0717301121203

Basement Watchdog

Model # BWD12-120C

Internet # 100065446

Store SKU # 130781

Store SO SKU # 1000895759

Big Dog Computer-Controlled AC/DC Battery Backup Sump Pump System

$497.00 /each

Frequently Bought Together

Product Overview

The powerful Basement Watchdog Big Dog Computer-Controlled AC/DC Battery Backup Sump Pump System pumps 3,500 GPH at 0 ft. of lift or 2,200 GPH at 10 ft. of lift. This convenient pump fits next to the main AC pump and automatically begins pumping during power outages when the main pump fails or when water flow exceeds the capacity of the main pump. This reliable sump pump system features a 20 Amp charger that recharges the battery quickly and runs the pump with AC current instead of the battery if the power is on.

  • Pumps 2,200 gph at 10 ft. Lift and 3,500 gph at 0 ft. Lift
  • User-friendly control panel lights up with a warning and describes what to do for easy maintenance
  • A sensor monitors battery fluid levels for increased piece of mind
  • Runs pump once per week to ensure operation and backup pump will run directly on a/c power if available
  • Corrosion-resistant thermoplastic housing
  • Includes a dual float switch for added protection
  • Includes powerful 20 amp charger that recharges the battery quickly and shuts off completely to prolong battery life
  • Backup pump will run directly on ac power if available
  • Increase the run time by connecting two 7.5 Hour Batteries (30HDC140S) using the Basement Watchdog Parallel Jumper Cable (PJC - Available online). Additional acid pack (Z-Pack) required

Info & Guides

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Specifications

Dimensions

Product Depth (in.) 
Product Height (in.) 
8.25 
Product Width (in.) 
8.75 

Details

Amperage (amps) 
10 
Batteries Included 
No 
Battery Life (hours) 
7.5 h 
Battery Type Required 
30HDC140S - 7.5 Hour Basement Watchdog Deep Cycle Battery 
Housing Material 
Thermoplastic 
Number of Batteries Required 
Product Weight (lb.) 
5 lb 
Returnable 
90-Day 
Voltage (volts) 
12 

Warranty / Certifications

Certifications and Listings 
SSPMA Certified 
Manufacturer Warranty 
2 Years 

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Customer Questions & Answers

3 Questions5 Answers

Customer Questions & Answers

Big Dog Computer-Controlled AC/DC Battery Backup Sump Pump System
Big Dog Computer-Controlled AC/DC Battery Backup Sump Pump System

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2 answers

is battery included with this system?

This question is from Big Dog Computer-Controlled AC/DC Battery Backup Sump Pump System
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January 17, 2016
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Answers (2)

Asked by
Lincolnshire
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Home Improvement Profile: Professional
February 1, 2016
Answer: 
This is incorrect this system does not include battery or acid. The system comes with the controller and pump. The box is included for the battery but the actual battery does need to be purchased separately. Please contact us directly at 800.991.0466 ext 3 for customer support if you are in need of further assistance
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January 28, 2016
Answer: 
Yes, the systems includes a battery and a charger.
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2 answers

Can I purchased the battery only for the Watch big Dog unit , what model is it ?

This question is from Big Dog Computer-Controlled AC/DC Battery Backup Sump Pump System
Asked by
Chicago, il
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July 20, 2015
I just need a replacement battery.
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Asked by
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July 29, 2015
Answer: 
The correct battery for the "Big Dog" system is the Basement Watchdog 7.5 hour standby battery. The model number for that one is 30HDC140S.
Be sure to purchase the box of battery acid that goes with it. Usually the boxes of battery acid our sold in stores right next to the batteries themselves. If your local store doesn't have the acid in stock you would need 6 quarts of 1.265 specific gravity battery Read More
The correct battery for the "Big Dog" system is the Basement Watchdog 7.5 hour standby battery. The model number for that one is 30HDC140S.
Be sure to purchase the box of battery acid that goes with it. Usually the boxes of battery acid our sold in stores right next to the batteries themselves. If your local store doesn't have the acid in stock you would need 6 quarts of 1.265 specific gravity battery acid. Read Less
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July 23, 2015
Answer: 
Thank you for your recent inquiry with The Home Depot. Unfortunately, I need more information from you in order to properly address your question. For any other questions, please call us at HomeDepot.com Customer Service 800-430-3376. Thank you for shopping Home Depot.
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1 answer

how long does a good battery last

This question is from Big Dog Computer-Controlled AC/DC Battery Backup Sump Pump System
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decorah,iowa
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June 25, 2015
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Asked by
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July 29, 2015
Answer: 
Typically our batteries should last an average of 5-7 years overall.
The key to getting the longest possible lifespan out of these batteries is to check the fluid level around every 6 months or so. It's best to add a small amount more often than waiting too long and having to add a large amount of water all at once.
Be sure to always use distilled water and not drinking or tap water.
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Customer Reviews

