Best Battery Back Up Sump Pump

The sump pump is used to remove the water that gathers in the water-collecting sump basin. If you have such a basin in the basement, you know how important it is to install a sump pump, ensuring that a flood won’t occur in the basement by using it. But traditional pumps fail when the power goes out due to heavy storms or other reasons, meaning that until the power comes back, they don’t work, and the possibility of a flood becomes imminent. This is where the battery back up pumps shine as they switch to using the power provided by the battery in case of a power failure, thus the possibility of a flood not existing regardless of the circumstances. To find out what are the best sump pumps that come with battery back up on the market at the moment, check out the comparison table below.

Top 5 Battery Back Up Sump Pumps Comparison

1. Zoeller 508-0006 Aquanot 508 ProPack53 2. Wayne WSM3300 3. Wayne WSS30V 4. Wayne ESP25 5. Superior Pump 92900

Product Specifications

Brand Zoeller Wayne Wayne Wayne Superior Pump
Dimensions (L x W x H) 13″ x 7.5″ x 9.25″ 13.5″ x 7.25″ x 9″ 14.4″ x 13.75″ x 13.75″ 16.3″ x 9.3″ x 10.8″ 17.5″ x 10.5″ x 12.5″
Product Weight 40.8 Lbs 13 Lbs 24 Lbs 16.3 Lbs 12.5 Lbs
Compatible Batteries 27, 29, 31 Group Size Batteries Deep Cycle, Wet Cell, Maintenance Free 12V Batteries 40 Amp/Hour or 75 Amp/Hour Deep Cycle Battery 40 Amp/Hour or 75 Amp/Hour Deep Cycle Battery 24 or 27 Group Size Deep Cycle Battery
HP 1/3 1/3 1/2 1/3 1/3
Voltage 12V 12V 12V 12V 12V
Switch Type Low Voltage Vertical Float Adjustable Dual Reed Float Adjustable Reed Float Adjustable Reed Float Tethered Float
Cord Length 9′ 9′ 9′ 6′ 10′
Impeller Type Glass-Filled Thermoplastic Vortex Reinforced Thermoplastic Reinforced Thermoplastic Reinforced Thermoplastic Thermoplastic
Construction Non-Corrosive Cast Iron Corrosion-Resistant Thermoplastic Epoxy-Coated and Rugged Cast Iron Corrosion-Resistant Thermoplastic Corrosion-Resistant Thermoplastic


Discharge Type NPT NPT NPT NPT NPT
Discharge Size 1.5″ 1.5″ 1/2″ 1/2″ 1.25″ or 1.5″
Solids Handling 1/2″ 1/2″ 1/2″ N/A 1/8″
Flow Rate 43 GPM at 5 Ft. Head 3300 GPH at 0 Ft. Head 3840 GPH at 10 Ft. Head 3300 GPH at 0 Ft. Head 23 GPM at 0 Ft. Head
Technology Switch Mode Smart Charging Smart Charging Smart Charging Switch Mode
Continuous Pumping on Fully Charged Battery Up to 7-1/2 Hours Up to 26 Hours Up to 26 Hours Up to 26 Hours Approximately 3 Hours
Working Temperature 40°F – 120°F 33°F – 120°F 33°F – 120°F 33°F – 120°F 32°F – 120°F
Fully Submersible


Control LCD Display Screen LCD Display Screen Electronic Control Panel Electronic Control Panel Electronic Control Panel
Audible Alarm
LED Indicator Lights AC Power, Charged, Charging, Low Battery, High Water, Alarm Off Low Charge, Partial Charge, Full Charge, Power Fault Low Charge, Partial Charge, Full Charge, Power Fault Charge Status Indicators, Power Fault
Automatic Operation
Other Features Aluminum Seal Pocket Sump Minder Microprocessor Leak Free Polypropylene Float Bottom Suction Plus Filter Design Clog Resistant Impeller
Cooling Plate Voice Alert to Up to 3 Phones Two Heavy-Duty Check Valves Heavy-Duty Check Valves Universal Check Valve
Legs AC Pump Check Valve Top Suction Design Automatic Low Voltage Shut-Off
Battery Burn-Out Protection Connects to Standard Telephone Lines Self-Priming
Overcharge Protection Thermally Protected PCS Motor
AC Pump Check Valve
Quick Disconnect Discharge


