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Discover how much sump pump installation costs, including average prices, key cost factors, and tips to save on your basement waterproofing project.
How Much Does a Sump Pump Battery Backup Cost? [2025 Data]
Normal Range: $600 - $1,200
A sump pump battery backup costs $900 on average, but prices often range from $600 to $1,200 depending on the pump type and professional labor costs in your area.
How we get this data
Photo: Joe Hendrickson / iStock / Getty Images Plus / Getty Images
Photo: Joe Hendrickson / iStock / Getty Images Plus / Getty Images
Cost Insights
The cost to hire a pro to install a sump pump system with a battery backup averages $900, with projects ranging from $600 to $1,200.
Significant factors affecting the final cost for a sump pump backup battery include the battery design, material, and pumping capacity.
A standard design costs between $100 and $200, but a deep-cycle design costs $200 to $400.
The average cost of a sump pump backup battery comes out to $900. However, the price can range from as little as $300 to as much as $1,800, depending on the type of backup system you select. A battery backup system is highly beneficial for people with homes in areas that have frequent power outages, as it will power your sump pump, even if your electricity fails. Dive into the different types of battery systems and cost factors to back up your battery budget as well as your sump pump.
Sump Pump Battery Cost Factors
The cost of a backup battery for your sump pump may seem expensive, but you can budget for it by figuring out the type of battery, pumping capacity, package features, material type, and the labor costs needed to install it.
Type of Battery
There are a few different types of batteries to choose from when purchasing a sump pump battery backup. AGM, or absorbent glass mat, batteries come in standard or deep-cycle designs.
| Battery Type | Average Cost | Average Life Span |
|---|---|---|
| Standard design | $100–$200 | 3–5 years |
| Deep-cycle design | $200–$400 | 10+ years |
A standard lead-acid battery is often less expensive and offers a high amount of electricity. However, they don’t last as long as deep-cycle batteries. The more expensive deep-cycle or marine batteries have a longer run time which is great during long power outages. With proper maintenance, these batteries can last for 10 or more years.
Pumping Capacity
Photo: IcemanJ / iStock / Getty Images Plus / Getty Images
Depending on your home’s requirements, you’ll need to choose between a high-capacity or low-capacity backup.
| Pumping Capacity | Average Cost | Gallons Pumped per Hour |
|---|---|---|
| Low capacity | $200–$400 | 1,000 |
| High capacity | $400+ | 2,200 |
A low-capacity backup is more cost-efficient, however, it can only pump up to 1,000 gallons per hour. A high-capacity backup is more costly but offers a higher pumping capacity, which means it’s faster at removing water from the area.
Additional Parts
Depending on the sump pump backup system you buy, there may be some additional parts you’ll still need to purchase. Some systems do not include the battery, which can cost between $120 to $200 when purchased separately. The initial package doesn’t usually include a discharge pipe or a check valve either, which can cost between $10 to $40.
| System Part | Average Cost |
|---|---|
| Battery | $120–$200 |
| Discharge pipe | $10–$50 |
| Check valve | $10–$40 |
Build Materials
A battery backup for your sump pump can be made from cast iron, stainless steel, or plastic. The more durable materials often have a higher price point, but they can withstand more severe conditions and have a longer life span.
| Cast Iron | Stainless Steel | Plastic |
|---|---|---|
| $100–$2,600 | $200–$600 | $50–$500 |
| Long life span | Medium life span | Short life span |
| High durability | Medium durability | Low durability |
A cast-iron backup system is the most durable and can outlast severe weather conditions. A stainless steel system is also highly durable and corrosion-resistant. A plastic system has the lowest cost, the shortest life span, and less durability.
Labor
When hiring a local sump pump pro to install your system, expect to pay between $45 to $200 an hour. Due to the complexity of a battery backup sump pump system, it can often cost more to install than a system without a battery backup.
The total cost often ranges from $640 to $2,000, with the average coming out to $1,220.
Sump Pump Maintenance
Photo: Alex Potemkin / E+ / Getty Images
It’s important to keep up with annual maintenance for your sump pump to ensure everything is working correctly. Technicians will inspect the parts to make sure they’re working, unplug and clean the unit, and test the unit as a whole.
If they find any issues with your sump pump, you can expect to pay:
$250 for the maintenance checkup
$500 on average for repairs
Between $310 to $750 to replace a sump pump if it needs major repairs
Why You Should Hire a Sump Pump Installation Pro
Installing a sump pump with a backup battery is complicated and, for most homeowners, is a task best left to a local sump pump installation pro.
Here’s why it’s ideal to hire a sump pump installation pro
For most homeowners, a sump pump installation is too complex. Systems with backup batteries are even more complicated to install. Despite the hourly rate of a sump pump installer (between $45 and $200 an hour), it makes sense for most homeowners to call in a pro. Here’s why:
Sump pump installation involves both plumbing and electrical work, which are specialized skills.
Working with electrical systems can be dangerous if you don’t know what you’re doing.
Incorrect installation can lead to basement flooding, water damage, and mold growth.
If the sump pump with backup battery comes with a warranty, it may require professional installation.
Professionals carry liability insurance: If they make a costly mistake, you’re covered, but if you make a costly mistake, that’s on you.
Sump pumps are often subject to building codes; a sump pump pro knows these codes like the back of their hand and can ensure compliance.
If you want to DIY a sump pump backup battery system installation
If you’re handy around the house and have prior experience working with sump pumps, you may be able to install the system yourself. Just make sure you:
Verify that a DIY install won’t void the warranty.
Have all the correct tools to handle the install yourself.
Set aside at least a day for the install.
Next Steps: Finalize Your Project With a Pro
Ask your contractor if your city requires a permit for sump pump installation, and make sure they’ll obtain it for you (and that the cost is already reflected in your quote).
Talk to your contractor about your budget so they can recommend the right brand, type of battery, and pumping capacity that you can afford, but also works for your home.
Have the contractor walk you through routine maintenance tasks for your sump pump so you can keep it in proper working order.
How Angi Gets Its Cost Data
Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We extensively research project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We rely on reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.
Want to help us improve our cost data? Send us a recent project quote to [email protected]. Quotes and personal information will not be shared publicly.
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