Rated 3.8 out of 5 by 32 reviewers.
Rated 1.0 out of 5.0 by Unit quit working after 1 year and manufacturer refused to warranty it. I spent over $500 for the big dog system and the company would not warranty it because it was coming up as an older serial number. Apparently you need to check the number of the unit you buy. Bad customer service. January 19, 2016
Rated 1.0 out of 5.0 by Not all that's it's cracked up to be... I've owned this thing for a few years, and thought all was well. I've checked it from time to time, and it always says everything is fine. While the pump works fine, and I do catch the pump being tested from time to time, I found the maintenance of the battery is horrible. Evidently, it must overcharge the battery, as all through the water level indicator showed good, I decided to check anyway, and found the battery 1/2 gallon low. Ergh! I call and the tech says the water level indicators are notoriously unreliable so you have to check the batteries every 3 months. Well, how about fixing the sensor so it actually works right? Or, remove the feature so people don't rely on it. So I fill up the battery, charge them over night with my automotive charger, and let it rest a bit and find it's only holding around 12.2v. Great, a ruined battery. So, before I go to buy a new one, I hook up back up just to have something in the interim, and find that the system is indicating 12.2v is 100% !!! What? 12.2v fully charged is less than 25% capacity bordering on junk! Wow, it's pretty clear the charging and maintenance portion of this unit is garbage. I'd suggest that you do NOT rely on the battery level sensor and check it manually - and frequently. Then I'm going to find a way to disable the charging function and just use a battery tender so I'm sure they are being properly charged. You know, the thing that really gets me is, you spend top dollar because you want the piece of mind that your finished basement is protected. It's really irritating when you find out that your investment is just a mirage, as although it's showing all's well, the reality is, if I had had a long outage, this thing probably would have only lasted a few minutes due to improperly maintaining and ruining the battery. IMHO, you are much better off just getting a manual switched system, and use a battery tender as all of the fancy features of this expensive unit don't work correctly once you peel back the flimsy veneer. Better yet, use the ~$600 you'd spend on this system with the required battery and tax, and use that as a down payment on a NG backup generator that will offer real protection. When you factor in burning through $150 batteries every couple of years, its a no brainer. I've attached a photo of the control panel showing all's well, and the battery charge level is 100%, while the next photo shows the connected battery only has 12.20 Volts. Junk, Imho. December 29, 2014
Rated 1.0 out of 5.0 by Junk !!!! Purchased a combo unit 4 years ago only to have the main pump Rot out. I'm talking HUGE holes in the sides. Home Depot replaced it, only to have the exact same thing happen. Never,ever again will I spend over $500 on this complete piece of junk. Spend your time and money on a better product. October 31, 2015
Rated 5.0 out of 5.0 by A must have for basements with sump pits This product has saved my basements on several occasions. The system has a powerful pump, charger, several monitoring features and easy to follow step by step instructions on how to install and troubleshoot the system. The company also has outstanding customer service. I used two 7.5 hour Watchdog batteries (in parallel) for each system which provides days pumping capacity. You would need a parallel jumper cable which I bought from the manufacturer. One piece of advice…although the system monitors the battery fluid levels, which works very well, I like to check mine when I turn the clocks back or just before going on vacation. Overall great product!!! December 30, 2009
Rated 3.0 out of 5.0 by Deceptive description Describing this product as an AC/DC battery system is not accurate since the battery and acid to power the system is not included in this kit. I spent an additional $125 for a battery and $25 for acid to put in the battery. There is a censor that needs to be installed and the electrical path so the battery only runs when the home power is off can be confusing. I had a plumber install this system ($125) including adding the acid to the battery just to be sure it was installed correctly. I live on the waterfront and need a dependable pump for daily use. This is the 2nd system I've had to install in 11 years. August 5, 2014
Rated 1.0 out of 5.0 by Big waste of money I purchased this system last Spring (2013). By this the Fall (2013) he main pump was shot. My sump pump runs a lot - as many as 12+ times per day during the Spring and several times per day during the Summer, unless it is very dry out. For others, whose sump runs only a few times per season, this product might be alright, but I won't buy one again Went back to Wayne. Had one original to the house. 10+ years of good service. Rodents chewing on wiring brought it down. Gave it to my neighbor who fixed it and it's still going. April 20, 2014
Rated 5.0 out of 5.0 by BONUS--it's compatible with an AGM battery DItto other Excellent reviews. The only thing I'm adding is the fact that the electronics on the Big Dog model (as well as the inexpensive BWE ) are fully compatible with an Absorbed Glass Mat (AGM) battery according to Tech Support. Why is that important? Because, AGM batteries don't produce hydrogen gas when they charge--so pilot lights and other ignition sources in the basement pose no problems! They won't leak or spill even if they're broken, they survive most freezes, and warranties are twice as long as a lead -acid design. (I am NOT an advertiser--just a very happy camper) April 14, 2010
Rated 5.0 out of 5.0 by Great Product This unit was very easy to install, lightweight and not noisy (compared to the old one). I asked one of the stock guys for assistance at the store before I bought the sump pump and he told me about the battery and battery acid sold separately, if he didn’t tell me I would have assumed that it was all in there. However, the sump pump is a little pricey but I read these reviews and seemed like the right way to go. The sump pump worked for about 2 hours straight once I got it installed and I feel more at ease knowing there is a backup if the power goes out. November 26, 2013
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