Best Battery Backup Sump Pump Reviews 2020

Power failure is a common problem when you face a flooding situation and your sump pump will, at best, be a sitting duck unable to provide any relief. A battery backup sump pump system is your only reliable solutions in such a scenario. It’s most often installed on the basement floor to drain away any water when power is unavailable, to the pump directly, from the house supply line.

When the power fails, the battery back-up sump systems are available to power the secondary pump so that water can continue to be pumped from the basement sump pit until the main power supply is restored. This emergency system lets you be relaxed in any such occurrence and yet be sure your property will be free of all flooding at the earliest.

In a Hurry!

You can go with Wayne WSS30V battery operated sump pump as it includes all the features that we are look for in best sump pump.

Wayne WSS30V

  • Drop-in ready, Wayne WSS30V keeps your basement dry without any hassle.

  • It contains the CDU800 AC motor for the primary pump & the ESP25 as the backup.

  • The entire combo comes assembled and ready for installation.

  • It feature float switches & backflow protection.

  • By combining the two units into one package, you get one of the best values available.

  • Most homeowners can have this system set up within 15 minutes.

4 Other Best Backup Sump Pumps System

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1. Wayne ESP25 Battery Backup System, Black

With the Wayne ESP25, you get a simple, yet effective, solution for adding a backup to your sump pump. The standalone unit works with almost any current pump and can pump up to 2900 gallons of water.

The ESP25 offers up to three days of backup with a fully charged 12-volt DC power source. With the sturdy polyethylene battery case, the battery you add will remain protected in this submersible backup pump.

The system kicks in when the float switch activates, allowing the backup to start working during a power outage or when the main pump cannot keep up with the growing water level. An audible alarm lets you know when it starts pumping. Overall, this is one of the most dependable and efficient battery-powered backup systems.


  • Comes with a two-year warranty.

  • Pumps up to 10,000 gallons on a single charge.

  • The corrosion-proof thermoplastic housing protects the pump, ensuring many years of use.

  • Epoxy coated steel and cast-iron construction.


  • Deep cycle battery not included, as with many battery-powered backup pumps.

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2. Zoeller 507-0005 Basement Sentry Battery Backup Pump

The battery-powered Zoeller 507-0005 Backup Pump comes equipped with a 10-amp battery recharger. Automatically recharge your battery via an AC connection, ensuring that the battery remains fully charged before a power outage. This feature makes it one of the best backup pumps for giving you greater peace of mind.

Along with reliable performance when the main pump fails, this Zoeller backup pump includes an LED indicator and audible alarms. With a quick glance at the pump, you can check the status of the backup battery or whether the main power is out.

With the compact design, this unit also fits inside the sump pit with most types of primary pumps, depending on the size of the pit.


  • Best value for the money.

  • Easy installation With the compact design.

  • Compatible with almost any brand.


  • Not very powerful, pumping up to 900 gallons per hour.
  • As with other battery-powered backup pumps, it does not come with a battery.

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3. Liberty Pumps SJ10 1-1/2-Inch Discharge SumpJet

The simple, water-powered backup pump eliminates the need for a deep-cycle battery. It connects directly to your main water line, ensuring that the Liberty Pumps SJ10 never fails to operate.

The pump comes fully assembled, with durable PVC construction and an adjustable stainless steel hose clamp for easy mounting. After installation, the pump removes two gallons of water from the sump pit for every gallon that it gets from your water line.

The pump kicks in when the float switch gets activated, providing a reliable option for backing up your main pump. Despite the water-powered design, the pump manages to get rid of up to 2000 gallons of water per hour, which is a respectable amount for a compact little backup pump.


  • Works with anywhere between 20 and 100 PSI inlet pressure water lines.

  • Includes a built-in screen to keep debris from getting into the backup pump.


  • Not as powerful compared to some of the battery-powered backup pumps, but still enough for most residential properties.
  • The water hookup makes installation a little more complicated compared to battery-powered pumps.

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4. Zoeller 508-0005 Aquanot 508 Battery Backup System

Zoeller is a trusted manufacturer and the 508-0005 is one of their more efficient backup systems. It comes equipped with a large display unit featuring an LCD display.

The screen displays the current battery voltage, the status of the pump, and other helpful information. The 508-0005 also features a built-in 10-amp battery recharger system.

The solid-state automatic controller ensures that the battery remains fully charged when not in use. It also provides additional alarms, indicators, and warning systems to keep you aware of the state of your sump pump system.


  • The efficient charger and durable battery.

  • Using a Z control device, purchased separately, you can monitor the backup pump and battery status on mobile devices and receive a text or email notification.

  • The battery charger includes burnout and overcharges protection.


  • The battery does not come with the backup pump, which is standard for backup pumps.

Who Needs A Best Sump Pump With Battery Backup?

Water infiltration through the foundation walls and footings can lead to serious structural damage. Keep your basement walls water-free using sump pump system that can help alleviate hydrostatic pressure associated with a high water table. Knowing the answer to these questions can help you to determine if your home needs a best sump pump backup system:

  • Does water collect anywhere on your basement floor or walls?
  • Do you have a sump pit that overflows, even when the pump is running?
  • Do heavy rains or snow melt because extra water to infiltrate the basement?
  • Are there building codes that require you to install a sump pump battery backup system?
  • Are powers disruptions frequent during certain times of the year due to seasonal weather conditions?

