Battery backup for a sump pump

Battery Backup Sump Pump System in Milwaukee, WI

When the power goes out, your basement or crawl space shouldn’t flood.

Most sump pumps rely on electricity to operate. During major storms, the moment you need them most, they might fail. That’s why Accurate Basement Repair installs battery-powered backup sump pump systems that keep protecting your home, even when the lights go out.

Our StormCore Elite™ Fully Redundant Pumping Systems with Battery Backup gives your home a second line of defense, protecting your belongings, your structure, and your peace of mind.

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Consider a Backup Sump Pump

When a Backup Sump Pump Makes the Most Sense

Not every home needs a backup system, but when the conditions are right, it can be the difference between peace of mind and disaster. Here are the most common situations where a backup sump pump is a smart addition:

Power Outages During Storms

If your home has lost power during a thunderstorm or hurricane season, your sump pump was offline when you needed it most. Backup systems keep working even when the lights go out.

Older or Overworked Sump Pumps

All pumps wear out eventually. If your primary sump pump has been running hard for years or cycling constantly during storms, a backup can be your safety net.

Flood History or High Water Table

If your home has experienced water intrusion in the past, or if you’re in a low-lying area prone to flooding, a backup pump adds another layer of security against future events.

Short Circuits or Mechanical Failures

Even a tripped breaker or faulty float switch can knock your sump pump offline. A battery backup doesn’t rely on the same electrical or mechanical systems and kicks in automatically.

Going on Vacation or Leaving for Extended Trips

When no one’s home to check on things, you want to know your basement or crawl space is protected. Backup pumps give you that assurance, even if the unexpected happens.

Finished Basements or Stored Valuables

If your basement has carpet, drywall, electronics, furniture, or anything valuable, flood prevention becomes non-negotiable. A backup system protects your investment.

Crawl Spaces with HVAC or Mechanical Equipment

In homes where HVAC systems, furnaces, or water heaters are located in the crawl space, keeping that space dry is critical. A backup pump helps avoid costly damage and dangerous conditions.

A fully finished basement bedroom with an egress window
In a finished basement, flood prevention becomes non-negotiable. A backup system protects your investment.
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  • Lifetime Warranty

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  • Product Replacement for Life

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  • 100% Financing available

  • Licensed, bonded, and insured

  • No Sales Games

  • Industry-leading warranties and guarantees

  • Recommended by Your Neighbors

  • A+ BBB Rating

How It Works

How Our StormCore Elite™ Fully Redundant Pumping Systems with Battery Backup Work

Accurate Basement Repair installs powerful, fully integrated battery backup systems that activate automatically if your main sump pump loses power or fails.

Here’s what you can expect:

  1. Secondary pump unit: Installed alongside your primary sump pump, ready to activate when needed.
  2. Deep-cycle marine battery: Designed for long standby periods and immediate high-power performance during outages.
  3. Automatic switching: If the primary pump fails or the power goes out, the battery backup takes over instantly.
  4. Performance monitoring: Many systems include an easy-to-read screen or alert system to monitor battery charge, pump performance, and runtime status.
  5. High water handling capacity: Capable of pumping thousands of gallons per hour, enough to manage even major downpours.
Why Trust Accurate Basement Repair
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Why Homeowners Trust Accurate Basement Repair for Backup Sump Pump Systems

When it comes to protecting your home from water damage, the right sump pump system is only part of the equation. Just as important is the company you choose to install it.

Accurate Basement Repair is a trusted waterproofing contractor with deep experience in Milwaukee, WI’s unique soil, storm patterns, and foundation challenges. We don’t push products, we install smart systems designed for long-term protection. That includes powerful battery backup sump pumps that work when your primary system can’t.

Whether you’re looking to upgrade your current sump pump, prepare for hurricane season, or protect a finished basement, our team will walk you through every option. We provide clear recommendations, honest cost breakdowns, and dependable service from the first inspection to the final install.

If you’re searching for a sump pump company near you that understands the value of real flood protection, not just a sales pitch, Accurate Basement Repairis here to help.

