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Basement Watchdog

Model # BWE

Internet # 100055241

Store SKU # 646661

Emergency Battery Backup Sump Pump System

This item has been discontinued.
The Home Depot no longer carries this specific product.

$138.00 /each
  • Sensor monitors battery fluid levels for increased piece of mind
  • Includes a dual float switch for added protection
  • Detailed manual makes installation easy




Model # BWE

Internet # 100055241

Store SKU # 646661

Store SO SKU # 1000895755

The Basement Watchdog Emergency Battery Backup Sump Pump can be easily installed in either a normal sized or narrow sump pit and automatically begins pumping during power outages, when the main pump fails or when water flow exceeds the capacity of the main pump. Its unique monitoring system sounds an alarm when maintenance is needed or a problem arises. A display panel indicator light will identify the cause of the alarm and the proper corrective action. The dual float switch provides double the protection and will activate the backup pump when either float is raised.

  • Pumps 1,000 GPH at 10 ft. of lift and 2,000 GPH at 0 ft. of lift
  • User-friendly control panel lights up with a warning and describes what to do for easy maintenance
  • Dual float switch provides 2X 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
  • Free lifetime technical support
  • 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
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Amperage (amps) 
Batteries Included 
Battery Life (hours) 
6 h 
Battery Type Required 
24EP6 - 6 Hour Basement Watchdog Emergency Sump Pump Battery 
Housing Material 
Number of Batteries Required 
Product Weight (lb.) 
3.5 lb 
Voltage (volts) 
Warranty / Certifications
Certifications and Listings 
1-UL Listed,SSPMA Certified 
Manufacturer Warranty 
2 Years 


