---
product_id: 151111531
title: "300-03864-1 1100mAh Backup Battery Compatible for ADT ADI Ademco Lynx WALYNX-RCHB-SC Lynx Touch K5109, L3000, L5000, L5100(1 Pack)"
brand: "geilienergy"
price: "€ 34.47"
currency: EUR
in_stock: true
reviews_count: 11
url: https://www.desertcart.hr/products/151111531-300-03864-1-1100mah-backup-battery-compatible-for-adt-adi
store_origin: HR
region: Croatia
---

# 7.2V Voltage Compact Size 1100mAh Power 300-03864-1 1100mAh Backup Battery Compatible for ADT ADI Ademco Lynx WALYNX-RCHB-SC Lynx Touch K5109, L3000, L5000, L5100(1 Pack)

**Brand:** geilienergy
**Price:** € 34.47
**Availability:** ✅ In Stock

## Summary

> 🔒 Stay Secure, Stay Powered!

## Quick Answers

- **What is this?** 300-03864-1 1100mAh Backup Battery Compatible for ADT ADI Ademco Lynx WALYNX-RCHB-SC Lynx Touch K5109, L3000, L5000, L5100(1 Pack) by geilienergy
- **How much does it cost?** € 34.47 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/151111531-300-03864-1-1100mah-backup-battery-compatible-for-adt-adi)

## Best For

- geilienergy enthusiasts

## Why This Product

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

## Key Features

- • **Compact Design:** Fits perfectly in tight spaces without compromising performance.
- • **Easy Installation:** Plug-and-play design for hassle-free setup.
- • **Reliable Backup Power:** Ensure your security system never goes offline.
- • **Eco-Friendly Technology:** Made with nickel-metal hydride for sustainable energy.
- • **Versatile Compatibility:** Works seamlessly with multiple Lynx alarm models.

## Overview

The GEILIENERGY 300-03864-1 is a high-performance 1100mAh backup battery designed for compatibility with various ADT and Honeywell Lynx alarm systems. With a compact size of 84.65 x 51.42 x 14.50mm and a reliable 7.2V output, this battery ensures your security system remains operational during power outages. Its eco-friendly nickel-metal hydride construction makes it a sustainable choice for modern security needs.

## Description

GEILIENERGY 300-03864-1 1100mAh Backup Battery Compatible for ADT ADI Ademco Lynx WALYNX-RCHB-SC Lynx Touch K5109, L3000, L5000, L5100(1 Pack)

## Features

- 7.2 Volt 1100 mAh battery back up for the Lynx Plus Panel and GSM module for backup power with a 2 pin connector,not 3 prong connector
- made up of (6) 1100mAh*6 nickel-metal hydride batteries
- Dimension: 84.65 x 51.42 x 14.50mm
- Compatible with the following alarms: WALYNX-RCHB-SC, WALYNX-RCHB-HC , LYNX, C8-B33, MS104, WALYNXRCHB, WALYNX-RCHB-SC, K5109, 781410403291, 55026089, LYNXRCHKIT-SC
- Compatible with the following LYNX alarms: LYNXR-I, LYNXR-2, L3000 LYNX Plus, L5000/5100 LYNX Touch

## Images

![300-03864-1 1100mAh Backup Battery Compatible for ADT ADI Ademco Lynx WALYNX-RCHB-SC Lynx Touch K5109, L3000, L5000, L5100(1 Pack) - Image 1](https://m.media-amazon.com/images/I/51VMwrOvFNL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Exact replacement for security center
  

*by M***H on Reviewed in the United States on November 22, 2023*

Everything working. Easy to order snd shipped quickly.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Easy Installation
  

*by R***J on Reviewed in the United States on February 2, 2024*

No problem installing. Make sure you check wire length. This one was a little short but I made it work.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    good replacement
  

*by J***N on Reviewed in the United States on September 8, 2020*

product arrived as described and in time frame expected. It's a back up battery for an alarm system. It tested fine and seems to have charged within a reasonable amount of time after installation. All appears to be fine with this purchase. We wont know until the power goes out and is down for 24 hours if the claims made by the seller are true, but based upon what I have seen so far, I suspect that they are legit.

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**Shop now:** [https://www.desertcart.hr/products/151111531-300-03864-1-1100mah-backup-battery-compatible-for-adt-adi](https://www.desertcart.hr/products/151111531-300-03864-1-1100mah-backup-battery-compatible-for-adt-adi)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-12*