The 9 best battery backup sump pumps favorites in 2023

SUMP PUMP: 1/3 Pro Series cast iron sump pump preassembled with 12 volts battery back up for maximum protection.

EMERGENCY BACK UP PUMP: Helps reduce the risk and costly repairs in case of power outage or primary sump pump failure.

PERFORMANCE: Sump pump moves up to 3050 gph with a maximum lift of 18 feet. The 12 volts backup operation moves up to 16 gph and can lift water up to 10 feet.

FAST AND EASY INSTALLATION: The system comes preassembled for fast and easy installation.

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 pump system (BW4000)

Up to 80-hour protection (based on a 10% duty cycle) on the Basement Watchdog Emergency (BWE) and Basement Watchdog Combination sump pump system (DFK961)

Runs various Basement Watchdog sump pump systems intermittently for days

Automatically switches over to battery power when AC power goes out. The PumpSpy 75 Ah Deep Cycle AGM Battery (not included) 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 (with a combined Amp draw not exceeding 12.5)

Can be used as a power inverter for many applications requiring backup power

ALWAYS HAVE A PLAN - This 1/2 HP WAYNE basement sump system is perfect to keep your basement dry during heavy water flow, even if you lose electricity. Whether it’s rain, snow melting, etc. WAYNE model WSS30VN can keep your basement dry.

BACK-UP READY - WSS30VN will pump up to 5,100 GPH and remove/evacuate/expel/get rid of up to 10,000 gallons on a single battery backup charge. WAYNE WSB1275 75 AH Battery is required for back-up but not included.

EFFICIENT DESIGN - Comes preassembled and ready for drop-in for easy installation in 15 minutes or less with no need to drill a weep hole. Fits in 16” diameter or larger sump basins.

ADDITIONAL FEATURES - The system has been tested to 1 million cycles for long-lasting use. Comes with 8-foot SJTW power cord.

QUALITY YOU DESERVE - Proudly assembled in the USA for quality you can trust. Warrantied for 5 years for dependable, efficient, & ultra-quiet performance.

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

Pre-assembled system allowing for easy installation with little or no plumbing knowledge necessary

1/3 HP energy efficient permanent split capacitor (PSC) primary pump can save money on your electric bills

Primary pump capacity 3,100 GPH at a 10 ft. lift and 3,720 GPH at 0 ft. lift

Backup system capacity 1,000 GPH at 10 ft. lift and 2,000 GPH at 0 ft. lift

Includes emergency battery backup sump pump system with 24 hour a day monitoring controller

Dual float switches on both the primary and backup sump pump systems provide 4x the protection

Provides days of intermittent pumping power on a single battery charge

Fluid sensor monitors fluid level of the battery

0.4 Amp charger is compatible with Basement Watchdog wet cell and maintenance-free AGM batteries

Compact design fits in pits with diameters as small as 12 in.

Pumps 2,000 GPH at 0 ft. of lift and 1,000 GPH at 10 ft. of lift

User-friendly control panel monitors pump, power and battery conditions 24 hours a day and provides visual and audible alarms to describe what to do for easy maintenance

Dual float switch provides 2 times the protection

Provides days of intermittent pumping power on a single battery charge

Fluid sensor monitors fluid level of the battery

Compatible with both wet cell and maintenance-free AGM batteries

Automatic 0.4 Amp charger

Compact pump can be installed even in small or narrow sump pits

Detailed instructions with over 90 pictures walk you through the simple installation process

Includes control unit with a dual float switch, a battery fluid level sensor, pump with a 1-1/2 in. PVC pipe adapter, battery box and charger (battery not included - sold separately)

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

Compatible with the Basement Watchdog Emergency (BWE) battery backup sump pump system or Basement Watchdog Combination primary and battery backup sump pump system (DFK961)

Pumps intermittently for days on the Basement Watchdog Emergency (BWE) or Combination (DFK961) system

Accommodates the Basement Watchdog fluid sensor to sound an alarm when distilled water is needed

Shipped dry to remain fresh until activated

Can be easily and safely filled with a 6 qt. battery fluid pack (sold separately Model # Z-PACK)

1 year warranty