10 Best Sump Pump Battery Backups 2025 in the United States

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.

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.

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.