Best Best Battery Backup Sump Pumps
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Basements are apt to flooding because they are below grade. If water comes in, there is nowhere to go. Many basements have a sump pump set up on a pit in the cellar flooring to aid in these circumstances. When water starts filling the pump basin, the pump kicks on and pumps the water from the sump pit. So long as the pump is receiving energy, it is a dependable system. Regrettably, storms that bring flash flooding and torrential rains, from time to time, bring high winds and lightning, which can down a power line or knock away a transformer, leaving your house with no electrical power for hours or days. Without the pump to eliminate water, the basement might flood.

For all those occasions when the power is out, it is advisable to use a backup for getting rid of water out of the cellar. This is where the battery backup sump pump comes in handy. When the power goes out, the device turns on and takes over, pumping out water until the electricity returns. The most effective sump pump battery backup for your house is determined by how frequently your present sump pump cycles to eliminate water and how long a power outage typically lasts in your location. The following seven sump pump battery backups are going to step up once the power goes out.

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
  • Indoor Use Only: This 1/2 HP WAYNE indoor sump system is perfect to keep your basement or indoor area dry during heavy water flow, even if you lose electricity; whether it’s rain, snow melting or more, WAYNE model WSS30VN can keep your basement dry
  • Back-Up Ready: WSS30VN will pump up to 5,100 GPH and remove/evacuate/expel/get rid of up to 10,000 gallons on a single battery backup charge; WAYNE WSB1275 75 AH Battery is required for back-up but not included
  • Efficient Design: Comes preassembled and ready for drop-in for easy installation in 15 minutes or less with no need to drill a weep hole; fits in 16” diameter or larger sump basins
  • Additional Features: The system has been tested to 1 million cycles for long-lasting use; comes with 8-foot SJTW power cord
  • Quality You Deserve: Proudly assembled in the USA for quality you can trust; warrantied for 3 years for dependable, efficient, & ultra-quiet performance
PumpSpy PS2000 WiFi Battery Backup Sump Pump System w/Internet Monitoring & Alerts, Sump Pump Battery Backup That Connects to 24/7 Remote Monitoring Service, Compatible w/PumpSpy App
  • WiFi-COMPATIBLE: PumpSpy's PS2000 Battery Backup Sump Pump System connects to a local WiFi network so that you can monitor your basement anywhere! Our proprietary app allows remote monitoring and alert services with no monthly subscriptions. The PumpSpy remote monitoring and alert services are available anywhere with an internet connection.
  • EASY TO USE: This smart battery backup sump pump works with any 120-Volt primary sump pump! Simply plug your sump pump into the 120-Volt outlet on the controller so PumpSpy can start watching your sump pump system. The backup pump can pump a maximum of 3,600 gallons of water per hour, 2,400 gallons/hour at 10 feet of lift. It sits next to the main pump and automatically activates when there is a power outage or pump issue.
  • MORE FEATURES FROM THE APP: Get instant alerts on your phone with the PumpSpy app that you can install on Apple and Android mobile devices. Receive alerts when the primary or backup sump pump malfunctions, pumps run too long, pumps draw excessive current, there is a high water level, a power outage, and a WiFi connection loss. Alerts are sent via SMS, email, or push notifications, so you can act quickly and prevent flooding problems in your home.
  • REMOTE MONITORING: Aside from the app, we also provide remote monitoring service via patented and proprietary technology. PumpSpy computers watch your primary sump pump, backup pump, and battery. System tests are performed 3X per week to ensure your primary and backup pumps are ready to protect your basement from the next storm.
  • HELPING KEEP BASEMENTS DRY: Here at PumpSpy, we design, manufacture, and distribute easy-to-install products for keeping basements flood-free. Our products, from plug-in smart outlets to combinations of primary and backup sump pumps for basement protection, are assembled in the USA using domestic and imported parts.
Wayne BGSP50 Guardian Premium Wi-Fi Connected Total Basement Protection System, Black
  • Indoor Use Only - WAYNE Basement Guardian has two fully submersible, nested, all cast-iron AC (primary) & DC (back up) sump pumps that are “drop in the pit” ready. Complete with two (2) pre-installed 1-1/2 in check valves.
  • Back-Up Ready - Basement Guardian will pump up to 5,100 GPH and remove/evacuate/expel/get rid of up to 11,000 gallons on a single battery backup charge. WAYNE WSB1275 75 AH Battery is required for back-up but not included.
  • Smart Home Ready - Compatible with Apple iOS and Android for continuous monitoring, even when the power is out. Innovative Local Link technology transmits data to the app during power outages when your WiFi router is down.
  • Additional Features - 1-1/2" discharge for easy installation and compliance with building codes. Use in 15" diameter or larger sump basins. Remote display box shows hours of pumping power, battery health & charge, and water level.
  • Quality You Deserve - Proudly assembled in the USA for quality you can trust. Warrantied for 5 years for dependable, efficient, & ultra-quiet performance.
Wayne ESP25 Upgraded 12-Volt Battery Backup System, Black
  • Indoor Use Only - This 12 Volt WAYNE basement battery backup sump pump is perfect to keep your basement dry during heavy water flow when you lose electricity. Whether it’s rain, snow melting, etc. WAYNE model ESP25n can keep your basement dry.
  • Back-Up Ready - ESP25N will pump up to 2,700 GPH and remove/evacuate/expel/get rid of up to 10,000 gallons on a single battery backup charge. WAYNE WSB1275 75 AH Battery is required for back-up but not included.
  • Efficient Design - Fits in 14” diameter or larger sump basins, with no need to drill a weep hole
  • Additional Features - Epoxy-coated steel housing with a cast-iron base. Corrosion-resistant thermoplastic impeller for maximum water flow. Protective battery case includes LED display and an audible alarm to let you know if there’s a problem.
  • Quality You Deserve - Proudly assembled in the USA for quality you can trust. Warrantied for 2 years for dependable, efficient, & ultra-quiet performance.
Zoeller 508-0006 Aquanot 508 ProPak53 Preassembled Sump Pump System with Battery Back-Up
  • Includes: Model 53 115-volt pump, Model 508 Aqua not, 115 Volt DC backup system with pump, check valve, float switch and piping
  • Plumbed in 1-1/2" Such 40 PVC pipe
  • Comes fully assembled and ready to install in your clear water sump
  • Extra protection when the primary AC pump fails due to power outages
  • Fully solid state automatic 10A charger/controller with alarm, light indicator and warning system
Zoeller 508-0005 Aquanot 508 Battery Back-Up System
  • 12 volt highly efficient noncorrosive pump construction
  • Integrated check valve
  • Quick disconnect discharge
  • Aluminum seal pocket & cooling plate
  • Hand built & 100% tested in USA
Zoeller 507-0005 Basement Sentry Battery Backup Pump
  • Provides extra protection when the primary AC pump fails due to power outages, when the primary pump fails
  • All models have battery burn out and overcharge. Control device -Reliable low voltage float switch
  • Model 507 has a self contained 10 amp battery recharger. Battery case made from noncorrosive polyethylene. Contains lock strap
  • All systems are fully solid state automatic controllers with alarms, light indicators and have warning systems
  • NOTE: Sump Pump and Battery are not included, as they must be purchased separately. Alarm Off - yellow light indicates the buzzer is currently silenced

