Best Battery Backup Sump Pump – Top 8 of 2021

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We looked at thousands reviews, and put together a list of the top sellers. Check out the top Battery Backup Sump Pump below.


SaleNo. 1
THE BASEMENT WATCHDOG Model BWE 2,000 GPH at 0 ft. and 1,000 GPH at 10 ft. Emergency Battery Backup Sump Pump System
92 Reviews
THE BASEMENT WATCHDOG Model BWE 2,000 GPH at 0 ft. and 1,000 GPH at 10 ft. Emergency Battery Backup Sump Pump System
  • Pumps 2,000 GPH at 0 ft. lift and 1,000 GPH at 10 ft. lift
  • User-friendly controller monitors battery, pump and power conditions 24 hours a day
  • Provides days of intermittent pumping power on a single battery charge
  • Compatible with both wet cell and maintenance-free AGM batteries
No. 2
Wayne ESP25 Upgraded 12-Volt Battery Backup System, Black
581 Reviews
Wayne ESP25 Upgraded 12-Volt Battery Backup System, Black
  • Upgraded ESP25 with epoxy steel body and cast-iron base. No more plastic
  • 2700 GPH at 0' provides additional protection to your primary Wayne sump pump
  • Assembled in USA, performance that lasts for years
  • Audible alarm sounds, notifying you when the back up system is active
  • Easy to read LED display shows back up system readiness
No. 3
THE BASEMENT WATCHDOG Big Combo CONNECT Model CITS-50 1/2 HP Primary and Battery Backup Sump Pump System with Smart WiFi...
  • 1/2 HP energy efficient permanent split capacitor (PSC) primary pump can save money on your electric bills
  • Primary pump capacity 3,540 GPH at a 10 Ft. lift and 4,400 GPH at 0 Ft. lift. Backup system capacity 1,850 GPH at 10 Ft. lift and 2,600 GPH...
  • Includes a WiFi capable battery backup system that provides 24 hours a day monitoring of pump, power and battery conditions, backup...
  • Allows for connection to a Basement Watchdog CONNECT Module (BW-WiFi or BW-HZM), giving you real time alerts via text, email, or through the...
  • Provides days of intermittent pumping power on a single battery charge and is compatible with both wet cell and maintenance-free AGM...
SaleNo. 4
THE BASEMENT WATCHDOG Model BWSP 2,600 GPH at 0 ft. and 1,850 GPH at 10 ft. Special CONNECT Battery Backup Sump Pump...
41 Reviews
THE BASEMENT WATCHDOG Model BWSP 2,600 GPH at 0 ft. and 1,850 GPH at 10 ft. Special CONNECT Battery Backup Sump Pump...
  • Pumps 2,500 GPH at 0 ft. of lift and 1,730 GPH at 10 ft. of lift
  • User-friendly control panel lights up with a warning and describes what to do for easy maintenance
  • A sensor monitors battery fluid levels for increased piece of mind
  • Includes controller, charger, dual float switch, pump and battery box (battery sold separately)
  • Compact pump can be installed even in small or narrow sump pits
SaleNo. 5
THE BASEMENT WATCHDOG Model BW-27AGM Maintenance Free (AGM) Sump Pump Battery
5 Reviews
THE BASEMENT WATCHDOG Model BW-27AGM Maintenance Free (AGM) Sump Pump Battery
  • Maintenance free - no need to add battery fluid or distilled water
  • Up to 40-hour protection (based on a 10% duty cycle) on the Basement Watchdog Big Dog (BWD12-120C+)
  • Up to 48-hour protection (based on a 10% duty cycle) on the Basement Watchdog Special + (BWSP+) and Basement Watchdog Big Combination sump...
  • Up to 80-hour protection (based on a 10% duty cycle) on the Basement Watchdog Emergency (BWE) and Basement Watchdog Combination sump pump...
  • Runs various Basement Watchdog sump pump systems intermittently for days
SaleNo. 6
Raybend Primary Sump Pump Backup Power System
  • Automatically switches over to Battery Power when AC power goes out. (Battery Not Included. A Deep Cycle AGM Battery is Recommended)
  • Generates a Pure Sine Wave 120 VAC voltage to reliably power your primary sump pump
  • Automatically recharges a Battery When AC Power is restored with a powerful 10 Amp Built-in charger
  • 1500 Watt Output is enough to power two Primary Sump Pumps simultaneously (6.25 Amps Max each)
  • Can be used as a power inverter for many applications requiring backup power
No. 7
Superior Pump 92900 12V Battery Back Up Submersible Sump Pump with Tethered Switch
18 Reviews
Superior Pump 92900 12V Battery Back Up Submersible Sump Pump with Tethered Switch
  • 12 Volt Sump pump moves up to 1,380 gallons per hour, pump will lift water up to 25' of vertical height
  • Tough thermoplastic construction; 10-foot cord length
  • Tethered float switch to automatically turn the pump on/off
  • 1-1/4 inch or 1-1/2 inch NPT discharge for high capacity pumping
  • Superior Pumps are Built to Last, engineered with quality components and are 100% factory tested
No. 8
WAYNE ESP15 Battery Back-Up 12 Volt Sump Pump System
  • 720-Gallons per hour at 10-feet of lift and maximum flow is 1750 gallons per hour
  • Corrosion resistant thermoplastic construction
  • Alarm sounds to notify you when the backup system is active
  • Requires one 40-ampere hour or one 75-ampere hour battery
  • 1-Year limited warranty