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Top-10 Sump Pump Battery Backups
Loved in the USA

Handpicked for quality & trusted by thousands of customers
#1
Top Rated in the USA
Zoeller 50
Zoeller

Born in the USA

Zoeller 508-0006 Aquanot 508 ProPak53 Preassembled Sump Pump System with Battery Back-Up

Fast Delivery
10.0
166 reviews

Solid Value from a Trusted Brand

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1 376 bought in past month
#2
The Baseme
THE BASEMENT WATCHDOG

Born in the USA

The Basement Watchdog Big Dog CONNECT Battery Backup Sump Pump - Up to 3,500 GPH - WiFi-Capable w Add-on Module (BWD12-120C)

Fast Delivery
9.4
84 reviews

Solid Value from a Trusted Brand

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1 274 bought in past month
Last Purchases
B***n
Chicago, IL
4d ago
D***a
Philadelphia, PA
2d ago
Wi***am
San Francisco, CA
1d ago
#3
THE BASEME
THE BASEMENT WATCHDOG

Born in the USA

THE BASEMENT WATCHDOG Model BW-27AGM Maintenance Free (AGM) Sump Pump Battery

Fast Delivery
9.1
666 reviews

Solid Value from a Trusted Brand

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1 172 bought in past month
Impressive build and very reasonably priced.
JenniferCharlotte, NC
#4
WAYNE - 1
Wayne

Born in the USA

WAYNE - 1 2 HP Sump Pump with Integrated Vertical Float Switch and 12 Volt Battery Back Up Capability, Battery Not Included - Up to 5,100 Gallons Per Hour - Heavy Duty Basement Sump Pump System

Fast Delivery
9.1
822 reviews

Solid Value from a Trusted Brand

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1 070 bought in past month
Curated products trusted bytrust us brands
#5
The Baseme
THE BASEMENT WATCHDOG

Born in the USA

The Basement Watchdog Big Combo CONNECT Preassembled Primary & Battery Backup Sump Pump System - WiFi-Capable w Add-on Module (CITS-50)

Fast Delivery
8.8
289 reviews

Solid Value from a Trusted Brand

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968 bought in past month
#6
Zoeller 50
Zoeller

Born in the USA

Zoeller 508-0005 Aquanot 508 Battery Back-Up System

Fast Delivery
8.5
190 reviews

Solid Value from a Trusted Brand

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866 bought in past month
#7
The Baseme
THE BASEMENT WATCHDOG

Born in the USA

The Basement Watchdog Combo Preassembled Primary & Battery Backup Sump Pump System w Monitoring Controller (CITE-33)

Fast Delivery
7.9
250 reviews

Solid Value from a Trusted Brand

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764 bought in past month
#8
Superior P
Superior Pump

Born in the USA

Superior Pump 92911 Backup Cast Iron Primary Sump Pump and Backup Pump Kit, 1 2 HP, Black

Fast Delivery
7.9
282 reviews

Solid Value from a Trusted Brand

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662 bought in past month
#9
The Baseme
THE BASEMENT WATCHDOG

Born in the USA

The Basement Watchdog Special CONNECT Battery Backup Sump Pump System - Up to 2,600 GPH - WiFi-Capable w Add-on Module (BWSP)

Fast Delivery
7.6
307 reviews

Solid Value from a Trusted Brand

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560 bought in past month
#10
American F
THE BASEMENT WATCHDOG

Born in the USA

American Fluorescent Bw4000 1730 Gallons Per Hour Basement Watchdog Combination Primary and Back-Up Pump System

Fast Delivery
7.0
169 reviews

Solid Value from a Trusted Brand

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458 bought in past month

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THE BASEME
THE BASEMENT WATCHDOG

Born in the USA

THE BASEMENT WATCHDOG Model DFK961 1 3 HP Combination Submersible Sump Pump with Cast Iron Cast Aluminum Primary Sump Pump and a 24 Hour a Day Monitoring Emergency Battery Backup Sump Pump System

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114
verified reviews

Item still has Pre-Tariff price

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356 bought in past month
Basement S
Generic

Basement Sentry by Zoeller STBB200 Battery Backup Sump Pump System Plus 45 GPM, Green

Fast Delivery
13
verified reviews

Solid Value from a Trusted Brand

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254 bought in past month
The Baseme
THE BASEMENT WATCHDOG

Born in the USA

The Basement Watchdog Emergency Battery Backup Sump Pump - Up to 2,000 GPH - 24 7 Monitoring Controller (BWE)