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Our Exclusive Guaranteed Solutions for Life™

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    WORRY FREE

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    A water-tight warranty that ensures the problem won’t come back. Warranty transfers to the new owners if you sell. That adds real value to your home.

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    Unlike with other come-and-go contractors, with Accurate Basement Repair your money is never at risk.

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    Sump pumps, dehumidifiers, fans, valves, stabilizers… all the moving parts replaced for free with no questions asked.

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    LIFETIME PROTECTION

    Lifetime TotalCare™ Maintenance

    Failures occur when systems are not maintained, or pumps go unmonitored. Our Lifetime TotalCare™ Maintenance program ensures your system keeps working like new.

Stay Protected, Even When the Power Goes Out

Flooding doesn’t wait for the perfect moment, and your protection shouldn’t rely on a single pump. With a backup sump pump system from Accurate Basement Repair, your home stays guarded against water damage, even during a power outage or heavy rain.

Schedule a free inspection today to learn more about backup sump pump system cost, installation, and the best waterproofing options for your home.

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Phenomenal job

Phenomenal job. This type of work is not easy, but Chris and his crew did a great job diagnosing our situation and offered a permanent solution. Problems were addressed in a professional way – Chris really stepped up. Would highly recommend. It has now been 6 years since the work was done and we’ve had…

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Accurate Basement is the best!!!

Thank you for the expertise and speed of Paul Vaccaro and Tony Burgarino at finding the source and connecting us to the appropriate contractors to solve the complex water basement issue. Especially thank you Tony for calling 2 weeks later to check that everything was corrected! Accurate Basement is the best!!!

View Review

This was the 2nd time that Accurate did work for us, we are extremely happy with both repairs. 11 year ago they put in steel support beams for 2 wall that were bowing and replaced drain tiles in the original house. The work was excellent and we’ve enjoyed a dry basement. Our home has a…

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Great experience

Very responsive. John, the gentleman that came and reviewed our situation, explained what he thought was going on and set an appt for us. The testing was done very efficiently and the clean up was perfect. Great experience.

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Courteous & professional

Paul came out and looked at some potential work for us. Words to describe the stop are prompt, courteous & professional. He did not hurry us or try to push a solution. Very much a knowledgeable advisor and consultative. In the end we all agreed that there was not any work to be done which…

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Timely and very professional

Timely and very professional and clearly explained service by Kyle. He was also very respectful and amicable

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Accurate Basement Repair Financing Solutions

Easy Financing Options for Affordable Payments

Most homeowners don’t expect to deal with water in the basement or cracks in the foundation. But when these problems show up, delaying repairs can make the damage worse—and more expensive.

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Keep your system working at maximum capacity

Stay Protected With Our
Annual Maintenance Plan

When you had your waterproofing solution installed, you made a very important decision to protect your property. Just as your automobile needs maintenance and monitoring, so does every waterproofing system.

Phenomenal job. This type of work is not easy, but Chris and his crew did a great job diagnosing our situation and offered a permanent solution. Problems were addressed in a professional way – Chris really stepped up. Would highly recommend. It has now been 6 years since the work was done and we’ve had…

View Review

Thank you for the expertise and speed of Paul Vaccaro and Tony Burgarino at finding the source and connecting us to the appropriate contractors to solve the complex water basement issue. Especially thank you Tony for calling 2 weeks later to check that everything was corrected! Accurate Basement is the best!!!

View Review

This was the 2nd time that Accurate did work for us, we are extremely happy with both repairs. 11 year ago they put in steel support beams for 2 wall that were bowing and replaced drain tiles in the original house. The work was excellent and we’ve enjoyed a dry basement. Our home has a…

View Review

Very responsive. John, the gentleman that came and reviewed our situation, explained what he thought was going on and set an appt for us. The testing was done very efficiently and the clean up was perfect. Great experience.

View Review

Paul came out and looked at some potential work for us. Words to describe the stop are prompt, courteous & professional. He did not hurry us or try to push a solution. Very much a knowledgeable advisor and consultative. In the end we all agreed that there was not any work to be done which…

View Review

Timely and very professional and clearly explained service by Kyle. He was also very respectful and amicable

View Review
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