---
title: Fall Sensor Battery Replacement for LGX and SmartLink Medi-Guardian MKII
description: Step-by-step guide to replace the fall sensor battery on INS LifeGuard SmartHome LGX and SmartLink Medi-Guardian MKII devices.
---

[Skip to content](https://help.inslifeguard.com.au/knowledge-base/replacing-your-fall-sensor-battery#main-content)

[![INS LifeGuard Logo - RGB_Horizontal - Full Colour](https://help.inslifeguard.com.au/hs-fs/hubfs/INS%20LifeGuard%20Logo%20-%20RGB_Horizontal%20-%20Full%20Colour.png?width=800&height=154&name=INS%20LifeGuard%20Logo%20-%20RGB_Horizontal%20-%20Full%20Colour.png)](https://www.inslifeguard.com.au/)

Open main navigation

Close main navigation

 Hello, how can we help you?

- There are no suggestions because the search field is empty.

1. [Help Centre](https://help.inslifeguard.com.au/knowledge-base?hsLang=en)
2. [Troubleshooting](https://help.inslifeguard.com.au/knowledge-base/troubleshooting?hsLang=en)

December 17, 2025

# Fall Sensor Battery Replacement for LGX and SmartLink Medi-Guardian MKII

## The process is different depending on whether you have the LifeGuard SmartHome LGX or the SmartLink Medi Guardian.

#### **Low Battery Warning**

If your fall sensor battery is running low, INS LifeGuard may call you and let you know. You can either request a new pendant (postage fee may apply) or replace the battery yourself.

#### **What You’ll Need**

- Your fall sensor pendant
- Philips head or flat head screwdriver (depending on which fall sensor you have)
- The correct battery (can be found via online retailers or battery stores):

|   | LifeGuard SmartHome LGX Fall Sensor requires battery type CR2477 ![Battery--CR2477](https://help.inslifeguard.com.au/hs-fs/hubfs/Knowledge-Base/Transmitters/Battery--CR2477.jpg?width=120&height=115&name=Battery--CR2477.jpg) | SmartLink Medi-Guardian MKII Fall Sensor requires CR2430 ![Button_Battery](https://help.inslifeguard.com.au/hs-fs/hubfs/Knowledge-Base/Transmitters/Button_Battery.jpg?width=120&height=120&name=Button_Battery.jpg) |
| --- | --- | --- |

#### **Battery Replacement - SmartHome LGX Fall Sensor**

> **Battery Type: CR2477**

1. Turn the pendant over to locate the battery door.
2. Use a **Philips head screwdriver** to remove the back panel.
3. Gently remove the old battery and dispose of it safely.
   
   ###### *Never place batteries in household waste or recycling bins; take them to a battery recycling drop-off point.*
4. Insert the new battery with the **positive (+) side facing up**.
5. Replace the back panel and tighten the screw.
6. Press the button to trigger an alarm. When the operator answers, advise that you are testing after replacing the battery in your fall sensor.

#### **Battery Replacement - SmartLink Medi-Guardian MKII Fall Sensor**

> **Battery Type: CR2430**

1. Turn the pendant over to locate the battery door.
2. Using a **flat-head screwdriver**, rotate the cover counter-clockwise until it unlocks, then prise the cover off.
3. Gently remove the old battery and dispose of it safely.
   
   ###### ***Never place batteries in household waste or recycling bins; take them to a battery recycling drop-off point.***
4. Insert the new battery with the **positive (+) side facing up**.
5. Replace the cover and turn it clockwise until it locks into place.
6. Press the button to trigger an alarm. When the operator answers, advise that you are testing after replacing the battery in your fall sensor.

#### **Call if you still need help**

If you need assistance, call our friendly tech support team on 1800 870 410 — we’re here to help.

- [In-Home Alarm Systems](https://help.inslifeguard.com.au/knowledge-base/in-home-alarm-systems?hsLang=en)
- [Mobile Alarm Systems](https://help.inslifeguard.com.au/knowledge-base/mobile-alarm-systems?hsLang=en)
- [Family, Carer and Village Support](https://help.inslifeguard.com.au/knowledge-base/family-carer-and-village-support?hsLang=en)
- [FAQ](https://help.inslifeguard.com.au/knowledge-base/faq?hsLang=en#main-content)
  
  
  
  
  
    - [General Service FAQs](https://help.inslifeguard.com.au/knowledge-base/faq?hsLang=en#general-service-faqs)
    - [SmartHome IP Dialler FAQs](https://help.inslifeguard.com.au/knowledge-base/faq?hsLang=en#smarthome-ip-dialler-faqs)
    - [SmartHome LGX FAQs](https://help.inslifeguard.com.au/knowledge-base/faq?hsLang=en#smarthome-lgx-faqs)
    - [Mobile Alarm FAQs](https://help.inslifeguard.com.au/knowledge-base/faq?hsLang=en#mobile-alarm-faqs)
    - [LifeGuard Managers Portal FAQ](https://help.inslifeguard.com.au/knowledge-base/faq?hsLang=en#lifeguard-managers-portal-faq)
- [Troubleshooting](https://help.inslifeguard.com.au/knowledge-base/troubleshooting?hsLang=en)

[![INS LifeGuard Logo - RGB_Horizontal - Full Colour](https://help.inslifeguard.com.au/hs-fs/hubfs/INS%20LifeGuard%20Logo%20-%20RGB_Horizontal%20-%20Full%20Colour.png?width=156&height=30&name=INS%20LifeGuard%20Logo%20-%20RGB_Horizontal%20-%20Full%20Colour.png "INS LifeGuard Logo - RGB_Horizontal - Full Colour")](https://www.inslifeguard.com.au/)

Help Centre

<https://www.facebook.com/INSLifeGuardAU> <https://www.instagram.com/inslifeguard/> <https://au.linkedin.com/company/ins-lifeguard>

Copyright © 2025, INS LifeGuard