Rated 3.9 out of 5 by 56 reviewers.
Rated 5.0 out of 5.0 by It surprised me... I bought the equivalent of this pump at the Home Depot in 2003. I live in an area that has a lot of 1/2 hp primary pump runs every 10 mins during peak flow, approx 40 gals per min @ 8' head (lift). I always thought if the main pump went out, this thing would be dead in 1/2 a day at best. In 2006, we had a horrendous ice storm here, some areas without power for over 10 days. This pump ran faithfully every 5-10 mins (using a 2 year old 925 cca boat deep cycle battery), and was still running when the power came back on after almost 4 days! It truly surprised me for a product in the entry level range. I attribute this partially to: 1. a careful installation with special routing to keep the discharge lift under 5' (I cheated and went directly through the foundation wall into a storm sewer, rather than up-and-over the foundation), and 2. A good battery. But be sensible folks- know what your primary main pump capacity is, the lift, and how much it is pumping (hint: check the charts at your primary pump manufacturer web site, then charts at the basement watchdog site). That will tell you if this pump can handle it. If your primary pump runs nonstop during storms, 1. its probably too small, and 2. you better plan on multiple backups, or something else with high capacity. And by the way, although the battery is not included, most Home Depots DO carry 2 models of the dry battery and also the acid to be added, the benefit here is a truly "new" battery, which can be serviced (not sealed), and accepts the voltage probe (although the unit will still function with the probe). The higher the amps of the battery, the longer it will pump, and the more you will pay. If the HD doesn't have it, you could also consider a serviceable deep cycle marine battery. After almost 10 years of service, 4 batteries, and multiple power failures without mishap, I have decided to get a new guessed it...this one again. One welcome improvement is the fact that the alarm can now be switched off during an event, and the float switch is now redundant (2 floats). Advice? 1. Keep the discharge pipe completely separate (after all this IS an emergency system) from other plumbing and as LOW as possible. 2. test the system regularly and expect to change out the battery every 2-3 years (don't forget you can recharge the battery from your car in a pinch or even use the car's battery in a real emergency). 3. try to mount the pump with support UNDER the pump. I had a neighbor with this exact model and their basement DID flood...our investigation found that the installing plumber hung the pump by the discharge pipe which cracked the base housing, so the pump ran but did nothing. 4. Be sensible and make sure this pump has the capacity you can even call their tech support- I have found them to be very helpful- the system will only be as good as the installation. I hope you have the same good luck I have had with this pump. October 29, 2012
Rated 1.0 out of 5.0 by Waste of money 1) I have a 10' lift and this puppy struggles moving the water. 2) The battery lasts less than a year (and I maintained it according to the instructions) - the charger basically overcharges the battery to death. 3) It doesn't recognize a dead battery until it attempts to use the battery, and then it's too late. Bottom line, I would not recommend wasting your money on this unit. I honestly don't know if there's a completely reliable system out there for under $600, but buying this system just gives you a false sense of security and you'll find yourself replacing it anyway. January 5, 2014
Rated 2.0 out of 5.0 by Watchdog is short lived and needs to be put down. I bought a home with this system professionally installed 15 months ago. I am ripping this out and installing something new. It did pump as a back up, but audible alarm will not silence even when turned off. If battery drains a little due to pumping, alarm will sound until battery is completely charged. Imagine a smoke alarm that will not shut off. You have to dissconect from battery (with wrench) and power brick from wall. After my unit screamed all night and battery would not take full's got to go (Yes water level in battery was maintained) Bottom line..does work, but will drive you insane. April 17, 2010
Rated 5.0 out of 5.0 by Watchdog back-up sump pump The unit came all packed up nice and tight and all complete. All I had to do was buy a marine battery at the store (I already knew that--no surprise). So directions were clear and it all went together nicely. Runs and operates great! Love the "no worries" aspect now if am gone from home knowing the water WILL be pumped out no matter what! September 2, 2015
Rated 2.0 out of 5.0 by The 10 foot lift is extreme...more like 8 feet I found that 10feet of lift is the extreme limit of the standpipe is filled with water already due to the return to the backflow valve. Remember that the lift is measured at the bottom of the sump tub so most homes will need about 13 feet. As a consequence the yellow supplement is useless and when needed will just run until it drains the battery out. This is not recommended unless the pump is in a crawl space. June 4, 2012
Rated 4.0 out of 5.0 by Easy install & Peace of Mind I just installed this backup sump pump. It was a pretty easy install. It took me about 3 hours, but that included draining and cleaning/scrubbing the sump pit. I also installed all new drain lines and check valves. I tested the unit and it worked as expected. I only have about 6 ft of lift from the bottom of the pit, so it handled the water fine. However, I am not sure how it would hold up if it were to run continuously. When the power goes out, I have a backup generator that will provide power to the main sump, but it is nice to have the battery backup to give me more time to get the generator fired up (or if I am not home when the power is out). It is also nice to know that it will kick in as a secondary sump if the main pump is not functioning correctly. Overall, worth the price for the peace of mind. Speaking of the price, when I went to the store to buy the unit, I was not aware "batteries sold separately." So, although the backup kit is only $140, add another $100 for the battery, and another $25 for the battery acid. That trip to Home Depot cost me $320 for the above, plus the new check values, 1-1/2" pipe, Y-connector, 45 degree connector, PVC primer & glue, and a new surge protector to help protect the investment. March 14, 2013
Rated 5.0 out of 5.0 by Basement protection made easy This all-in-one kit is very easy to install and gives me (and my wife) the piece of mind we need. Our finished basement is our central area for lounging and TV viewing and is also the home of my in-home office. A basement flood would be the end of most of our electronic gadgets (PC's, TV's, DVD/BluRay, etc) as well as our memories (digital pics and videos stored on our PCs). Our standard sump pump is a trooper and never makes us doubt it's ability to remove water from the basement, when we the power is on. We've had a couple bad storms this year with extended power outages and we were very anxious about basement flooding the entire time. This is the 2nd one of these kits I have installed. I hooked up one at the in-laws house and was so pleased by theirs that I added the same setup in my own home. The pump, while compact, will move water and move it fast. It's a nice unit and comes with everything you need EXCEPT: Battery and check-valve(s), and of course PVC pipe and accessories to hook it up. I would buy this product again, and if I ever have to install a battery backup sump pump, this will be my first choice. I would recommend this to my friends and family! December 11, 2010
Rated 3.0 out of 5.0 by Adequate Low-End Emergency Backup, but... Installed this myself about 8 years ago after we moved in and the former owner told us horror stories about coming home to a flooded finished basement. It does an adequate job of draining the sump pit properly when the power's out (happens once or twice a year, on average). I haven't been careful about maintaining the battery, and it's lasted until just a few days ago, so no complaints there. Only time it gave me pause was when we had an extended outage that lasted several days; it was Spring, so we probably had more water than usual, and the battery gave out after about 24 - 36 hours of intermittent usage, after which I ended up hooking up a generator to the house anyway. Overall, I'm glad I have this thing, but it doesn't give me complete peace of mind when we're away for extended periods and in that case I have the house-sitter double-check it. However, I have to say that this pump has never let me down so far. I do have one massive complaint, though: there is NO WAY TO SHUT OFF THE ALARM, and if your power goes out, the alarm will sound whenever the pump cycles. (There's a reset button that shuts it up, but only until the next pump cycle while on battery). In other words, if you have an extended outage, the alarm will be screaming continuously and can't be stopped. I fixed this by adding my own switch to cut out the speaker (which almost certainly voided the warranty). Wish they had built this option into the alarm somehow. April 1, 2014
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