My Account

Sign Out

Cart 0 items
All Departments

Model # BW-27AGM

Internet #205907924

Store SKU #1002274319

Basement Watchdog Maintenance Free (AGM) Standby Battery
Share
save to favorites Save to Favorites
print Print
0717301122538

Basement Watchdog

Maintenance Free (AGM) Standby Battery

  • Compatible with most Basement Watchdog systems
  • Doesn't require distilled water or addition of battery fluid
  • 48-hour battery life for optimal longevity and use
$ 185 00
store icon Loading Buying Options...
package icon Loading Buying Options...
Sorry, but we ran into issues loading these options. Please try refreshing.

Frequently Bought Together

Frequently Bought Together

Product Overview

  • Compatible with most Basement Watchdog systems
  • Doesn't require distilled water or addition of battery fluid
  • 48-hour battery life for optimal longevity and use
The Basement Watchdog Maintenance Free AGM Battery is completely sealed making it the perfect choice for years of reliable service for your battery backup sump pump system without having to add battery fluid or distilled water. This battery is compatible with most Basement Watchdog systems including the Basement Watchdog Emergency (BWE), Basement Watchdog Combination (DFK961), Basement Watchdog Special+ (BWSP+), Basement Watchdog Big Dog+ (BWD12-120C+) and Basement Watchdog Big Combination sump pump system (BW4000) with Special + backup controller. Look for the + on the upper left hand corner of the BWSP+ and BWD12-120C+ control panel to ensure compatibility. This battery will run the various Basement Watchdog sump pump systems intermittently for days. Connect 2 batteries to increase the run time (BWSP+, BWD12-120C+ and BW4000 with Special + backup controller). Parallel battery cables required.
  • Maintenance free - no need to add battery fluid or distilled water
  • Compatible with all versions of the Basement Watchdog Emergency (BWE), Basement Watchdog combination (DFK961) and the newest version of the Basement Watchdog special, the special+ (BWSP+), the Basement Watchdog big dog+ (BWD12-120C+) and Basement Watchdog big combination (BW4000) sump pump systems
  • Up to 40-hour protection (based on a 10% duty cycle) on the Basement Watchdog big dog+ sump pump system (BWD12-120C+)
  • Up to 48-hour protection (based on a 10% duty cycle) on the Basement Watchdog special + (BWSP+) and Basement Watchdog big combination sump pump system (BW4000)
  • Up to 80-hour protection (based on a 10% duty cycle) on the Basement Watchdog emergency (BWE) and Basement Watchdog combination sump pump system (DFK961)
  • Runs pump intermittently for days
  • Please note this battery is not compatible with older versions of the Basement Watchdog Special (BWSP), Basement Watchdog Big Dog (BWD12-120C) or Basement Watchdog Big Combination (BW4000) systems
  • California residents see Prop 65 WARNINGS

Product Overview

  • Compatible with most Basement Watchdog systems
  • Doesn't require distilled water or addition of battery fluid
  • 48-hour battery life for optimal longevity and use
Model #: BW-27AGM
Sku #: 1002274319
Internet #: 205907924

The Basement Watchdog Maintenance Free AGM Battery is completely sealed making it the perfect choice for years of reliable service for your battery backup sump pump system without having to add battery fluid or distilled water. This battery is compatible with most Basement Watchdog systems including the Basement Watchdog Emergency (BWE), Basement Watchdog Combination (DFK961), Basement Watchdog Special+ (BWSP+), Basement Watchdog Big Dog+ (BWD12-120C+) and Basement Watchdog Big Combination sump pump system (BW4000) with Special + backup controller. Look for the + on the upper left hand corner of the BWSP+ and BWD12-120C+ control panel to ensure compatibility. This battery will run the various Basement Watchdog sump pump systems intermittently for days. Connect 2 batteries to increase the run time (BWSP+, BWD12-120C+ and BW4000 with Special + backup controller). Parallel battery cables required.

  • Maintenance free - no need to add battery fluid or distilled water
  • Compatible with all versions of the Basement Watchdog Emergency (BWE), Basement Watchdog combination (DFK961) and the newest version of the Basement Watchdog special, the special+ (BWSP+), the Basement Watchdog big dog+ (BWD12-120C+) and Basement Watchdog big combination (BW4000) sump pump systems
  • Up to 40-hour protection (based on a 10% duty cycle) on the Basement Watchdog big dog+ sump pump system (BWD12-120C+)
  • Up to 48-hour protection (based on a 10% duty cycle) on the Basement Watchdog special + (BWSP+) and Basement Watchdog big combination sump pump system (BW4000)
  • Up to 80-hour protection (based on a 10% duty cycle) on the Basement Watchdog emergency (BWE) and Basement Watchdog combination sump pump system (DFK961)
  • Runs pump intermittently for days
  • Please note this battery is not compatible with older versions of the Basement Watchdog Special (BWSP), Basement Watchdog Big Dog (BWD12-120C) or Basement Watchdog Big Combination (BW4000) systems
  • California residents see Prop 65 WARNINGS