Fast Delivery
677
verified reviews

Solid Value from a Trusted Brand

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152 bought in past month
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Liberty Pumps

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Liberty Pumps 441 Battery Back-Up Emergency Sump Pump System

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Our Top Picks

#1

Winner

Zoeller 508-0006 Aquanot 508 ProPak53 Preassembled Sump Pump System with Battery Back-Up

Rating
10.0
Chosen by1,376
Pump Compatibility
Alarm System
Ease of Installation

Most important from
166 reviews

Pump Compatibility
The main pump and backup system perform seamlessly, providing a dependable solution for sump applications.
Alarm System
Works flawlessly, with the side pump and alarm functioning exactly as they should.
Ease of Installation
The installation was straightforward, even for a first-timer, and everything fit perfectly without any cutting.

The Zoeller 508-0006 Aquanot 508 ProPak53 is a dependable sump pump battery backup system designed to protect your home from flooding when the primary pump fails, especially during power outages. One of its key strengths is the fully assembled setup, which makes installation straightforward for most users. You get a 115-volt pump and a backup system that includes essential components like a check valve and float switch, ensuring that you have everything you need in one package.

The battery capacity and the solid-state automatic charger/controller are noteworthy features that enhance its reliability. The system also comes with an alarm, light indicator, and warning system that can alert you in case of issues, providing an extra layer of protection. With a maximum flow rate of 43 gallons per minute, it can handle a good amount of water, making it suitable for various sump applications.

There are a few considerations to keep in mind. The need for a 12V battery can be a drawback if you haven’t invested in one yet, and the runtime will depend on your battery's capacity, which could vary based on how often the backup pump is engaged. Furthermore, while the pump is efficient, some may find the maximum flow rate slightly lower compared to other models on the market, which could be a concern for larger basements or more significant water issues.

Rating
10.0
Chosen by1,376
Pump Compatibility
Alarm System
Ease of Installation

Most important from
166 reviews

Pump Compatibility
The main pump and backup system perform seamlessly, providing a dependable solution for sump applications.
Alarm System
Works flawlessly, with the side pump and alarm functioning exactly as they should.
Ease of Installation
The installation was straightforward, even for a first-timer, and everything fit perfectly without any cutting.
#2

The Basement Watchdog Big Dog CONNECT Battery Backup Sump Pump - Up to 3,500 GPH - WiFi-Capable w/Add-on Module (BWD12-120C)

Rating
9.4
Ease of Installation

Most important from
84 reviews

Ease of Installation
Works great and comes with everything needed for installation, except the battery.

THE BASEMENT WATCHDOG Model BWD12-120 Big Dog CONNECT is a versatile battery backup sump pump system suited for homeowners looking to protect their basements from flooding. It offers a robust pumping capacity of 3,500 GPH at 0 ft. and 2,200 GPH at 10 ft., making it efficient for managing significant water flow during power outages. The smart WiFi-capable monitoring controller is a standout feature, allowing real-time alerts via text, email, or push notifications if paired with the optional WiFi module (sold separately). This can be particularly useful for those who travel frequently or are away from home often. The powerful 20-Amp charger ensures quick charging and longevity of the battery, although the battery itself is not included and must be purchased separately. Compatibility with both AGM and wet-cell batteries adds flexibility, and the option to connect two standby batteries can extend the run time, providing additional peace of mind.

The system also integrates well with home security systems, further enhancing its utility. On the downside, the initial setup might seem complex to some users, and the need to buy additional components like batteries and WiFi modules can increase the cost. The user-friendly control panel, with its continuous monitoring and alarm system, helps in identifying and solving issues promptly, but it’s essential to ensure the system is tested and maintained regularly.

Rating
9.4
Ease of Installation

Most important from
84 reviews

Ease of Installation
Works great and comes with everything needed for installation, except the battery.
#3

THE BASEMENT WATCHDOG Model BW-27AGM Maintenance Free (AGM) Sump Pump Battery

Rating
9.1
Battery Capacity
Pump Compatibility
Charging Time

Most important from
666 reviews

Battery Capacity
This battery is a lifesaver, especially during power outages that cause basement flooding.
Pump Compatibility
Works perfectly with the Watchdog sump pump system and was easy to install.
Charging Time
Super secure packaging and comes fully charged, ready for use.
Ease of Installation
Works perfectly with the Watchdog sump pump system and was easy to install.

