Free Shipping On Sump Pumps (Lower 48) Tax-Free Except Illinois Orders
Welcome | Sign In or Contact Us
Your Cart @ Sump Pumps Direct Cart:
Quick Search
Sump Pump Models

Wayne WSB1275 - Maintenance Free AGM Backup Sump Pump Battery (75 Amps)

Wayne Sump Pumps and Accessories
Model: WSB1275
(Based on expert analysis, manufacturer ratings and customer reviews)
4.3 out of 54.3 out of 54.3 out of 54.3 out of 54.3 out of 5
7 Reviews
Share This Product
Plus 1 This Product
Tweet This Product
Pin It!
In-Stock In-Stock
Ships Wednesday, Dec 13th

Estimate Arrival

No Sales Tax*
(Except IL)
No Sales Tax*
(Except IL)
Visit Site
(as of 06:07 CST - Details)
Sales Tax Extra
Visit Site
Sales Tax Extra
Visit Site
Sales Tax Extra
Visit Site
  • Features
  • Specs
  • 5
  • 7
  • Articles
  • Shipping
  • Accessories
Maintenance-Free Sump Pump Battery
Battery Group Size 27F
Sealed lead acid deep-cycle battery
No filling required

Run Time
8 hours of continuous operation with the ESP25

Designed for Wayne ESP15 and ESP25 models
Not recommended for Basement Watchdog models

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

1 Year Warranty

Made in USA
60 Pounds
Product Length
10.2 Inches
Product Width
6.66 Inches
Product Height
8.15 Inches
Download Documents
No documents available at this time
Need Help? Ask Our Experts.
Subject: Store ID: Product ID: Data Category: Brand Category:

*Ask Jim about the Wayne WSB1275. Sorry, no repair questions:




 Receive Weekly How-To Tips & Specials 

*Required Field Submit
  5 Questions
Q: Jim, I have the Wayne esp25 back up pump but have no idea as to which battery is the best fit for it. Should I get the AGM or this Wayne wsb1275 acid filled battery?? Your thoughts please.
by Ken R from Wisconsin on April 27, 2016

A: Thank you for your interest in Sump Pumps Direct. That Wayne WSB1275 - Maintenance Free AGM Backup Sump Pump Battery (75 Amps), is the recommended battery for the ESP25, however any 12V, deep cycle AGM battery rated at 75 amps or more, will do the trick.
If you have any other questions, please let me know.
by Jim, Product Expert
Q: It is not clear from the picture what type of connection is accommodated from the backup pump. My 3 year old Wayne ESP 25 backup sump pump control box unit has ring terminals for the two battery connection leads. Will my ring terminals connect directly to this WSB1275 battery, or do I need some type of adapter?
by Steve N from Wisconsin on December 30, 2015

A: This battery is designed to be connected with your ring terminals and does also include the bolts.
by Jim, Product Expert
Q: Can anyone, without knowledge of electric connections, or plumbing, install the battery to an existing sump pump?
by Claudia from New Jersey on August 26, 2011

A: Batteries such as these are designed to operate BATTERY BACKUP SYSTEMS. THese systems are installed as a secondary pumping system to your current primary pump. If your're interested in something to power your existing pump, you can check out the SUMPRO Fully-Automatic 1800W Auxiliary Power Source w/ 2 Batteries or our current offerings of GENERATORS as another possible solution.
by Jim, Product Expert
Q: Can you plug a sump pump into this? The picture does not indicate as such
by Jay from Kansas on August 24, 2011

A: The Wayne model WSB1275 is designed to power the Wayne model ESP 15 & ESP25 battery backup sump pump system as well as other backup systems that require a maintenence free, minimum 75 amp battery.
by Jim, Product Expert
Q: What are the dimensions of this battery?
by Greg Bramham from Virginia on June 16, 2011

A: Height 6.183 inches width 6.570 inches and length 13.625
by Jim, Product Expert
Wayne WSB1275 Reviews & Ratings
7 Reviews  Sort by 
Ypsilanti, MI
Purchased from Sump Pumps Direct
Purchased 1/26/09
Total Helpful Votes
32 Helpful Votes
2 out of 52 out of 52 out of 52 out of 52 out of 5
Failed After Three Year
Just tested this battery after three and one half years connected to back up sump pump. Never had power outage where we needed it to work, so it's just been sitting there on it's trickle charger waiting for an emergency. Tested it and it did not run the pump. Red light came on. Took it to OReilly Auto to be tested and it came up as bad. 200 CCA.

