---
product_id: 73060226
title: "The Basement Watchdog Maintenance Free (AGM) Standby Battery for Backup Sump Pumps (BW-27AGM)"
brand: "the basement watchdog"
price: "23074900₫"
currency: VND
in_stock: true
reviews_count: 8
url: https://www.desertcart.vn/products/73060226-the-basement-watchdog-maintenance-free-agm-standby-battery-for-backup
store_origin: VN
region: Vietnam
---

# Up to 80-hour backup power Maintenance-free AGM tech Sealed lead acid, no refills The Basement Watchdog Maintenance Free (AGM) Standby Battery for Backup Sump Pumps (BW-27AGM)

**Brand:** the basement watchdog
**Price:** 23074900₫
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your peace of mind—never get caught off guard!

## Quick Answers

- **What is this?** The Basement Watchdog Maintenance Free (AGM) Standby Battery for Backup Sump Pumps (BW-27AGM) by the basement watchdog
- **How much does it cost?** 23074900₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/73060226-the-basement-watchdog-maintenance-free-agm-standby-battery-for-backup)

## Best For

- the basement watchdog enthusiasts

## Why This Product

- Trusted the basement watchdog brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Robust & Ready:** Heavy-duty sealed lead acid design ensures durable, leak-proof performance in critical moments.
- • **Compact Powerhouse:** Sized perfectly at 8x12x12 inches and weighing 49.7 lbs for easy installation without sacrificing capacity.
- • **Effortless Reliability:** Maintenance-free AGM battery means zero hassle—no fluid or water refills ever.
- • **Seamless Compatibility:** Works flawlessly with multiple Basement Watchdog sump pump models, including older versions (post-2014).
- • **Extended Power Resilience:** Delivers up to 80 hours of backup on key Basement Watchdog systems—stay protected through any outage.

## Overview

The Basement Watchdog BW-27AGM is a maintenance-free AGM sealed lead acid battery designed to provide up to 80 hours of backup power for various Basement Watchdog sump pump systems. Its durable, leak-proof casing and compatibility with multiple models make it an essential, hassle-free solution for reliable sump pump operation during power outages.

## Description

THE BASEMENT WATCHDOG Model BW-27AGM Maintenance Free (AGM) Sump Pump Battery

## Features

- Maintenance free - no need to add battery fluid or distilled water
- Up to 40-hour protection (based on a 10% duty cycle) on the Basement Watchdog Big Dog (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, CITS-50)
- 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, CITE-33)
- Runs various Basement Watchdog sump pump systems intermittently for days
- Older versions, purchased before 2014 of the Basement Watchdog Special, Basement Watchdog Big Dog and Basement Watchdog Big Combo systems that include the Remote Terminal are compatible with the Basement Watchdog Maintenance Free/AGM Battery. Using a maintenance free battery with an older non-compatible system may cause false alarms.
- California Prop 65: WARNING: Battery posts and terminals contain lead, lead compounds or other chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. See https://www.p65warnings.ca.gov/

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Black |
| Material | Battery Casing Material |
| Brand | THE BASEMENT WATCHDOG |
| Item dimensions L x W x H | 8 x 12 x 12 inches |
| Item Weight | 22.6 Kilograms |
| Included Components | GLENTRONICS - BW-27AGM |
| Number of Pieces | 1 |
| UPC | 717301122538 |
| Manufacturer | THE BASEMENT WATCHDOG Store |
| Part Number | GLENTRONICS - BW-27AGM |
| Item Weight | 49.7 pounds |
| Product Dimensions | 8 x 12 x 12 inches |
| Country of Origin | Malaysia |
| Item model number | BW-27AGM |
| Batteries | 1 12V batteries required. (included) |
| Style | Above Ground |
| Power Source | Battery Powered |
| Item Package Quantity | 1 |
| Batteries Included? | Yes |
| Batteries Required? | No |
| Battery Cell Type | Sealed Lead Acid |
| Warranty Description | Warranty |

## Product Details

- **Color:** Black
- **Material:** Battery Casing Material
- **Brand:** THE BASEMENT WATCHDOG
- **Item dimensions L x W x H:** 8 x 12 x 12 inches
- **Item Weight:** 22.6 Kilograms

## Images

![The Basement Watchdog Maintenance Free (AGM) Standby Battery for Backup Sump Pumps (BW-27AGM) - Image 1](https://m.media-amazon.com/images/I/819dCJkLBCL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Finally a maintenance free battery
*by T***9 on May 15, 2025*

Been waiting for watchdog to offer a maintenence free battery for years. This works great with my older backup watchdog pump (installed about 13-14 yrs ago). The instructions even show you what to do with the probe that you would insert into the old batteries. Took about 3 minutes to hook up.

### ⭐⭐⭐⭐⭐ OK battery for old Watch Dog back up  sump pump
*by S***N on April 6, 2025*

Worked with my old Watchdog battery back-up sump pump which is probably 15 years old. or more. (Yellow box and yellow pump, battery probe attaches to positive terminal to this battery to ) Nice that I did not have to add acid to the battery, but not keen about the battery terminals which are 2 bolts and 4 washers which are provided. Yes, it likely does weigh around 50 pounds. The extra $30 more I paid on amazon than at a big box store 25 miles away was worth it to this senior lady!

### ⭐⭐⭐⭐⭐ Old battery wouldn’t hold charge
*by A***R on January 4, 2025*

Replaced and is working fine

## Frequently Bought Together

- THE BASEMENT WATCHDOG Model BW-27AGM Maintenance Free (AGM) Sump Pump Battery
- Wi-Fi Module 2.0 for Battery Backup Sump Pump Systems

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-06*