Product Warranty 3 Years 2 Years 5 Years 2 Years 1 Year
Customer Support
User Manual

Important Details that You Need to Know

The sump pump has the role of removing the water that accumulates in the sump basin that is usually found in basements. There are a lot of situations that lead to the accumulation of dangerous water levels in this basin, the most common being drains of the waterproofing system in the basement, water that funnels into the basin, or even because of rain and natural ground water in case the basement is situated below the water table level. Thus, it’s easy to understand the importance of the sump pump as it prevents a disastrous flood from occurring.

Seeing just how important this product is, it was inevitable for variations to appear. This is where battery back up sump pumps come in, these more effective models being the preferred choice of modern people as they actually offer a continuous operation, unlike sump pumps that solely rely on receiving power to operate, pumps that will inevitably fail you in the case of a power outage. On the market for sump pumps that feature battery backup, there are two main types of models that you will encounter, more precisely DC and AC/DC sump pumps.

When the AC power is out, the battery backup system is going to switch to DC battery power, thus ensuring that the possibility of a flood won’t occur. While the power is on, the sump pump will automatically use the AC wall current to not deplete the battery uselessly. When making this purchase, another aspect that you must consider is the type of battery that the sump system is compatible with. Most commonly, deep cycle batteries and lead acid batteries are used in these systems, but this is something that you can easily check by looking at the spec sheet of the product.

What you need to keep in mind is the fact that this is an investment that you must make if you want to spare yourself of the hassle involved with a potential flood, the backup sump pump system guaranteeing that the basement and all the belongings that you place in it won’t ever fall victim to this dreaded occurrence.

What Advantages Do Sump Pumps with Battery Back Up Offer?

A sump pump is a necessity in most homes, but is a battery backup system worth the investment? Find out the answer to this question and convince yourself about the importance of buying a battery back up sump pump by reading about the advantages that such a system offers to homeowners.

  • They Work Regardless of the Water Supply

  • There is another type of sump pump that some people use, more precisely the water-powered type. Unlike water-powered sump pumps, battery backup systems don’t rely on the water supply to work, which is a good thing considering the fact that if they were to rely on it, their operation would be drastically limited. Thus, this type of system has the major advantage that it’s not reliant on any exterior factor as it works through AC or DC current.

  • Easy to Install

  • Another major strong point of battery backup systems is the fact that they are easy to install, a professional installation not being necessary with them. All that you have to do is to connect the sump pump to an existing discharge pipe or to a separate pipe, and you’re done with this procedure, being able to enjoy the new addition that you have made. A lot of money is saved due to this simple installation as calling in a professional can cost a few hundreds of dollars.

  • A Power Outage Doesn’t Affect Their Operation

  • In the case of a power outage, the main advantage of the system shines as the sump pump continues to operate by relying on the power provided by the battery. Therefore, the possibility of a flood occurring is basically impossible. Of course, this operation isn’t unlimited as the battery will be able to provide power for a limited period of time. But if the model that you invest in is capable of running for up to 26 hours when the battery is used, like the Wayne WSM3300 is capable to do, for example, there probably won’t exist the situation in which the power won’t come back until the battery is completely depleted of power.

  • Excellent Pumping Power

  • If you make sure to invest in a high-quality sump pump like the ones featured in our top, you will get to enjoy an excellent pumping power as well. Quality products of this kind shown deliver a flow rate of up to 3000 gallons per hour or more at 10 feet of head, thus ensuring that the pump is perfectly able to handle the incoming flow of water without a problem.

  • Versatility in Use

  • Another main advantage of making this investment is the fact that it’s basically a necessity for most home, probably even yours. After all, you don’t want to face the costs of draining the water out of the basement or to be forced to replace certain valuables that you keep in this area of the house because they have been destroyed by water. Thus, the installation of a backup system is not optional for most as it is rather mandatory.

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