We Use CookiesWe use cookies to enhance the security, performance, functionality and for analytical and promotional activities. By continuing to browse this site you are agreeing to our privacy policy
Hero

Top-10 Sump Pump Battery Backups
Loved in the USA

Handpicked for quality & trusted by thousands of customers
#1
Top Rated in the USA
THE BASEME
THE BASEMENT WATCHDOG

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

Fast Delivery
9.9
568 reviews

Solid Value from a Trusted Brand

View Deal
1 251 bought in past month
#2
WAYNE - 1/
Wayne

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

6%OFF

Fast Delivery
9.8
1 748 reviews

Item still has Pre-Tariff price

View Deal
1 149 bought in past month
Last Purchases
E***a
Chicago, IL
4d ago
Da***el
Houston, TX
2d ago
A***n
Miami, FL
16h ago
#3
THE BASEME
THE BASEMENT WATCHDOG

THE BASEMENT WATCHDOG Big Combo CONNECT Model CITS-50 ½ HP Primary and Battery Backup Sump Pump System with Smart WiFi-Capable and 24-Hour-a-Day Monitoring Controller

Fast Delivery
9.7
258 reviews

Solid Value from a Trusted Brand

View Deal
1 047 bought in past month
Premium quality and flawless performance. My best purchase, worth every penny!
JessyChicago, IL
#4
Zoeller 50
Zoeller

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

Fast Delivery
9.5
158 reviews

Solid Value from a Trusted Brand

View Deal
945 bought in past month
Curated products trusted bytrust us brands
#5
THE BASEME
THE BASEMENT WATCHDOG

THE BASEMENT WATCHDOG Model BWSP 2,600 GPH at 0 ft. and 1,850 GPH at 10 ft. Special CONNECT Battery Backup Sump Pump System with WiFi-Capable 24-Hour-a-Day Monitoring Controller

Fast Delivery
9.3
297 reviews

Solid Value from a Trusted Brand

View Deal
843 bought in past month
#6
THE BASEME
THE BASEMENT WATCHDOG

THE BASEMENT WATCHDOG Model BWD12-120 Big Dog CONNECT 3,500 GPH at 0 ft. and 2,200 GPH at 10 ft. Battery Backup Sump Pump System with Smart WiFi-Capable Monitoring Controller and 20-Amp Charger

Fast Delivery
9.1
94 reviews

Solid Value from a Trusted Brand

View Deal
741 bought in past month
#7
Basement S
Generic

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

Fast Delivery
8.8
8 reviews

Solid Value from a Trusted Brand

View Deal
639 bought in past month
#8
Basement W
THE BASEMENT WATCHDOG

Basement Watchdog BWE 1000 Gallons Per Hour Basement Watchdog Emergency Back-Up Sump Pump

13%OFF

Fast Delivery
8.6
640 reviews

Item still has Pre-Tariff price

View Deal
537 bought in past month
#9
Zoeller 50
Zoeller

Zoeller 508-0005 Aquanot 508 Battery Back-Up System

Fast Delivery
8.4
183 reviews

Solid Value from a Trusted Brand

View Deal
435 bought in past month
#10
THE BASEME
THE BASEMENT WATCHDOG

THE BASEMENT WATCHDOG Combo Model CITE-33 1/3 HP Primary and Battery Backup Sump Pump System with 24 Hour a Day Monitoring Controller

Fast Delivery
8.1
212 reviews

Solid Value from a Trusted Brand

View Deal
333 bought in past month

More great picks just for you

Westinghou
Westinghouse

Westinghouse 12V 75AH Battery for Backup Sump Pump, Trolling Motor, Solar System, Mobility Wheelchair, General Use - Deep Cycle Maintenance Free Rechargeable Marine Battery

5%OFF

Fast Delivery
6
verified reviews

Item still has Pre-Tariff price

View Deal
231 bought in past month
Liberty Pu
Liberty Pumps

Liberty Pumps 441 Battery Back-Up Emergency Sump Pump System

Fast Delivery
55
verified reviews

Solid Value from a Trusted Brand

View Deal
129 bought in past month
Zoeller 50
Zoeller

Zoeller 507-0005 Basement Sentry Battery Backup Pump

Fast Delivery
105
verified reviews

Solid Value from a Trusted Brand

View Deal
27 bought in past month
Explore other best-rated products in this category
12V 100Ah
Mighty Max Battery

