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Internet # 100661339

Model # WSB1275

75 Amp Hour Maintenance-Free Battery

$276.57
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  • Holds charge while sitting idle and easy to ship or transport
  • Long-life, sealed lead acid battery is maintenance-free
  • Suggested for use with Wayne back-up systems
  • View More Details

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Product Details

About This Product

The Wayne 75 Amp Battery is recommended for use with Wayne back-up systems. This long-life, sealed lead acid battery needs no filling or maintenance. It holds its charge while sitting idle and is easy to ship or transport.

Highlights

Product Information

Internet # 100661339

Model # WSB1275

Additional Resources

Shop All Wayne

Specifications

Dimensions: H 8.10 in, W 7.50 in, D 14.70 in

Dimensions

Product Depth (in.)

14.70 in

Product Height (in.)

8.10 in

Product Width (in.)

7.50 in

Details

Amperage (A)

75 A

Battery Life (hours)

32 hr

Battery Type Required

12-volt

Discharge Flow @ 0 ft. (gallons/hour)

0

Discharge Flow @ 0 ft. (gallons/min)

0

Discharge Flow @ 10 ft. (gallons/hour)

0

Discharge Flow @ 10 ft. (gallons/min)

0

Housing Material

Thermoplastic

Impeller Material

Thermoplastic

Included

Battery(s)

Product Weight (lb.)

55 lb

Returnable

7-Day

Voltage

12v

Warranty / Certifications

Certifications and Listings

No Certifications or Listings

Manufacturer Warranty

1 Year Limited

Questions & Answers

Wayne battery back up do you need an AC/DC inverter?
ByApr 7, 2026
1 Answer | 
Answer This Question

Hello, we do not recommend using Generators or inverters on our units.

By|Apr 8, 2026


    Can this battery be plugged into my CDU800SS sump pump 24/7/365 and only turn on when my house power goes out?
    ByNov 17, 2025
    1 Answer | 
    Answer This Question

    The CDU pumps are manufactured to work on AC power only. We do have a stand alone pump that run on DC power as well as two pump combo unit with a CDU800 and the ESP25n DC pump. https://www.homedepot.com/s/wayne%20water%20ESP25N%20sump%20pumps?NCNI-5 https://www.homedepot.com/p/Wayne-Upgraded-1-2-HP-Combination-Battery-Backup-System-WSS30VN/307352334

    By|Nov 17, 2025


      Would a LifePo4 battery be better than a sealed acid battery for this application?
      ByAug 10, 2025
      1 Answer | 
      Answer This Question

      Our capacitors are not designed to use a LifePo or Lithium battery.

      By|Sep 12, 2025


        do you mean a 75Ah battery for sump pump backup
        ByMay 22, 2025
        1 Answer | 
        Answer This Question

        Hello, thank you for your inquiry. Yes the 75 Ah battery or more is what is used for our units.

        By|Nov 15, 2025

          (2)

          what is the cycle life of this battery?
          ByJan 7, 2025
          1 Answer | 
          Answer This Question

          Hello the life span is 3-5 years just like a normal car battery.

          By|Apr 28, 2026

            (3)

            what is the certification for this battery
            ByJan 7, 2025
            1 Answer | 
            Answer This Question

            Hello, What type of certification are you looking for if you would like to discuss it you can call us at 800.237.0987 or email us at CS@wanynewater.com.

            By|Jan 8, 2025


              I have a plug in sump pump. Can I plug my (only) pump into this, and plug the battery into the wall? I only want it to kick on if power is lost.
              ByNov 19, 2024
              1 Answer | 
              Answer This Question

              Please contact Customer Service so we can better help you with your install. 800.237.0987

              By|Nov 19, 2024


                I want to use an Optima DH7 battery which has 3 yr. full replacement warranty. Will this battery fit the box and is the Wayne charger compatible? Battery is AGM 80 Ah Deep Cycle Size is L 12.5"x W 6.9" x H 7.5" Optima is known for very long lasting ba
                ByFeb 14, 2024
                1 Answer | 
                Answer This Question

                For optimum efficiency, it is best to use the Wayne battery WSB1275. If the Wayne battery is not available, you can use a 12 volt, AGM, sealed lead acid battery, with 100 maximum amp hour. The battery class or group size 27.