This battery is supposed to last 10 years. Did not make it.
Was this review helpful?
Mankato, MN
5 out of 55 out of 55 out of 55 out of 55 out of 5
Great Solution
We had a 23 hour power failure and water got into our lower level because without power there was no pumping of the sump. I ordered the Wayne WSS30 and the Wayne 75 amp battery. Installation was simple and the unit drains the sump in a few seconds using either the regular pump or the back-up unit. FYI, I have an eleven foot rise. The only mistake on my part was not installing the system before the disaster. Worth every penny!
Was this review helpful?
Total Reviews
2 Reviews
Total Helpful Votes
15 Helpful Votes
5 out of 55 out of 55 out of 55 out of 55 out of 5
Work Perfectly
I chose Wayne because of their Maintenance Free Battery. Both pumps work perfectly from the day I installed them.

The only thing I would suggest is to simplify the instructions. After sorting thru a pile about a thick covering all types of pumps, except the ones I bought, the instructions that pertained to my pumps would have fit on one side of a postcard, a diagram with key, period.

Except for the instruction fiasco, an excellent product!!
Was this review helpful?
Camby, IN
5 out of 55 out of 55 out of 55 out of 55 out of 5
Very Pleased
The unit arrived in a very timely manner. I was not aware that the PVC fittings came with the unit as well. It's just as the picture shown on the web site. So that save's a trip to the hardware store. Very easy to install, and it works like a champ.
Was this review helpful?
Purchased from Sump Pumps Direct
Purchased 7/23/12
Total Reviews
2 Reviews
Total Helpful Votes
10 Helpful Votes
5 out of 55 out of 55 out of 55 out of 55 out of 5
So Far So Good
Bought the kit and battery together. Kit got here first, battery took a couple extra days. The kit was easy to install and the pump drains my sump in no time.

The battery was a little pricey but has worked well so far. Would have probably been better off buying a battery locally...less cost and no wait.

I have had the system for for a couple of months and so far so good.
Was this review helpful?
Barbara M.
Aurora, IL
Purchased from Sump Pumps Direct
Purchased 7/3/14
3 out of 53 out of 53 out of 53 out of 53 out of 5
Don't Know.....
I am a woman in my 60's living alone. A plumber who was working on something else told me that I needed to replace the battery in my backup sump pump and that it would cost $400. So I looked on the internet for a company from whom I could purchase the battery and found this company near my home. The man on the phone was helpful and friendly. A friend was kind enough to install it for me. However, the light on the pump is still yellow ("Low battery") after more than week of... more
Barbara Does Not Recommend This Product
Jim, the Sump Pump Expert
Product Expert
It would be a rare occurrence that you would received a dead battery. The issue may be with the controller/charger on the system. If you can locate the owner's manual for the backup system, the troubleshooting section would be the best place to start.
Was this review helpful?
Thomas H.
Hanover Park, IL
Purchased from Sump Pumps Direct
Purchased 3/22/15
5 out of 55 out of 55 out of 55 out of 55 out of 5
Big Heavy Battery
Still early days but stays "green" on the charger and can relax during the storms as we are now covered if the power is out a day or two. Decent price and quick ship.
Thomas Recommends This Wayne Product
Was this review helpful?
Free Freight
  • Ships via FedEx Ground
We currently CANNOT ship this product to Canada or any destination outside of the United States

Buy This

Learn More About ESP25



Buy This

Learn More About Z24803PTZ



Buy This

Learn More About DCM0075



Buy This

Learn More About ESP15


Sign Up
Receive Weekly How-To Tips & Specials