---
product_id: 671164761
title: "Casil CA-1240 12V 4AH Alarm System Battery Back Up Vista 20P ADT"
brand: "casil"
price: "¥1927"
currency: JPY
in_stock: false
url: https://www.desertcart.jp/products/671164761-casil-ca-1240-12v-4ah-alarm-system-battery-back-up
store_origin: JP
region: Japan
---

# Sealed Lead Acid Rechargeable 12V 4AH High-Capacity Power F1 Terminal Compatibility Casil CA-1240 12V 4AH Alarm System Battery Back Up Vista 20P ADT

**Brand:** casil
**Price:** ¥1927
**Availability:** ❌ Out of 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?** ¥1927 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/671164761-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

- • **Reliable Power Backup:** Keep your security system live with 12V 4AH high-capacity battery backup.
- • **Peace of Mind Warranty:** Backed by a 1-year prorated warranty for trusted performance.
- • **Plug & Play Convenience:** F1 terminal ensures quick, secure installation without downtime.
- • **Universal Compatibility:** Seamlessly fits Honeywell, DSC, GE, ADT, and more for hassle-free replacement.
- • **Compact & Durable Design:** Space-saving 3.54" x 2.76" x 4.02" sealed lead acid battery built to last.

## Overview

The Casil CA-1240 is a 12V 4AH sealed lead acid rechargeable battery designed as a direct replacement for major alarm system brands including Honeywell, DSC, GE, and ADT. Its compact size and F1 terminal compatibility make installation effortless, while the 1-year prorated warranty guarantees reliable backup power for your security needs.

## Description

Casil CA-1240 12V 4AH Alarm System Battery Back Up Vista 20P ADT

## Features

- Casil CA-1240 12 Volt 4 Amp Sealed Lead Acid Hi-Capacity Rechargeable Battery
- Length: 3.54" (90 mm) Width: 2.76" (70 mm) Height: 4.02" (102 mm) - F1 Terminal
- Compatible with Honeywell, DSC, GE, ADT, Monitronics, Brinks, First Alert
- Perfect replacement for EXP1240, UPG UB1240, MightyMax ML4-12, Power-Sonic PS-1240, Power King PK1240 and many more!
- 1 Year Prorated Warranty

## 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

- **Number of batteries:** 1 12V batteries required. (included)
- **Brand:** Casil
- **Battery cell composition:** Lead Acid
- **Battery capacity:** 4
- **Recommended uses for product:** Alarm, Emergency Lighting, Firefighting Equipment

## 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)
![Casil CA-1240 12V 4AH Alarm System Battery Back Up Vista 20P ADT - Image 2](https://m.media-amazon.com/images/I/71kyYTaVMyL.jpg)
![Casil CA-1240 12V 4AH Alarm System Battery Back Up Vista 20P ADT - Image 3](https://m.media-amazon.com/images/I/716ObmXH3DL.jpg)
![Casil CA-1240 12V 4AH Alarm System Battery Back Up Vista 20P ADT - Image 4](https://m.media-amazon.com/images/I/8138yy7L0EL.jpg)
![Casil CA-1240 12V 4AH Alarm System Battery Back Up Vista 20P ADT - Image 5](https://m.media-amazon.com/images/I/81U0FufkQkL.jpg)

## Available Options

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

## 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.jp/products/671164761-casil-ca-1240-12v-4ah-alarm-system-battery-back-up](https://www.desertcart.jp/products/671164761-casil-ca-1240-12v-4ah-alarm-system-battery-back-up)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-28*