                By|Apr 5, 2025


                  Viewing 1-8 of 37

                  Customer Reviews

                  4.4 out of 5

                  • 4.4 out of 203 reviews
                  • 84% recommend this product
                  Filter by:
                  Showing 1-10 of 203 reviews
                  Old battery
                  In the installation manual, it states: “use the battery as soon as possible. The battery gradually deteriorates during storage and thus its decreased capacity may be irreversible.” It is October 2022. The battery that was mailed to me was produced in 2019. This would be ok if the battery had a 5 year warranty, but not with a 1 year limited warranty. Returning.
                  by
                    3 found this review helpful
                    I got this because it perfectly fits the Wayne ESP25 box ... but it is expensive. The backup syst...
                    I got this because it perfectly fits the Wayne ESP25 box ... but it is expensive. The backup system and this add to over $500, and with the other things needed, it gets well over $600 (not including install). If it had a 5YR Warranty, it would be 5 Star, but only 1YR Warranty?!?! Honestly wonder if it would have been better to use this money for a possible insurance deductible? The window of benefit for me is small. In one year, I have to have flooding, and the power go out, but not go out longer than the battery lasts. If you live where you can not get flood insurance, and National Disasters are unlikely to get declared, so FEMA covers you ... then this might be worth it, but if that is the case, you might be better off not storing things in your basement?
                    by
                    • Verified Purchase
                    1 found this review helpful
                    Very good price with free shipping
                    The battery is exactly what I was looking for and the price was very competitive. The battery is sealed and maintenance free so no checking acid levels or worrying about spills. It is a very heavy battery (what lead batteries aren't) but the UPS guy delivered it safely. I've only had it installed for a few weeks and tested if a few times, once for an entire afternoon, but it seems to hold a charge well and runs the Wayne Emergency Backup Sump Pump Model# ESP25 very well. It feels good to have a strong backup system in place and this battery is a key component of the system.
                    by
                    • DIY
                    • Verified Purchase
                    • Recommended
                    7 found this review helpful
                    ease of installation was not complicated, quality will be determined in product lifespan, value is priced by market
                    so far so good, batteries ordered in a set for a 24v backup sump pump system, time will tell since they are only several months old and haven't been charged/discharged often
                    by
                    • DIY
                    • Verified Purchase
                    • Recommended
                    Easy to install if you can cut and glue PVC. Calls our cellphones if it trips on.
                    Needs to have a battery backup for your computer if your telephone runs through your cable line. Otherwise if power fails pump will run but you don't get a call. If you have a solid land line no problem.
                    by
                    • DIY
                    • Verified Purchase
                    • Recommended
                    3 found this review helpful
                    This customer chose to rate the product and not provide text.
                    by
                    • Verified Purchase
                    Battery was delivered undamaged. Fits my existing battery box perfectly.
                    by
                    Response from Wayne Water SystemsMay 20, 2026
                    Thank you for the 5 star review and positive feedback. If you ever need more information or have questions about any of our other products, feel free to reach out anytime. We’d love to have the chance to serve you again! Thanks again for your support!
                    Great battery ! Last for a long time ! Best choice I made when choosing a battery. Arrived quickly and a smooth transaction. Great price as well
                    by
                    Response from Wayne Water SystemsMay 19, 2026
                    Thank you so much for your kind words and for taking the time to leave a review! We're thrilled to hear that you're happy with the quality of the WSB1275. We take great pride in offering products that meet high standards, and it’s wonderful to know that the WSB1275 met your expectations. Your feedback means a lot to us, and we’re grateful for your support. If you ever have any questions or need assistance with anything, we’re here to help!
                    This customer chose to rate the product and not provide text.
                    by
                    • Verified Purchase
                    Battery was not fully charged and also seems to be not charging at all. Would probably not purchase again due to this.
                    by
                    Response from Wayne Water SystemsDec 11, 2025
                    Hello John,

                    The batteries we sell are never fully charged for safety regulations when shipping. That is why we do state the battery needs 48 to fully charge once in the system. If the battery is not taking a charge you can take it to your local auto store, and have the battery tested under load to make sure the battery is working properly.
                    • Verified Purchase
                    Showing 1-10 of 203 reviews

                    Compare Key Features

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                    Product Snapshot

                    Ideal for backup power during outages, this 75Ah maintenance-free battery ensures reliable sump pump operation for 32 hours.
                    Ideal for homeowners needing reliable backup power for two sump pumps, ensuring a dry basement during outages.
                    Ideal for homeowners needing reliable backup power, ensuring flood protection during outages with 24/7 monitoring and smart alerts.
                    Ideal for homeowners wanting reliable backup power, ensuring flood protection during outages with smart monitoring.

                    Battery Capacity

                    75 Ah

                    Run Time

                    32 hr
                    Days of intermittent pumping

                    Automatic Switch Over

                    Maintenance-Free

                    Alarm System