What To Consider When Selecting The Best Sump Pump Battery Backup

Dependability and longevity are among the best considerations when selecting a sump pump battery backup. When searching for a backup sump pump, how rapidly it can eliminate water and the length of time it can operate before the electric battery runs down are essential features.

Material Of The Sump Pump Battery Backup

Battery backup sump pumps often feature housings made from industrial thermoplastic, stainless steel, or some other waterproof materials made to withstand corrosion. The housing must be sealed to avoid water from getting inside the pump’s parts.

Pedestal Vs. Submersible

Like primary sump most pumps, an electric battery backup sump pump could be one of two types:

Submersible: A submersible unit rests within the sump pit, that is, in the basement floor. When water goes into the pit, the warm level starts to increase, and once the water reaches a certain level, the pump kicks onto pump water on the surface.

Pedestal: The pumping engine of any pedestal sump pump rests atop a column, and the base of the column sits within the sump pit. The column is around two to three feet high, so the pump motor rests above the floor. Since the pump rests above the water, it should be moisture resistant, although not completely waterproof like a submersible pump.

Battery & Runtime Of Sump Pump Battery Backup

Battery backup sump pumps operate on 12-volt, acid-free batteries. Some manufacturers advise a battery that is marine rated, which could mean it will withstand moisture better than a regular 12-volt battery power. A 12-volt battery’s power can vary from 40-amp hours to 80-amp hours or more, with 75 amp hours the most common. The bigger the amp-hours, the better the battery power and the longer the backup pump will go. How rapidly a battery runs down is determined by how much water enters the sump pit and how frequently the pump should cycle to pour it out.

For instance, if a backup sump pump cycles after every four minutes & most pumps out 1.5 gallons with every cycle, a 40-amp-hour electric battery could last 32 hours, while a 120-amp-hour battery may last better than 96 hours. Nevertheless, in case the pump cycles each second, the 40-amp-hour battery’s runtime will drop to around eight hours, and also, the 120-amp-hour battery will last better than 24 hours.

Yet another aspect enters the scene: After four or maybe five years, a 12-volt battery will begin to shed several of its power to support a charge. What this means is that an old battery is going to have much less runtime. Deciding on a strong battery—and changing that battery every four or five years—will be the better option for maintaining the basement free from unnecessary water.

Gallons Per Minute 

Also referred to as its capacity, a backup sump pump’s gallon-per-hour (GPH) rate estimates the optimum amount of gallons it can pour out within one hour when the power supply is fully charged. This quantity generally appears on the pump’s label or in its product description, and it is directly associated with the power (measured in horsepower) of all of the pumps. Most backup sump pumps are going to remove a typical of 1,800 to 2,000 GPH with a 10-foot lift, which suggests they’re able to pour much water to a height of ten feet, and that is the standard level needed to eliminate water from below a cellar to the ground level.

Easy Installation Of The Sump Pump Battery Backup

Installing a battery backup sump pump is not a tough task. It takes simple plumbing methods; most communities need a licensed plumber to finish the setup. Consult your local building authority for the regulations in your area. 

The simplest type of backup pump to put in is a combination unit, consisting of both the main pump and a backup pump nested together. Because the two pumps come attached, there is simply no requirement to splice the drainpipe to put in the second pump.


A battery backup sump pump must be powerful and durable enough to safeguard the basement from flooding when the power goes out. Our winner is perfect for keeping your basement dry in any weather type.

The Wayne WSS30VN Sump Pump structure features a high-quality suction mechanism to reduce debris and limit clogging. There’s also a brightly lit LED alarm system signal that allows homeowners to remain abreast about status updates.

Even if the pump moves away, the engine will keep running. This pump is Ultra Quiet and doesn’t create an annoying noise. Developed by an industry leader with more than 80 years of experience, Wayne understands basement sewage management better compared to anybody else in the industry.

Consequently, you can stay away from producing a vent or weep hole because this pump does everything for you personally. The product is around 24 lbs. Therefore, it doesn’t need strain to carry.

Furthermore, it comes already pre-assembled to drop directly into the sump basin. The outside has a rugged cast metal, epoxy coated construction for rough handling and tough applications.

Lastly, there’s a smart charging technology that restricts the total amount of energy utilized by the DC current.

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