---
product_id: 26728791
title: "Casil CA-1240 12V 4AH Alarm System Battery Back Up Vista 20P ADT"
brand: "casil"
price: "306 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Casil"
url: https://www.desertcart.ro/products/26728791-casil-ca-1240-12v-4ah-alarm-system-battery-back-up
store_origin: RO
region: Romania
---

# 4AH high capacity Compact 3.54x2.76x4.02 in 12V reliable power Casil CA-1240 12V 4AH Alarm System Battery Back Up Vista 20P ADT

**Brand:** casil
**Price:** 306 Lei
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your peace of mind — never miss a beat in security!

## 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?** 306 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/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

- • **Power That Lasts:** 4AH capacity ensures your security system stays vigilant longer without fail.
- • **Trusted Durability:** Premium lead acid build with 1-year prorated warranty for peace of mind.
- • **Compact & Convenient:** Slim 3.54" x 2.76" x 4.02" design fits perfectly in tight spaces.
- • **Unmatched Compatibility:** Fits seamlessly with ADT, Honeywell, DSC & more for effortless upgrades.
- • **Plug & Play Installation:** F1 terminal connectors guarantee a hassle-free, perfect fit replacement.

## Overview

The Casil CA-1240 is a premium 12V 4AH lead acid alarm system battery designed for reliable, long-lasting backup power. Compatible with major security brands like ADT and Honeywell, it features a compact form factor and easy F1 terminal installation. Backed by a 1-year prorated warranty, it ensures your home security system remains powered and protected.

## 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 |
| Batteries | 1 12V batteries required. (included) |
| Best Sellers Rank | #17,948 in Health & Household ( See Top 100 in Health & Household ) #18 in 12V Batteries |
| Brand | Casil |
| Customer Reviews | 4.8 4.8 out of 5 stars (530) |
| Date First Available | March 24, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.54 pounds |
| Item model number | CA1240 |
| Manufacturer | Chee Yuen Industrial Co., Ltd |
| Manufacturer Part Number | CA1240 |
| Model | CA1240 |
| Product Dimensions | 2.76 x 3.54 x 3.98 inches |
| Voltage | 12 Volts |

## 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)

## 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

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

---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-28*