Model # WSS30V

Internet #203448472

Wayne 1/2 HP Battery Backup Sump Pump System


1/2 HP Battery Backup Sump Pump System

  • Pumps up to 4200 (Primary) and 3300 (Back-up) GPH at 0 ft.
  • High flow, corrosion-resistant, battery back-up
  • Continuous operation and protection when the power is out
$34579 /each
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Frequently Bought Together

Product Overview

Wayne 1/2 HP Primary Sump and Battery Back-Up Pump System comes completely pre-assembled for quick and easy installation. Top suction primary sump pump design minimizes clogging and eliminates the need for a vent or weep hole in the installation. This heavy duty combination system requires a 40 Amp hour or 75 Amp hour deep cycle battery, for continuous operation when the power is out. Protect your home.

California residents: see   Proposition 65 information

  • Designed for 15 in. Dia or larger sump basins
  • High flow, corrosion-resistant, battery back-up pump with reliable reed float switch with battery box and charger
  • (2) heavy-duty check valves
  • Pre-assembled and preset for quick installation; simple drop-in installation
  • 120-Volt primary pump (CDU800)
  • 1/2 HP; max. flow rate is 4200 GPH; 3150 GPH at 10 ft. of discharge lift
  • Approximate on level 9 in. - off level 4 in.
  • High-capacity battery back-up pumps up to 3300 GPH at 0 ft.
  • 12-Volt back-up pump (ESP25)
  • Additional Features:

  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Maximum Pumping Height (ft.)
Product Depth (in.)
Product Height (in.)
Product Width (in.)
Switch-Off Height (in.)
4 in
Switch-On Height (in.)
9 in


Amperage (amps)
Batteries Included
Battery Back-Up
Battery Life (hours)
0 h
Battery Type Required
12 Volt
Cord Length (ft.)
Discharge Flow @ 0 ft. (gallons/hour)
Discharge Flow @ 10 ft. (gallons/hour)
Discharge Flow @ 15 ft. (gallons/hour)
Horsepower (hp)
1/2 hp
Housing Material
Impeller Material
Maximum Working Temperature (F)
Minimum working temperature (F)
Number of Batteries Required
Power Type Required
AC or DC
Product Weight (lb.)
Pump Switch Type
Sump Pump Outlet Diameter Type
1-1/2 FPT
Voltage (volts)

Warranty / Certifications

Certifications and Listings
No Certifications or Listings
Manufacturer Warranty
5 Year Limited Warranty

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Customer Questions & Answers

I can only see one float switch. Will the backup DC pump operate on a failure of the main pump or...

I can only see one float switch. Will the backup DC pump operate on a failure of the main pump or only on loss of power?
Asked by: DS
the backup will kick on if the main fails or loss of power. the backup switch is attached to the pvc pipe. little white round object.
Answered by: hinerism
Date published: 2017-03-07

Does it have an automatic shut off switch?

Asked by: Pooltime325
no it does not once the pump is triggered to come on it runs for about 20 to 25 seconds and shuts off until triggered again
Answered by: fritz
Date published: 2017-01-25

What is the best battery to use with this pump?

What is the best battery to use with this pump? Can you use any 12 volt deep cycle marine battery, or does it have to be the Wayne Battery?
Asked by: Tom
i used a exside deep cell battery. works great.
Answered by: hinerism
Date published: 2017-03-07

What battery need to be used with this product?

