Sewer & Drain · Nashville, TN
Battery Backup Sump Pump in Nashville
A second pump on its own battery that takes over when the power goes out in the same storm that fills the pit.
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Battery Backup Sump Pump in Nashville, Tennessee
A second pump on its own battery that takes over when the power goes out in the same storm that fills the pit.
For battery backup sump pump, Nashville's Sewer and Drain works across Middle Tennessee — licensed, insured, with the price in writing before the work starts. Drain and sewer crews who clear the stoppage first, then put a camera down the line and show you what caused it.
Why homeowners call
Signs that bring people to us for this
- Sewage coming up a floor drain
- Every drain in the house slow at once
- Gurgling toilet when the washer drains
- Sewer smell in the yard or basement
- A soggy, sunken strip over the sewer line
- Roots back in the line every year
- Sump pump running and running
What is included
What our battery backup sump pump work includes
- Second pump set in the same pit
- Its own check valve tied into the discharge
- Backup float set above the primary’s on point
- Deep-cycle or AGM battery in a covered case
- Charger and controller mounted above flood level
- Audible alarm for power loss and backup running
- Run time estimated from battery size and inflow
- Battery install date written on the case
How Battery Backup Sump Pump goes, from cleanout to final pass
A battery backup is a second, independent pump. It sits in the same pit with its float set higher than the main pump’s, so it only starts when the water rises past the point where the primary should have taken over. That covers a power outage, a tripped breaker, a stuck float and a burned-out motor alike.
How long it runs depends on the battery and the inflow. A large deep-cycle battery can keep a slow pit dry for a day or more, but a pit that fills every minute in a downpour drains the same battery in hours. We time your pit before recommending a battery size, and a second battery can be added for a busy one.
Batteries age even when they are never called on. A sealed AGM battery usually lasts a few years, and a flooded battery lasts about as long if its water is topped up. A few times a year, test the system by unplugging the main pump with water in the pit and watching the backup take over.
Water-powered backups are an option on city water. They use municipal pressure to pull water out of the pit, need no battery and require a backflow preventer on the supply. They don’t work on well water, because the well pump stops along with the power, and they use a good amount of city water while running.
Also available
Other sewer, drain and septic work
Sump Pump Services
Sump pits, pumps, check valves and discharge lines for basements and crawl spaces that take water in a hard rain.
Learn moreSump Pump Repair
A pump that hums but will not empty the pit, cycles every few minutes or runs nonstop, put right or honestly condemned.
Learn moreSump Pump Installation
A new pit, pump, check valve and discharge line carried well clear of the foundation, where none was before.
Learn moreSump Pump Replacement
A worn-out pump swapped for one sized to how fast the pit fills, with the check valve replaced at the same time.
Learn moreService area
Sewer and drain calls we take across Middle Tennessee
Our trucks reach Nashville and 100 more towns in 12 counties, and we take sewer and septic calls anywhere within about an hour of the city.
FAQ
Battery Backup Sump Pump: what people ask first
How long will a battery backup sump pump run?
Anywhere from several hours to a couple of days, depending on the battery and how often the pit fills. A large deep-cycle battery behind a slow-filling pit lasts a long time, while the same battery against a pit that fills every minute in a downpour may last only an evening. A larger battery or a second one extends it.
Is a water-powered backup sump pump better than a battery one?
It can be, on city water. A water-powered pump runs on municipal pressure for as long as the water is on, with no battery to wear out, though it uses a lot of city water while running and needs a backflow preventer on the supply. On a well it won’t work, since the well pump stops when the power does.
How often should a sump pump backup battery be replaced?
Every three to five years for most sealed batteries, sooner if the controller reports a weak charge or the battery has carried the pump through long outages. Write the installation date on the case. A battery that tests weak in the fall should be replaced before the winter and spring storms arrive.
Do I need a battery backup sump pump if I have a generator?
It still helps. A generator covers a power outage only if someone is home to start it, or if it is a standby unit that starts on its own. A battery backup also takes over when the main pump itself fails, the float sticks or the breaker trips, none of which a generator can fix.
Free estimate
Book battery backup sump pump with our crew
Call or write to Nashville's Sewer and Drain with what the drains are doing; we clear the line first and price any repair from the camera footage.