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The Wayne wsb1240 - maintenance free agm backup sump pump battery (40 amp) is available for purchase today.

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Wayne WSB1240 - Maintenance Free AGM Backup Sump Pump Battery (40 Amp)

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Maintenance-Free Sump Pump Battery
Sealed lead acid deep-cycle battery
No filling required

Run Time
4 hours of continuous operation with the ESP15 sump pump

Designed for Wayne ESP15 Backup Sump Pump
Not recommended for ESP25 or Basement Watchdog Pumps

Due to Hazmat requirements, this product ships via semi-truck

1 Year Warranty

Need Help? Call Our Sump Pump Experts.
Model Number:WSB1240
Weight:35 Lbs.
Dimensions:7.75L x 6.5W x 7.625H
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*Ask Jim about the Wayne WSB1240. Sorry, no repair questions:




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  2 Questions
Q: I have a Wayne RSP130SU sump pump. With the wet and crazy weather years we've had lately, I'm worried about the power going out and my pump quitting. If I buy a Wayne battery such as a WSB1240, can I hook it up to my pump and be confident it will keep the pump running when the power goes out?
by Seth Tupper from South Dakota on June 18, 2011

A: The RSP 130 is a 120 volt powered sump pump and can only be powered by 120 volt ac. Your only option would be to install a BATTERY BACKUP SYSTEM or purchase an AUXILIARY POWER SYSTEM.
by Jim, Product Expert
Q: When pump goes on does not run for 10 seconds like it should,Only runs for five seconds.
by Joe DeMarco from Illinois on December 31, 2010

A: For advanced troubleshooting on Wayne Sump Pump Systems, try contacting them directly at (800) 237-0987
by Jim, Product Expert
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Free Freight
  • Ships via FedEx Ground
We currently CANNOT ship this product to Canada or any destination outside of the United States

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