12V 100Ah SLA Battery Replacement for Zoeller Sump Pump

Fast Delivery
13
verified reviews

Solid Value from a Trusted Brand

View Deal
American F
THE BASEMENT WATCHDOG

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

Fast Delivery
166
verified reviews

Solid Value from a Trusted Brand

View Deal

Our Top Picks

#1

Winner

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

Rating
9.9
Chosen by1,251
Battery Capacity
Pump Compatibility
Charging Time

Most important from
568 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
9.9
Chosen by1,251
Battery Capacity
Pump Compatibility
Charging Time

Most important from
568 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.
#2

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

Rating
9.8
Run Time
Charging Time
Ease of Installation

Most important from
1748 reviews

Run Time
The DC-powered backup pump is a standout feature, capable of running all day and night on battery power without any visible drop in voltage.
Charging Time
Using a high-quality, stand-alone charger is recommended to extend battery life and prevent overcharging.
Ease of Installation
Easy installation with a preassembled design that fits snugly, though the base is quite large and may be a tight fit in smaller sumps.

The WAYNE 1/2 HP Basement Sump Pump System is designed for indoor use, making it a good choice for homeowners looking to keep their basements dry during heavy rains or snow melts. One of its standout features is its impressive pumping capability, able to handle up to 5,100 gallons per hour, which is beneficial for managing large amounts of water quickly. Additionally, the system can remove about 10,000 gallons on a single battery backup charge, ensuring your basement stays dry even during power outages, although you'll need to purchase the battery separately.

Installation is made easy with a preassembled design that allows for drop-in setup in about 15 minutes. This is a big plus for those who aren't very handy, as it requires no drilling or complex setup. The unit has been tested for durability, lasting through a million cycles, which speaks to its reliability over time. The three-year warranty adds to the peace of mind for buyers.

However, there are some considerations to keep in mind. The fact that the battery is sold separately can be inconvenient and adds to the overall cost. Plus, it's important to note that this model is designed strictly for indoor use, which might not suit those looking for a more versatile option for outdoor spaces. With a maximum lifting height of 20 feet, it should meet the needs of most basements, but some may find it lacking in certain extreme conditions.

Rating
9.8
Run Time
Charging Time
Ease of Installation

Most important from
1748 reviews

Run Time
The DC-powered backup pump is a standout feature, capable of running all day and night on battery power without any visible drop in voltage.
Charging Time
Using a high-quality, stand-alone charger is recommended to extend battery life and prevent overcharging.
Ease of Installation
Easy installation with a preassembled design that fits snugly, though the base is quite large and may be a tight fit in smaller sumps.
#3

THE BASEMENT WATCHDOG Big Combo CONNECT Model CITS-50 ½ HP Primary and Battery Backup Sump Pump System with Smart WiFi-Capable and 24-Hour-a-Day Monitoring Controller

Rating
9.7
Ease of Installation

Most important from
258 reviews

Ease of Installation
The compact, all-in-one design makes installation a breeze, taking about an hour, including removing the old system and cleaning up.

The Basement Watchdog Big Combo CONNECT Model CITS-50 is a robust sump pump system that combines a primary pump with a battery backup, making it a strong choice for homeowners concerned about flooding. The ½ HP primary pump is energy-efficient and has an impressive capacity, moving up to 3,540 gallons per hour at a 10-foot lift, which is ideal for handling significant water influx during storms.

One of the standout features is its WiFi capability, allowing users to monitor the pump and its battery status 24/7. This means you can receive real-time alerts on your phone or through email, which is great for peace of mind, especially if you’re not always at home. The included alarm system further enhances this, providing audio and visual warnings for maintenance needs.

When it comes to battery support, this system is versatile, accommodating both maintenance-free AGM and wet-cell batteries. Users can even connect two batteries for extended run time, which is a big plus if you live in an area prone to power outages. The requirement for a separate purchase of the Basement Watchdog CONNECT Module for advanced alerts may surprise some users looking for a fully inclusive system. Additionally, while the installation is generally straightforward, it might still present challenges for those not comfortable with DIY projects.

Rating
9.7
Ease of Installation

Most important from
258 reviews

Ease of Installation
The compact, all-in-one design makes installation a breeze, taking about an hour, including removing the old system and cleaning up.

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