customization


  • Might have issues connecting to PumpSpy system
  • Doesn’t include battery

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5. Superior Pump 92900 12V Battery BackUp Sump Pump

This backup sump pump is made of thermoplastic with a 10 ft. power cord length. It is drafted to work with 12 volts, RV batteries. It can still work with either a sealed AGM battery or a flooded cell. This sump pump can handle up to 1,380 gallons per hour. Keep in mind that this unit isn’t meant to replace your main sump pump but to provide a brief back up during power outage or malfunctions with the main pump.

This backup sump pump doesn’t run on both DC and AC power, it just runs off the battery. On the contrary, it does make the installation process easier since you don’t need to worry about plugging into an outlet. Nevertheless, it also means that you will be needed to recharge the battery regularly.

During an emergency or unexpected long power failure, you can use your automobile battery. You only need to replace the deep\ cycle battery fast as the automobile battery will be drained remarkably quickly due to the charge and discharge pattern. The system has a tethered float switch for automatically switching the pump on and off. The backup sump pump comes with an LED display, which shows you how much charge is left on the battery.

Although the pumping rate of this backup sump pump is not the best we have seen, it still manages to be one of our best backup sump pump systems thanks to the design and the compact size. It can still fit in a tight space in the basement.


  • 1,380 gallons per hour
  • Tethered float switch for reliability
  • Rugged thermoplastic protection
  • Compact size and design
  • Easy to use menu controls


  • Doesn’t use AC power

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Factors to Consider When Choosing the Best Battery Backup Sump Pump

1. Flow Rate

Always keep in mind that the backup pump is not designed to take the place of the primary model. Therefore, having a model with the same flow rate as the primary model can be the best idea, just in case your primary pump fails.

When thinking of the flow rate, consider the amount of lift needed in your setup too. Because these pumps are drafted to draw water out of the basement, so you will possibly have to be moving it vertically by some few feet. These matters too when choosing the battery backup sump pump.

In some cases, the flow rate is usually the number of gallons moved at zero feet. The further vertical lift needed, the lower the number of gallons will get. You need a backup pump that can do at least 600 gallons per hour to make sure that it will always keep your basement dry. Luckily, most of the backup sump pump surpasses that therefore you should be fine.

2. Technology

When choosing the best battery backup sump pump consider the technology that comes with it. Choose one with an alarm so that you can stay aware of any issue with the pump. In case you end up buying a backup sump pump without an alarm, don’t worry because you can install a new one in the future.

Choose a backup sump pump that is compatible with a vertical float switch. The best electronic switches are the one with an internal sensor and detect water. When the water levels drop that pulls down the lever, which turns off the pump. Besides, when the water levels rise in the sump pit, the alarm will sound off.

Consider the piggyback prong too; if there are one or two cords in the back of the backup sump pump, you can assess them yourself. Examine them for piggyback compatibility. A tether float switch will initiate the pump when the float rises.

The piggyback prong is an incredible addition, for it controls the submersible pumps that do not have an automatic feature to control themselves. It is perfect for a pump with a failed switch. This low-cost alternative is better than having to replace the whole pump.

3. Material Used

Consider the material housing the battery. The best battery backup sump pump has thick thermoplastic. Also when choosing, you need to be aware of the material, whether it is waterproof or not. In case it isn’t, then it is your responsibility to place the battery above the pump.  The material should repel water so that the pump can still function when the basement flood.

Another thing concerning the material is whether it is rust-resistant. Cast iron and steel need to have coverings to shield them from rusting, but that can wear off over a period. Plastic housings are considered the best because they cannot corrode even though they are more prone to damage.

4. AC and DC power

We prefer backup pumps that can use the battery as well as runoff AC power. The reason for this is that you can lower the inclusive wear and tear on the battery since the pump will function when power is accessible.

The other advantage is that when the power resume, the system automatically recharges the battery. In case you had a pump that was relying on battery only, then you would have to recall doing this yourself. In some situations, if you did not even know that the pump is active, then you might not have the knowledge that the battery is drained, which could place you in a bad situation next time.

The best battery backup sump pump should have both AC and DC power inlet so that they can still function in case of a power outage.


A flooding basement is expensive, frustrating and the last thing any homeowner wishes to come home to, however, without the information of battery backup for the sump pumping system responsible for eliminating water, in cases such as power outage, the unwanted occurrence will continue taking place. We did look at the best battery backup sump pump in the market and factors to consider when choosing them.

Before you choose, first consider the flow rate of the unit, how many gallons can it handle per hour and the amount of lift needed? Then you can consider the technology applied, the material used and whether it functions on both AC and DC power.

Wayne ESP25 Upgraded is the best battery back up sump pump in the market. This is after considering its exceptional performance. This unit can handle 2,900 gallons per hour, which is high compared to other backup sump pumps. The technology of this unit is also great.

If you are looking for both high-tech and helpful battery backup sump pump, then we recommend PumpSpy PS1000. This unit is the next generation of the sump pump. The technology is on another level. The good thing, the system will notify you via text or email in case of the primary pump fails.

If you don’t mind about the cost of this PumpSpy PS1000, go ahead and purchase it be sure the price will be worth it. We hope this article was helpful.