The BASEMENT WATCHDOG Model BW-27AGM is a maintenance-free sump pump battery, which means you don't need to add any battery fluid or distilled water, making it hassle-free to use. It offers significant protection duration, with up to 40 hours for the Big Dog system, up to 48 hours for the Special + and Big Combination systems, and up to 80 hours for the Emergency and Combination systems, assuming a 10% duty cycle. This makes it highly reliable during power outages.

The battery is compatible with various Basement Watchdog sump pump systems, including older versions purchased before 2014, provided they have a Remote Terminal. However, using it with older non-compatible systems might trigger false alarms, which is something to consider. The battery is a sealed lead acid type, which is known for its durability and safety.

The ease of installation is generally good, but its weight of 22.6 kg (about 49.7 pounds) might make handling it a bit challenging for some users. It comes with a 12V battery included, which is convenient. In terms of drawbacks, the battery's weight could be a factor, and it may not be compatible with all older systems, possibly causing false alarms. For those with compatible systems, it provides a robust and maintenance-free power backup solution.

Rating
9.1
Battery Capacity
Pump Compatibility
Charging Time

Most important from
666 reviews

Battery Capacity
This battery is a lifesaver, especially during power outages that cause basement flooding.
Pump Compatibility
Works perfectly with the Watchdog sump pump system and was easy to install.
Charging Time
Super secure packaging and comes fully charged, ready for use.
Ease of Installation
Works perfectly with the Watchdog sump pump system and was easy to install.

Buying Guide for the Best Sump Pump Battery Backups

Choosing the right sump pump battery backup is crucial to ensure your basement stays dry during power outages or pump failures. A sump pump battery backup system provides an additional layer of protection by keeping your sump pump running when the primary power source is unavailable. To make an informed decision, you need to understand the key specifications and how they relate to your specific needs. Here are the essential specs to consider when selecting a sump pump battery backup system.
Battery TypeThe battery type is important because it determines the longevity and reliability of the backup system. Common types include lead-acid, AGM (Absorbent Glass Mat), and lithium-ion batteries. Lead-acid batteries are cost-effective but require regular maintenance. AGM batteries are maintenance-free and have a longer lifespan than lead-acid batteries. Lithium-ion batteries are the most advanced, offering the longest lifespan and highest efficiency, but they are also the most expensive. Choose a battery type based on your willingness to perform maintenance and your need for long-term reliability.
Battery CapacityBattery capacity, measured in ampere-hours (Ah), indicates how long the battery can power the sump pump. A higher capacity means the battery can run the pump for a longer period during a power outage. For small basements or areas with low water inflow, a battery with a capacity of 40-60 Ah may suffice. For larger basements or areas with high water inflow, consider a battery with a capacity of 75-100 Ah or more. Assess the size of your basement and the typical water inflow to determine the appropriate battery capacity for your needs.
Pump CompatibilityPump compatibility ensures that the battery backup system works seamlessly with your existing sump pump. Some battery backup systems are designed to work with specific brands or models, while others are more universal. Check the specifications of your sump pump and the battery backup system to ensure they are compatible. If you are unsure, consult the manufacturer or a professional to avoid any compatibility issues.
Run TimeRun time refers to how long the battery backup can keep the sump pump running during a power outage. This is crucial for areas prone to extended power outages. Run time is influenced by battery capacity and the power consumption of your sump pump. For short outages, a run time of 4-6 hours may be sufficient. For longer outages, look for systems that offer 8-12 hours or more of run time. Consider the frequency and duration of power outages in your area to determine the necessary run time.
Charging TimeCharging time is the duration it takes for the battery to recharge fully after being depleted. Faster charging times are beneficial as they ensure the battery is ready for the next power outage sooner. Charging times can vary from a few hours to over 24 hours, depending on the battery type and charger. If you live in an area with frequent power outages, opt for a battery backup system with a shorter charging time to ensure continuous protection.
Alarm SystemAn alarm system alerts you when the battery backup is activated or if there is an issue with the sump pump. This feature is important for timely intervention and maintenance. Alarms can be audible, visual, or even connected to your smartphone for remote notifications. Choose a system with an alarm that suits your preferences and ensures you are promptly informed of any issues.
Ease of InstallationEase of installation refers to how simple it is to set up the battery backup system with your existing sump pump. Some systems are designed for DIY installation, while others may require professional assistance. If you are comfortable with basic electrical work, a DIY-friendly system may be suitable. Otherwise, consider a system that offers professional installation services to ensure proper setup and functionality.

FAQ