Pump Sentry Sump Pump Battery Backup | Model 822PS

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Product Overview

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  • Stands guard against power outages
  • Can handle most home sump pumps
  • Easy 10-minute DIY installation
  • 2-year manufacturer warranty
  • 10-year life expectancy
  • Made in the U.S.A.
  • Marine Battery Not Included
  • Detects power outages
  • Switches to battery during outages
  • Charges battery during normal operation
  • Very easy do-it-yourself installation
  • 1200 Watt capacity
  • Powerful enough for most home sump pumps

When mold, flood water and other undesirable forces find an opportunity to take hold, they will! That's why we recommend using a sump pump battery backup in your crawlspace so that your sump pumps never stop working, even when the power goes off!

Just like its namesake, the  'Pump Sentry'  sump pump battery backup stands guard 24 hours a day and instantly has you covered in the event of a power outage. Things go wrong more often than you might think. During a hard rain, a crawlspace can be overwhelmed by a sudden in pouring of water.  Combine that with a lightning strike in the wrong area causing a power outage and you could find yourself with a bad situation on your hands. And depending on the type and extent of damage done, the financial impact can range from the hundreds to the tens of thousands.

Buy yourself the peace of mind by equipping your crawlspace with a sump pump battery backup. The Pump Sentry 822PS will automatically detect power outages and transfer power to the backup battery, which it spends most of its time charging. Your sump pump stays on, and your crawlspace stays dry!


Input Volts: 120 VAC; 60 Hz.
Maximum Continuous Output Power: 1200 Watts
Start Up Surge Capacity (3 Seconds): 25 Amp. 
Maximum Pump Motor Rating: 1/2 Hp.


Common Questions:

Q: Is installation difficult? Installation is relatively painless and typically takes around 10 minutes. Simply mount the unit on a shelf or wall, make the connections as specified in the instruction manual, and plug it into a standard wall outlet.

Q: How long can the unit run during an outage? During an outage, the Pump Sentry 822P can ensure continuous power to your sump pump for anywhere from 5 to 70+ hours on a single battery depending upon the capacity of the battery you're using in your setup. With a multiple battery configuration you can expect the pump sentry to provide 50 to 118+ hours of operation.

Q: Is there a warranty? Yes! The manufacturer provides an unconditional warranty of up to 2 years for the Pump Sentry, although the warranty does not cover mistakes in installation that you may cause. But if you follow the easy instructions in the manual you'll be fine.

Q: How long does the unit last? The Pump Sentry is designed and manufactured to last. It's very durable and has an operating life expectancy of around 10 years.

Q: What battery should I use with the unit? We recommend using the OPTIMA BLUE D27M-800 or any similar maintenance-free marine battery.

Q: How loud is the unit? The Pump Sentry has no moving parts and produces virtually no noise during its operation.

Q: Why does the battery monitor say High Charge? The charger always starts at High Charge and then works its way down to Low, then to Fully. Every time the power goes out or the unit is disconnected, it's going to start at high charge to test the battery, no matter how charged the battery is. Depending on the size and charge of the battery, it can say High Charge for anywhere from 15-30 minutes to up to 24 hours.

Q: Do I need to install any additional sump pumps? No! The Pump Sentry works with the pump you have, ensuring that power is available to it in the event of an outage. Thus, there is no need to replace your current sump pump, or add an additional sump pump.

Q: What is the shipping cost? The shipping cost is included in the price so there are no additional charges.

More information:


Product Videos


(6 reviews) Write a Review

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  • 5
    Model 822PS

    Posted by Grant Abe on May 20th 2022

    I am impressed with the customer service, speed of delivery and the overall value of this product. It was very easy to install and was up and running in a few minutes

  • 5
    It is easy to install

    Posted by Sal on Apr 29th 2021

    This product is awesome well worth the money

  • 5
    It is great

    Posted by Mary Siegmuund on Mar 30th 2021


  • 5
    Pump Sentry

    Posted by David Lyon on Mar 15th 2021

    Although my home has not lost power and put my pump sentry to the test yet, I could not be happier with the service I received and the simplicity of setting up the unit.

  • 5
    Pump Sentry 822PS

    Posted by Jason P. on Sep 16th 2020

    This Pump Sentry 822PS backup system for my 1/3hp primary sump pump is perfect! I didn't want to solely rely on my smaller secondary sump pump battery backup system for any potential power outages during heavy thunderstorms. The smaller secondary pump doesn't pump out nearly the water volume of my primary sump pump - and with my elaborate dewatering system, I didn't want to risk overwhelming the smaller secondary pump backup system if it's not necessary. With the Pump Sentry, if I'm out of town and the power goes out in a heavy thunderstorm, this inverter will detect the outage and automatically switch to battery backup power for my primary sump pump. I paralleled two Interstate SRM-29 batteries although you can parallel up to three batteries if necessary. My setup should give me around 8hrs of battery backup run time with my Zoeller M53 drawing 9 amps and cycling on/off every 30 - 40 seconds. There are higher efficiency pumps like the Flotec Crawlspace Ninja sells that only draw 5-6 amps, which would give you significant more battery backup run time. I've realized I won't always be home to fire up my whole house generator during a rain soaked power outage. This inverter also acts as a battery tender to keep my two batteries charged when not in use. Anyone looking for an effective primary pump backup system should definitely look into the Pump Sentry.

  • 5

    Posted by Jon Dessen on Sep 16th 2020

    You guys are amazing and so professional to work with. Thank you for your help with not only the ordering but understanding the installation of the products. Your You Tube video's were exceptional and informative. Mary Beth you were so helpful and I thank you!