---
product_id: 7856384
title: "THE BASEMENT WATCHDOG Model 30HDC140S Big Standby Sump Pump Battery"
brand: "the basement watchdog"
price: "R$2115"
currency: BRL
in_stock: true
url: https://www.desertcart.com.br/products/7856384-the-basement-watchdog-model-30hdc140s-big-standby-sump-pump-battery
store_origin: BR
region: Brazil
---

# Runs intermittently for days Long-lasting power storage Fluid sensor alarm ready THE BASEMENT WATCHDOG Model 30HDC140S Big Standby Sump Pump Battery

**Brand:** the basement watchdog
**Price:** R$2115
**Availability:** ✅ In Stock

## Summary

> 🔋 Stay dry, stay ahead — the ultimate backup power for your basement!

## Quick Answers

- **What is this?** THE BASEMENT WATCHDOG Model 30HDC140S Big Standby Sump Pump Battery by the basement watchdog
- **How much does it cost?** R$2115 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/7856384-the-basement-watchdog-model-30hdc140s-big-standby-sump-pump-battery)

## 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

- • **Powerhouse Capacity:** Heavy-duty plates store more energy for longer run times than standard models.
- • **Trusted Reliability:** Backed by a 1-year limited warranty for peace of mind in critical moments.
- • **Unmatched Endurance:** Pumps intermittently for days to keep your basement dry and worry-free.
- • **Fresh & Ready Activation:** Ships dry to ensure peak battery freshness until you’re ready to activate.
- • **Smart Safety Integration:** Compatible with fluid sensor alarms to alert you when maintenance is needed.

## Overview

The Basement Watchdog Model 30HDC140S Big Standby Battery is a heavy-duty, lead-acid battery designed to power Basement Watchdog sump pump backup systems. It offers longer run times—pumping intermittently for days—and supports fluid sensor alarms for proactive maintenance alerts. Shipped dry for freshness, it requires separate battery fluid and comes with a 1-year limited warranty, ensuring reliable basement flood protection when you need it most.

## Description

Product Description               The Basement Watchdog Big Standby Battery is compatible with all Basement Watchdog battery backup sump pump systems. It is uniquely constructed with heavy duty plates to store more energy, provide longer run times and last longer in standby operation. The high storage capacity of the Big Standby Battery can run any Basement Watchdog battery backup system intermittently for days.                  From the Manufacturer               The Basement Watchdog 7-1/2-Hour Standby Battery will run the Basement Watchdog A/C-D/C system and the Basement Watchdog Special system up to 7-1/2 hours continuously, and will run the Basement Watchdog Emergency system up to 12 hours continuously. Featuring the ability to pump intermittently for days. This battery is shipped dry. Acid cannot be shipped and must be purchased locally.

## Features

- Pumps intermittently for days to help protect your basement
- Provides longer run times than the Basement Watchdog Emergency Standby Battery (model 24EP6)
- Accommodates the Basement Watchdog fluid sensor to sound an alarm when distilled water is needed
- Shipped without battery fluid to remain fresh until activated
- Can be easily and safely filled with a 6 qt. battery fluid pack (sold separately Model # Z-PACK)
- 1 year limited warranty
- 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 |
|---------------|-------|
| Manufacturer | Glentronics, Inc. |
| Part Number | 30HDC140S |
| Item Weight | 36 pounds |
| Product Dimensions | 6.75 x 13 x 10 inches |
| Item model number | 30HDC140S |
| Batteries | 1 AA batteries required. (included) |
| Is Discontinued By Manufacturer | No |
| Style | Submersible |
| Material | Plastic |
| Power Source | Battery Powered |
| Horsepower | 0.33 Horsepower |
| Item Package Quantity | 1 |
| Included Components | 30HDC140S |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lead Acid |
| Warranty Description | 1 year warranty |

## Images

![THE BASEMENT WATCHDOG Model 30HDC140S Big Standby Sump Pump Battery - Image 1](https://m.media-amazon.com/images/I/814s3C-QxTL.jpg)
![THE BASEMENT WATCHDOG Model 30HDC140S Big Standby Sump Pump Battery - Image 2](https://m.media-amazon.com/images/I/81GflgZkQPL.jpg)

## Questions & Answers

**Q: If i buy a deep cycle marine battery, will it have a slot of the water indicator stick that the pump comes with so it does not alarm.**
A: I have heard you can buy a marine battery and put sensor in a cup of water since it only detects that there is liquid in the battery so that the watchdog does not go dry. Seased marine batteries do not have this issue

**Q: how many quarts of acid does the battery require**
A: 6 quarts which you can buy at major retail stores like Home Depot, ACE Hardware, Lowes etc. Glentronics does sell this exact size. If you have any questions you can contact us at 800.991.0466 ext 3 for tech support

**Q: If I use a deep cycle battery in place of this, is there a way to override the sensor so it doesn't beep?**
A: If you use a maintenance free battery instead of this maintenance battery yes there is a way to bypass the alarm. To do this you will want to connect the sensor to the positive terminal by sandwiching the sensor between the positive wing nut and termina. Please contact us if you are in need of further assistance. You can do so by calling800.991.0466 ext 3 for tech support.

**Q: why does a new battery go dead?**
A: It's possible that the charge consumed by the control unit for 'Power' and 'Water Level' monitoring triggers brief, but frequent, charge cycles. Repeated cycles of partial charging and discharging will increase stratification (layering by specific gravity in this case) of the electrolyte, reducing the capacity and performance of the battery due to the lack of acid on top limits plate activation.Another issue is BWD's policy of releasing products with new control units the same name and part number as their predecessor(s) so it's not clear on their website nor the original manual which battery is best suited to your backup system unless your serial number is 300000 or higher.It's also possible that the wrong electrolyte was used to initiate catalysis in the battery since it is not packaged with BWD. It's up to the consumer to divine the electrolyte with the required specific gravity which wont be shown on any electrolyte's packaging. Assuming the *only* electrolyte on a store's shelves is the right one for the battery they're selling might be problematic for you but it'll probably last the duration of the battery's warranty.There's always the chance of a manufacturing defect which would be covered under warranty. Unfortunately the warranty doesn't include the electrolyte which probably explains why they're not packaged together.

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**Shop now:** [https://www.desertcart.com.br/products/7856384-the-basement-watchdog-model-30hdc140s-big-standby-sump-pump-battery](https://www.desertcart.com.br/products/7856384-the-basement-watchdog-model-30hdc140s-big-standby-sump-pump-battery)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-01-23*