Asked by: Jay
I used the maintenance free battery, but you could use any marine deep cycle battery. but if you go cheap, expect corresponding performance.
Answered by: JohnG
Date published: 2016-11-29
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Customer Reviews

1/2 HP Battery Backup Sump Pump System is rated 4.6 out of 5 by 90.
Rated 5 out of 5 by from Very easy, drop in installation. Picked up a deep cell battery ($100.00) with a 180 minute reserv... Very easy, drop in installation. Picked up a deep cell battery ($100.00) with a 180 minute reserve and hooked it up. I decided to test the battery so I ran the system on battery power only for 8 hours. The pump cycled every 8 minutes for 8 hours and it only took the battery down to 90% from 100%. I'm calculating that the system with run for at least 3 days without electrical power. That is just what I was hoping for. Couldn't be happier. One last thing, the system comes with 2 built in check valves. Remove your existing valve if you have one on in your line. The box shows the check valves location. Very, very silent operation.
Date published: 2017-03-07
Rated 5 out of 5 by from Wayne 1/2 HP with backup After 2nd ins. Claim in 7 yrs., 1st with a power fail overnight with hurricane Irene & 2nd with a jammed impeller and several power outages with summer durecho & hurricane Sandy, I decided to go with a battery backup sumpump system. Even though I have a generator, this system will give you piece of mind while away or on vacation. 2nd backup pump will work even if you don't lose power with the float being higher than the main pump float. Hookup was easy although directions are generic. Get a deep cycle marine battery 12v. I bought mine at Interstate battery for $110. Bring battery case with you when you buy it. This is a superior product to HD Watdog and pumps work well. I recommend testing both pumps monthly putting water in sump hole and test battery as well. Installed last month so 5 star rating for now with regards only to install & initial quality not longevity.
Date published: 2017-04-30
Rated 5 out of 5 by from I had a failure of my previous battery backup sump system. The float switch failed. I was looking... I had a failure of my previous battery backup sump system. The float switch failed. I was looking for a better designed system. The Wayne system seemed to fit the bill. The electric pump intake sits at the same level as the battery powered pump. The float switch seems to be more robust that my previous system. It also allows for easy checking of battery backup operation. The unit came pre-assembled and was an easy drop-in fit to my sump pit. Installation took less than 30 min. The unit has been in place for about a month now and the electric pump is very quiet and does a good job of evacuation of the sump pit. I also like the fact that the pump was assembled in the U.S. The unit also came with a 5-year warranty which was better than several of the competitors. One thing that I now realize is that sump pumps should be cleaned and checked annually for efficient operation. This was probably the reason my previous pump failed.
Date published: 2017-04-25
Rated 5 out of 5 by from A stress reliever. After all the recent rain my sump was running every 45 seconds. Having a weekend away planned was very stressful wondering how my old pump would hold up. Ordered this on Thursday and it came Friday. measured the pvc connector and cemented it in place on pump. Had about a minute to get this in place. Got the battery box set and it was on. Daughter held the cables as I pulled the old one out and installed this one. Had it pumping water in less than a minute. Tested the battery backup and we were good to go. Enjoyed our weekend and came home to a dry basement.
Date published: 2017-04-10
Rated 4 out of 5 by from Good pump, easy install, poor planning for battery box. Everything went very well, however I got a 27 series deep cycle from the auto store, and unfortunately, the lid doesn't fit right. They have built the electronics into the lid of the battery box, which is nice, but it hits the top of the battery. There was also no strap to hold the lid closed, unusual for a battery box not to come with a strap.
Date published: 2017-01-24
Rated 5 out of 5 by from Easy install , good product The pumps seem like good quality and installation was quite easy. I needed to buy a new drain line due to size differences but I connected it and was operational in less than an hour. I bought a low cycle battery at Wal-Mart for $100. Tested out fine, second float is higher so needs much more water to test backup.
Date published: 2017-05-03
Rated 5 out of 5 by from The sump pump(s) seem to be of good quality and... The sump pump(s) seem to be of good quality and was so easy to install. You do not have to glue a bunch of pvc piping and then drill a hole. Although the new pump pipe was a little off center, all we had to do is to cut the lid a bit instead of purchasing a new lid. Quick, easy and so quiet.
Date published: 2017-05-23
Rated 5 out of 5 by from So far, so good Install was easy and performance has been impressive. Both pumps move the water as expected. Because I was replacing a pedestal Sump, I had to play with the height, but now it runs fewer times each hour and I think it saved us some money on the electric bill this month.
Date published: 2017-02-07
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