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Info & Guides

Customers Also Compared These

Price
$129.00
$185.00
$254.00
Name Big Standby Battery Maintenance Free (AGM) Standby Battery 75 Amp Hour Maintenance-Free Battery
Brand Basement Watchdog Basement Watchdog Wayne
Ratings (262) (109) (117)
Voltage (volts) 12 12 12
View Product View Product View Product

Specifications

Dimensions

Product Depth (in.)
6.5
Product Height (in.)
9
Product Width (in.)
10.25

Details

Amperage (amps)
75
Batteries Included
Yes
Battery Life (hours)
48
Battery Type Required
AGM Maintenance Free Battery
Housing Material
Thermoplastic
Number of Batteries Required
1
Product Weight (lb.)
50lb
Returnable
90-Day
Voltage (volts)
12

Warranty / Certifications

Certifications and Listings
No Certifications or Listings
Manufacturer Warranty
1 Year

Specifications

Dimensions

Product Depth (in.)
6.5
Product Height (in.)
9
Product Width (in.)
10.25

Details

Amperage (amps)
75
Batteries Included
Yes
Battery Life (hours)
48
Battery Type Required
AGM Maintenance Free Battery
Housing Material
Thermoplastic
Number of Batteries Required
1
Product Weight (lb.)
50lb
Returnable
90-Day
Voltage (volts)
12

Warranty / Certifications

Certifications and Listings
No Certifications or Listings
Manufacturer Warranty
1 Year

Questions & Answers

Basement watchdog maintenance free battery use with an old watchdog system?

Can use this battery with a old watchdog system ?
Asked by: Subpump
Keep in mind that this battery does not have a hole to detect water level. I believe you will need to connect that wire (the one that is inserted in the hole to detect water level) to one of the red terminal
Answered by: Mphat
Date published: 2018-11-27

My old battery has a probe that goes down thru the yellow battery cap. Is the maintenance free ba...

My old battery has a probe that goes down thru the yellow battery cap. Is the maintenance free battery compatible with my old system?
Asked by: Jim
Since it’s a sealed battery the probe is no longer needed or used. Connect the probe to the positive (+) post of the sealed battery to silence the alarm. I am using the battery with a Wayne WSM3300 auto test/notification backup pump which is more powerful to stay dry!!!
Answered by: JR
Date published: 2018-06-28

Can I use a watchdog AGM maine free battery with my watchdog special? If so what do I do with the...

Can I use a watchdog AGM maine free battery with my watchdog special? If so what do I do with the sensor probe that was used to monitor the wet cell battery?
Asked by: Ron
You would connect the probe to the positive terminal on the battery. I was able to find the information in the manual for my specific unit here: https://www.basementwatchdog.com/support/pump-manuals-and-maintenance/
Answered by: Tony
Date published: 2018-06-05

If a backup sump pump using this battery doesn't get used, how long can I expect the battery to b...

If a backup sump pump using this battery doesn't get used, how long can I expect the battery to be good?
Asked by: tf6217
several years, assuming you have it on the trickle charger
Answered by: wrench
Date published: 2018-04-11
  • y_2019, m_1, d_21, h_15CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.9
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_57
  • loc_, sid_205907924, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=BEST_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=POSITIVE_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 28ms
  • QUESTIONS, PRODUCT

Customer Reviews

Maintenance Free (AGM) Standby Battery is rated 4.4 out of 5 by 109.
Rated 5 out of 5 by from Like not having to use distilled water as in previous batteries. Like not having to use distilled water as in previous batteries.
Date published: 2019-01-01
Rated 3 out of 5 by from I love that the maintenance free version of this battery is available. It sure beats buying the ... I love that the maintenance free version of this battery is available. It sure beats buying the old one and having to pour the acid in it. Then it is necessary to top off the water occasionally. This can be a messy affair. My one concern is that the control box is showing that the battery will only run for four hours while the older style battery would run for 8. When I first connected the battery it said 7. I'm hoping that the control box is not accurate because for the price of this battery it should last as long as the older style one.
Date published: 2018-12-28
Rated 4 out of 5 by from So far seems to be working.... So far seems to be working.
Date published: 2018-12-26
Rated 4 out of 5 by from As far as I know. Power hasn’t gone out yet!... As far as I know. Power hasn’t gone out yet!
Date published: 2018-12-26
Rated 5 out of 5 by from Everybody was very helpful and cordial... Everybody was very helpful and cordial
Date published: 2018-12-26
Rated 5 out of 5 by from Easy installation and easy to follow instructions. Doorstep delivery... Easy installation and easy to follow instructions. Doorstep delivery made for added convenience. Output 13.26 VDC. Very satisfied with AGM.
Date published: 2018-12-18
Rated 5 out of 5 by from Worked great. Had big weekend rain no problems ... Worked great. Had big weekend rain no problems
Date published: 2018-12-11
Rated 5 out of 5 by from Worked as advertised ... Worked as advertised
Date published: 2018-12-07
  • y_2019, m_1, d_21, h_15
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.9
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_109
  • loc_, sid_205907924, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 29ms
  • REVIEWS, PRODUCT