---
product_id: 2906164
title: "The Basement Watchdog Big Dog CONNECT Battery Backup Sump Pump - Up to 3,500 GPH - WiFi-Capable w/Add-on Module (BWD12-120C)"
brand: "the basement watchdog"
price: "₨408261"
currency: LKR
in_stock: true
reviews_count: 9
category: "The Basement Watchdog"
url: https://www.desertcart.lk/products/2906164-the-basement-watchdog-big-dog-connect-battery-backup-sump-pump
store_origin: LK
region: Sri Lanka
---

# 3,500 GPH max flow WiFi alerts ready 20-Amp smart charger The Basement Watchdog Big Dog CONNECT Battery Backup Sump Pump - Up to 3,500 GPH - WiFi-Capable w/Add-on Module (BWD12-120C)

**Brand:** the basement watchdog
**Price:** ₨408261
**Availability:** ✅ In Stock

## Summary

> 💧 Stay dry, stay connected — the Big Dog’s got your basement covered!

## Quick Answers

- **What is this?** The Basement Watchdog Big Dog CONNECT Battery Backup Sump Pump - Up to 3,500 GPH - WiFi-Capable w/Add-on Module (BWD12-120C) by the basement watchdog
- **How much does it cost?** ₨408261 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/2906164-the-basement-watchdog-big-dog-connect-battery-backup-sump-pump)

## 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

- • **Seamless Integration:** Remote terminal links effortlessly with home security systems for total peace of mind.
- • **Unmatched Pump Power:** Handles up to 3,500 gallons per hour to keep your basement dry no matter the storm.
- • **Built for Reliability:** Durable design with dual float switch and weekly self-tests guarantees nonstop protection.
- • **Stay Connected Anywhere:** WiFi module compatibility delivers real-time alerts via text, email, or push notifications.
- • **Smart Battery Management:** 20-Amp multistage charger extends battery life and ensures rapid recharge when you need it most.

## Overview

The Basement Watchdog Big Dog CONNECT is a high-capacity battery backup sump pump system delivering up to 3,500 GPH with a 10-foot lift. Featuring a 20-Amp smart charger, it supports maintenance-free AGM or wet-cell batteries and can connect to a WiFi module for instant remote alerts. Designed for seamless integration with home security and equipped with a user-friendly control panel, it offers reliable, automated monitoring and long-lasting performance to protect your home during power outages.

## Description

The Basement Watchdog Big Dog CONNECT Battery Backup Sump Pump - Up to 3,500 GPH - WiFi-Capable w/Add-on Module (BWD12-120C) - Backup Sump Pump - desertcart.com

Review: Reliable, Versatile, Powerful, and Convenient Backup Sump Pump - The Basement Watchdog BWD12-120 Big Dog CONNECT is the most capable backup sump pump system I've ever seen. The pump runs strongly and efficiently on battery or on AC power during a main pump failure. It can switch between maintenance-free AGM battery or flooded standby battery. Run time is long. For heavy loads or long outages, it can charge and use two batteries at once. It can charge the battery while running the pump during a main pump failure. It routinely tests itself and reports the results. It supports a WiFi module that alerts the user to power and backup system conditions. The WiFi module can connect daisy-chained water alarms. The pump and the dual-sensor float switch can be unplugged from the controller for easier sump access and sump maintenance. Durability and reliability are top notch, as this product is built like a tank. I've used Basement Watchdog Big Dogs for decades, and this current version is the best. This is the system that I've installed in all my sumps and for family members and friends.
Review: Works great, quality parts - Works great comes with everything you need to install it except the battery. Installed in a basement. Tested by filling up the sump with water. This is installed as a secondary pump. Primary pump was unplugged during testing (to simulate power outage) unit turned on with no issue and will work great during a power outage. Has good output. Would recommend to anyone that needs a battery back up sump pump solution. sorry for the noisy video. The pump is rather quiet, but the water filling the sump cause most of the noise in the video.

