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10 Best Battery-Operated Backup Sump Pumps 2025 in the United States

#1

Winner

10.0 score

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

The BASEMENT WATCHDOG Big Combo CONNECT Model CITS-50 is a robust sump pump system that combines a primary and battery backup pump with WiFi capabilities for constant monitoring. The primary pump's ½ HP Permanent Split Capacitor motor is energy-efficient, offering a significant flow rate of up to 4,400 gallons per hour at zero lift and 3,540 GPH at a 10-foot lift. The backup pump also provides a reliable flow rate, ensuring your basement remains dry even during power outages, with a capacity of 2,600 GPH at zero lift and 1,850 GPH at a 10-foot lift. The system can lift water up to 25 feet, making it suitable for most residential basements.

Rating
10.0
Chosen by1,224
Pump Flow Rate

Most important from
258 reviews

Pump Flow Rate
The pump is extremely quiet compared to the old one, and its power and 'lift' performance are impressive.
#2
10.0 score

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

The WAYNE 1/2 HP Basement Sump Pump System is designed to keep your indoor areas dry during large water inflows, like heavy rain or melting snow. This system boasts a powerful flow rate of up to 5,100 gallons per hour (GPH) and can lift water up to 20 feet, making it suitable for most residential basements. One of its standout features is the battery backup capability, which ensures that the pump can continue to operate even during power outages. However, please note that the required 75 AH battery is not included with the pump and will need to be purchased separately.

Rating
10.0
Battery Capacity
Construction Material

Most important from
1749 reviews

Battery Capacity
Investing in a high-quality, stand-alone battery charger can prolong battery life and ensure reliable performance.
Construction Material
The robust design and construction suggest that this unit will keep basements dry for many years to come.
#3
9.8 score

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

The Zoeller 508-0006 Aquanot 508 ProPak53 is a comprehensive sump pump system designed for clear water applications, especially useful for homes prone to power outages. It includes a primary AC pump and a DC backup pump, ensuring continuous operation when the primary pump fails. The battery-powered backup utilizes a 12V battery, which offers extra protection during power cuts.

Rating
9.8
Construction Material
Alarm System

Most important from
158 reviews

Construction Material
High-quality construction, built to last.
Alarm System
The backup pump activates and alarms exactly as intended.

Top 10 Best Battery-Operated Backup Sump Pumps 2025 in the United States

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Buying Guide for the Best Battery-Operated Backup Sump Pumps

Choosing the right battery-operated backup sump pump is crucial to ensure your basement stays dry during power outages or primary pump failures. These pumps are designed to kick in when your main sump pump stops working, providing an extra layer of protection against flooding. When selecting a battery-operated backup sump pump, it's important to consider several key specifications to ensure you get the best fit for your needs.
Battery TypeThe battery type is important because it determines how long the pump can run during a power outage. Common types include lead-acid and AGM (Absorbent Glass Mat) batteries. Lead-acid batteries are generally less expensive but require more maintenance, while AGM batteries are more durable and maintenance-free. If you need a pump that can run for extended periods without frequent maintenance, an AGM battery might be the better choice.
Battery CapacityBattery capacity, measured in amp-hours (Ah), indicates how long the pump can operate on a single charge. Higher capacity batteries can run the pump for longer periods, which is crucial during extended power outages. For short outages, a battery with lower capacity (around 40-60 Ah) might suffice, but for longer outages, consider a higher capacity battery (80 Ah or more). Assess the typical duration of power outages in your area to determine the right capacity for your needs.
Pump Flow RateThe flow rate, measured in gallons per hour (GPH), indicates how much water the pump can move in a given time. This is important for ensuring the pump can handle the volume of water entering your sump pit. Flow rates can vary widely, from around 1,000 GPH to over 3,000 GPH. If your basement is prone to heavy flooding, opt for a pump with a higher flow rate. For less severe conditions, a lower flow rate may be sufficient.
Pump Head HeightPump head height, or maximum lift, is the vertical distance the pump can move water. This is crucial for ensuring the pump can effectively discharge water from your sump pit to the outside. Typical head heights range from 10 to 20 feet. Measure the distance from your sump pit to the discharge point to determine the necessary head height. If the distance is greater, choose a pump with a higher head height.
Construction MaterialThe construction material of the pump affects its durability and longevity. Common materials include plastic, cast iron, and stainless steel. Plastic pumps are lightweight and less expensive but may not be as durable. Cast iron and stainless steel pumps are more robust and resistant to corrosion, making them ideal for long-term use. If you need a pump that can withstand harsh conditions, opt for cast iron or stainless steel.
Alarm SystemAn alarm system alerts you when the backup pump is activated, which is important for monitoring and responding to potential flooding. Some pumps come with built-in alarms, while others may require a separate alarm system. If you want to be promptly notified of pump activation, choose a model with a reliable alarm system. This feature is particularly useful if you are often away from home.

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