10 Best Sump Pump Battery Backups 2025 in the United States

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 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 Combo Model CITE-33 is a sump pump system that includes both a primary and a backup pump. One of its main strengths is ease of installation, as the system comes preassembled and preplumbed. This feature makes it user-friendly, especially for those who might not be very handy. The primary pump has a strong capacity, being able to pump 3,100 gallons per hour (GPH) at a 10-foot lift, and 3,720 GPH at a 0-foot lift, which makes it efficient for handling large volumes of water.

The battery backup, although not as powerful as the primary pump, still offers a respectable 1,000 GPH at a 10-foot lift and 2,000 GPH at a 0-foot lift. This ensures that your basement stays dry even during power outages. The system also provides days of intermittent pumping on a single battery charge, which is quite reliable during extended periods without power. Additionally, the 24-hour monitoring controller and dual float switches offer extra protection by constantly checking the fluid levels and ensuring the system is functioning correctly.

However, the charging system is a bit slow with a 0.4-amp charger, which might take longer to fully charge the battery. Another drawback is that the battery itself is not included, which means you will have to purchase it separately. Considering the compact design, it fits in pits with diameters as small as 12 inches, making it a versatile option for different basement setups. This sump pump system is a solid choice for homeowners looking for reliable basement flooding protection, with the added peace of mind of a battery backup.