## Features

- Pumps 2,200 GPH at 10 ft. lift and 3,500 GPH at 0 ft. lift
- USB port allows for connection to a Basement Watchdog WiFi Module (BW-WiFi2 - sold separately), allowing you to receive real-time alerts while away from home (text, email, or push notifications)
- Remote terminal allows the ability to connect with a home-security system or other device
- User-friendly control panel provides 24-hour-a-day monitoring, detects irregularities, sounds an alarm, and pinpoints problems and solutions
- Powerful 20-Amp multistage smart charger charges the battery quickly and shuts off completely to prolong battery life
- Runs the pump weekly to ensure it is working properly
- Compatible with maintenance-free AGM batteries or wet-cell batteries
- Can take over for your primary pump indefinitely when AC power is available
- Increase runtime by connecting 2 standby batteries (BW-27AGM) using the Basement Watchdog parallel jumper cable (PJC)
- Includes control unit with a dual float switch, pump with a 1½-inch PVC pipe adapter, battery box and 20-Amp charger (battery NOT included - sold separately)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000KXZO6M |
| Batteries Included? | No |
| Batteries Required? | Yes |
| Best Sellers Rank | #267,921 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #211 in Sump Pumps |
| Brand | THE BASEMENT WATCHDOG |
| Color | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (91) |
| Date First Available | January 2, 2009 |
| Global Trade Identification Number | 00717301121203 |
| Horsepower | 1.00 |
| Included Components | BWD-12-120C |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 5 pounds |
| Item model number | BWD12-120C |
| Manufacturer | Glentronics |
| Material | Plastic |
| Maximum Flow Rate | 3500 Gallons Per Minute |
| Maximum Lifting Height | 10 Feet |
| Part Number | BWD12-120C |
| Power Source | Battery Powered |
| Product Dimensions | 5"L x 9"W x 7.63"H |
| Style | Sump Pump |
| UPC | 717301121203 |
| Voltage | 100 Volts |
| Warranty Description | 2 year |

## Product Details

- **Brand:** THE BASEMENT WATCHDOG
- **Color:** Black
- **Item Weight:** 5 Pounds
- **Material:** Plastic
- **Maximum Flow Rate:** 3500 Gallons Per Minute
- **Maximum Lifting Height:** 10 Feet
- **Power Source:** Battery Powered
- **Product Dimensions:** 5"L x 9"W x 7.63"H
- **Style:** Sump Pump
- **Voltage:** 100 Volts

## Images

![The Basement Watchdog Big Dog CONNECT Battery Backup Sump Pump - Up to 3,500 GPH - WiFi-Capable w/Add-on Module (BWD12-120C) - Image 1](https://m.media-amazon.com/images/I/81rXcY4Z01L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable, Versatile, Powerful, and Convenient Backup Sump Pump
*by M***J on July 13, 2025*

The Basement Watchdog BWD12-120 Big Dog CONNECT is the most capable backup sump pump system I've ever seen. The pump runs strongly and efficiently on battery or on AC power during a main pump failure. It can switch between maintenance-free AGM battery or flooded standby battery. Run time is long. For heavy loads or long outages, it can charge and use two batteries at once. It can charge the battery while running the pump during a main pump failure. It routinely tests itself and reports the results. It supports a WiFi module that alerts the user to power and backup system conditions. The WiFi module can connect daisy-chained water alarms. The pump and the dual-sensor float switch can be unplugged from the controller for easier sump access and sump maintenance. Durability and reliability are top notch, as this product is built like a tank. I've used Basement Watchdog Big Dogs for decades, and this current version is the best. This is the system that I've installed in all my sumps and for family members and friends.

### ⭐⭐⭐⭐⭐ Works great, quality parts
*by E***K on April 10, 2024*

Works great comes with everything you need to install it except the battery. Installed in a basement. Tested by filling up the sump with water. This is installed as a secondary pump. Primary pump was unplugged during testing (to simulate power outage) unit turned on with no issue and will work great during a power outage. Has good output. Would recommend to anyone that needs a battery back up sump pump solution. sorry for the noisy video. The pump is rather quiet, but the water filling the sump cause most of the noise in the video.

### ⭐⭐⭐⭐⭐ High flow pump, better than the Zoeller 508 it replaced
*by J***L on March 8, 2025*

Already better than the Zoeller Aquanot 508 it replaced. I really like the dual switch setup so it has a backup. It flows much more water than the Zoeller. The system is quiet, and my initial impression is that it is better build quality than the Zoeller battery backup sump. The warranty is certainly better. Time will tell if it lasts, but a Zoeller 508 pump quit within 3 years, and the switch went out at 5. I also found an issue with the pump when I removed the replacement pump on the Zoeller at 2 years old when I replaced the system with the basement watchdog.

## Frequently Bought Together

- THE BASEMENT WATCHDOG Model BWD12-120 Big Dog CONNECT 3,500 GPH at 0 ft. and 2,200 GPH at 10 ft. Battery Backup Sump Pump System with Smart WiFi-Capable Monitoring Controller and 20-Amp Charger
- THE BASEMENT WATCHDOG Model BW-27AGM Maintenance Free (AGM) Sump Pump Battery

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-12*