---
product_id: 26728791
title: "Casil CA-1240 12V 4AH Alarm System Battery Back Up Vista 20P ADT"
brand: "casil"
price: "206.15 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "Casil"
url: https://www.desertcart.tn/products/26728791-casil-ca-1240-12v-4ah-alarm-system-battery-back-up
store_origin: TN
region: Tunisia
---

# 4Ah long-lasting capacity 12V reliable power F1 terminal easy install Casil CA-1240 12V 4AH Alarm System Battery Back Up Vista 20P ADT

**Brand:** casil
**Price:** 206.15 DT
**Availability:** ✅ In Stock

## Summary

> 🔋 Stay powered, stay protected — never miss a beat with Casil CA-1240!

## Quick Answers

- **What is this?** Casil CA-1240 12V 4AH Alarm System Battery Back Up Vista 20P ADT by casil
- **How much does it cost?** 206.15 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/26728791-casil-ca-1240-12v-4ah-alarm-system-battery-back-up)

## Best For

- casil enthusiasts

## Why This Product

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

## Key Features

- • **Compact Yet Mighty:** Slim 3.54 x 2.76 x 4.02 inch design fits most alarm panels without bulk.
- • **Plug & Play Compatibility:** F1 terminal fits seamlessly with ADT, Honeywell, DSC, and more—no hassle installation.
- • **Built to Last, Backed by Warranty:** Premium build quality with a 1-year prorated warranty for ultimate reliability.
- • **Extended Runtime for Peace of Mind:** 4Ah capacity delivers long-lasting backup during power outages.
- • **Power Your Security with Confidence:** 12V lead acid battery ensures steady, uninterrupted alarm system performance.

## Overview

The Casil CA-1240 is a 12V 4Ah lead acid alarm system battery designed for reliable backup power in home and commercial security systems. Compatible with major brands like ADT, Honeywell, and DSC, it features an easy-to-install F1 terminal and compact dimensions. With a 1-year prorated warranty and a strong 4Ah capacity, it ensures your alarm system stays operational during outages, providing peace of mind and security continuity.

## Description

Buy Casil CA-1240 12V 4AH Alarm System Battery Back Up Vista 20P ADT: 12V - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Alarm battery replacement - The battery arrived on time and works as expected. The quality of the battery is good and the installation was easy.
Review: Correct connectors - This is a replacement for our ADT battery and the connectors fit perfectly. No real installation required. Works Perfect!

## Features

- CA1240 12v 4ah alarm battery: the ca1240 12v 4ah alarm battery is a high-quality lead acid alarm battery designed for numerous home and security alarm systems.
- Casil ca1240 12v 4ah alarm battery: the casil ca1240 12v 4ah alarm battery is a premium product, offering an extended lifespan and ultimate reliability. providing 1 year prorated warranty.
- Security system battery replacement: upgrade your security system with our 12v 4ah alarm battery. length: 3.54" (90 mm) width: 2.76" (70 mm) height: 4.02" (102 mm) - f1 terminal
- Alarm battery: compatible with honeywell, dsc, ge, adt, monitronics, brinks, first alert, exp1240, upg ub1240, mightymax ml4-12, power-sonic ps-1240, power king pk1240 and many more!
- Lead acid alarm battery: our ca1240 12v 4ah alarm battery is a lead acid alarm battery, providing strong and consistent power supply for your home alarm battery needs.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01292NUJ4 |
| Amperage | 4 Amps |
| Antenna Location | Alarm Panel |
| Battery Capacity | 4 Amp Hours |
| Battery Cell Type | Lead Acid |
| Battery Weight | 3.08 Pounds |
| Best Sellers Rank | #21,082 in Health & Household ( See Top 100 in Health & Household ) #28 in 12V Batteries |
| Brand | Casil |
| Built-In Media | battery |
| Compatible Phone Models | Alarm System |
| Customer Reviews | 4.7 4.7 out of 5 stars (535) |
| Item Dimensions | 2.76 x 3.54 x 3.98 inches |
| Item Type Name | lead_acid_battery |
| Item Weight | 1.54 Pounds |
| Manufacturer | Chee Yuen Industrial Co., Ltd |
| Model Name | CA1240 |
| Model Number | CA1240 |
| Number of Batteries | 1 12V batteries required. (included) |
| Reusability | Rechargeable |
| UPC | 737993545804 737993546238 737993544975 |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
| Warranty Description | 1 year warranty. |

## Product Details

- **Battery Capacity:** 4 Amp Hours
- **Battery Cell Composition:** Lead Acid
- **Brand:** Casil
- **Number of Batteries:** 1 12V batteries required. (included)
- **Recommended Uses For Product:** Alarm Panel

## Images

![Casil CA-1240 12V 4AH Alarm System Battery Back Up Vista 20P ADT - Image 1](https://m.media-amazon.com/images/I/61n+eFLYQAL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Alarm battery replacement
*by L***O on December 11, 2025*

The battery arrived on time and works as expected. The quality of the battery is good and the installation was easy.

### ⭐⭐⭐⭐⭐ Correct connectors
*by J***R on June 1, 2025*

This is a replacement for our ADT battery and the connectors fit perfectly. No real installation required. Works Perfect!

### ⭐⭐⭐⭐⭐ Great Price and Easy to Install
*by T***M on January 1, 2025*

My alarm battery was low and I kept on getting automated phone calls from the alarm company to replace and call to have it replaced. We are all hooked up to the same system in my HOA and my neighbor said don't have them replace it , you can buy it and do it yourself at a fraction of the cost. As a senior, I was hesitant, but it was so easy to replace! Alarm system works great and I saved a load of money! Plus no installation fee because I did it!

## Frequently Bought Together

- Casil CA-1240 12V 4AH Alarm System Battery Back Up Vista 20P ADT
- CASIL 12V 7AH CA1270 First Alert ADT Alarm Battery
- ExpertPower EXP1250 12V 5Ah Home Alarm Battery with F1 Terminals

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.tn/products/26728791-casil-ca-1240-12v-4ah-alarm-system-battery-back-up](https://www.desertcart.tn/products/26728791-casil-ca-1240-12v-4ah-alarm-system-battery-back-up)

---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-05-30*