If you answered yes to any of the above questions, then you need a sump pump battery backup but if you already have a sump pump,you can consider buying battery backup for existing sump pump

sump pump battery backup installation

Importance of Best Sump Pump Battery Backup Systems

Your home is an expensive investment. That’s why preventing water damages from occurring by installing a sump pump battery backup system can save you time, money and can help to extend the lifespan of your home. Here are just a few of the many benefits that a battery backup system for your sump pump will provide you:

Battery Backup Sump Pump System

  • No moving parts to wear out
  • Highest gallon per hour pump capacity
  • Charging system allows for simultaneous charging and pump operation
  • A secondary system prevents water damages during heavy water infiltration seasons
  • Plug and play capabilities ‚Äď install it and forget it
  • Automatic sensors detect water intrusion and instantly pump away water ‚Äď even if you‚Äôre not home
  • Warning alarms alert you to when the battery needs maintenance

Battery Backup Vs. Generators

1. Generator can serve as a backup for your sump pump as well as your home. But with many sump pump systems, the generator needs to have enough wattage and amperes to provide the sump pump backup power, as it needs to maintain the sump pits water level. A battery backup sump pump will pump away water easily as it uses a secondary sump pump system that is designed for DC power to pump water from the sump pit, eliminating the need to use the primary pump right away.

2. A battery-powered secondary sump pump compared to a generator-powered backup system for your primary sump pump can pump away just as much water as the primary pump, with the exception that you can’t recharge the battery until the power is restored.

Battery Backup Vs. Generator Sump Pump

3. Typical battery for sump pumps will have a run time of around 5-8 hours, while a fuel-powered generator can be refilled as often as necessary to maintain the water level in the sump pit.

Battery Backup Vs Water-Powered Sump Pump

Battery Backup Vs. Water Powered Sump Pumps

A water powered sump pump works on water pressure from a municipal water line to create a vacuum that rotates a turbine to pump out the water from the sump pit. Water powered sump pumps can only be used when water pressure exceeds 40 psi.

If you own your own well, then a battery backup sump pump is required to maintain the sump pits water level. Water powered backup sump pump systems cannot be used in conjunction with an electrical powered primary sump pump for obvious electrical safety reasons.

How To Choose The Best Backup Pump System

We understand that not all backup pump will be correct for all scenarios, so we’ve included this buyer’s guide to help you more generally understand whether you need a new buyer or to replace an older unit.

How To Choose The Best Backup Pump System

1. Size

The important thing that you should always keep in mind while purchasing a backup sump pump is size. You should always keep a reference of the sump and pump that you own, in comparison to the new backup pump you are buying. The backup sump pump size should be measured correctly and ensured that there is enough space in the basement for installing the same. Wrong placement and installation can lead to machine failure and pump harm, which could result in basement flooding.

There are models that come with the main pump and battery-backed pump combined in the same unit. It is advisable to go with that if possible. This would not only save your space but would also be less prone to mechanical errors and accidents. They also have the added bonus of working in concert, meaning you will have to spend less time in testing and assembly.

2. Power

The backup pump runs on battery and not on normal current. This means that it would be less in power than your main pump. However, one of the main reasons for the lack of electricity is heavy rainstorms. This means that more water will enter the sump when your backup sump pump runs. Just for saving some money don’t buy some low-quality backup pump, it would not only harm your money but also can put your building and life at risk. So always choose the backup pump that has enough power. The companies list their power on the backup pump for your reference. But you must know to identify the correct power, as most of the companies just pump the carrying capacity of the pump. That is the volume of water that the backup pump can carry.

Odds are that your sump pump is in your basement, which means that it must be pushed up by several feet of water before running through the pipe through the road. If the shown scenario is acted upon then the sump pump would feel more load and that would result in less GPH than its capacity. So always be aware regarding this when making the buying decision. You should generally aim for a model that exceeds your estimated requirements by a good amount so that it can work.

3. Quality

The quality of the backup pump should be your number one priority when purchasing. When you should do regular testing and maintenance on your sump pump, it is always good when you get a model that you know will last a long time, even with some neglect. The quality in the build is always beneficial in the long run. The better the quality the better the performance and you would be a happier soul.

Battery Powered Sump Pump Hack & its Importance


How Long Does a Battery Back up Sump Pump Last?

Even the duration of battery backup depends upon the product or model you are using, however, most of them last long after getting charged. They either run on DC or AC/DC current that helps it to work for long hours.

Can I Backup Any Sump Pump With a Battery?

Yes, you can! If you don’t want your sump pump to shut down immediately, you need to back up it with a battery. Also, make sure that the battery remains charges to use it instantly when required.

How Can I Connect Two Batteries Together?

Two batteries could be connected by fixing their wires together at opposite terminals i.e. positive and negative. They could be connected in series or parallel. It is worth noting that voltage increases if batteries are connected in series and it decreases if connected parallel.

Is it required to install a battery-powered sump pump if I have a backup power source like a generator?

Generators can work as long as their power supply switch is ON whereas a backup sump pump works until is it charged. Undoubtedly, a generator provides huge power needed for a sump pump. However, a backup sump pump is still required to get energy in case of a power failure.

How long will the battery backup last when charged for a single time?

The charge of batteries depend on its size. The batteries having over 40 amp power could be used for 2-3 days used one hour per day. Whereas some batteries last for 10-12 hours based on amount of water it uses to pump.


From the above article, I hope your confusion has been cleared of why do I need a Sump Pump battery backup system. You can choose the different sump pump backup options from the above-explained options.

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