---
product_id: 548578803
title: "500mAh/3.85V Replacement Battery for WF-1000XM4 Charging Case LP702428"
brand: "flujoy"
price: "€ 31.54"
currency: EUR
in_stock: true
reviews_count: 4
url: https://www.desertcart.sk/products/548578803-500mah-3-85v-replacement-battery-for-wf-1000xm4-charging-case
store_origin: SK
region: Slovakia
---

# 3.85V stable voltage output Compact 29.8x23.1x7.0mm size 500mAh high-capacity power 500mAh/3.85V Replacement Battery for WF-1000XM4 Charging Case LP702428

**Brand:** flujoy
**Price:** € 31.54
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your premium sound experience—never miss a beat!

## Quick Answers

- **What is this?** 500mAh/3.85V Replacement Battery for WF-1000XM4 Charging Case LP702428 by flujoy
- **How much does it cost?** € 31.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/548578803-500mah-3-85v-replacement-battery-for-wf-1000xm4-charging-case)

## Best For

- flujoy enthusiasts

## Why This Product

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

## Key Features

- • **Power Up Your Day:** Reliable 500mAh Li-Polymer battery keeps your WF-1000XM4 charging case energized for longer listening sessions.
- • **Risk-Free Upgrade:** Enjoy peace of mind with a 60-day no-questions-asked refund or free replacement policy—because your sound matters.
- • **Lightweight & Rechargeable:** At just 9 grams, this rechargeable battery adds power without the bulk—perfect for on-the-go professionals.
- • **Precision Fit, Zero Hassle:** Custom-designed dimensions ensure seamless compatibility with your WF-1000XM4 charging case—no bulky replacements here.
- • **Certified Quality Assurance:** ISO9001, RoHS, CE, UN38.3, and MSDS certifications guarantee safety and performance you can trust.

## Overview

This 500mAh, 3.85V Li-Polymer replacement battery (model LP702428) is engineered specifically for the WF-1000XM4 charging case. Compact and lightweight, it delivers reliable power with full safety certifications and a customer-friendly 60-day refund or replacement guarantee.

## Description

- Compatible Brand: - Compatible Models: WF-1000XM4 Charging Case - Part Number: LP702428

## Features

- Compatible Device Models: WF-1000XM4 Charging Case
- Compatible Part Number: LP702428
- Battery Specifications:Capacity: 500mAh, WH: 1.93Wh, Type: Li-Polymer, Voltage: 3.85V
- Battery Dimensions: 29.8 x 23.1 x 7.0mm
- 60 Days No Reason for a Full Refund or a Free Replacement.Certificated with ISO9001, RoHS, CE, UN38.3, MSDS

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Antenna Location | Wireless Headset |
| Asin | B09RMV47C3 |
| Battery Capacity | 500 Milliamp Hours |
| Battery Cell Type | Lithium Polymer |
| Battery Weight | 9 Grams |
| Best Sellers Rank | #2,632 in Camera Batteries |
| Brand | Flujoy |
| Customer Reviews | 3.9 3.9 out of 5 stars (10) 3.9 out of 5 stars |
| Item Dimensions | 1.17 x 0.91 x 0.28 inches |
| Manufacturer | Flujoy |
| Model Name | LP702428 |
| Model Number | CS-SWH104SL |
| Number Of Batteries | 1 Lithium Polymer batteries required. (included) |
| Reusability | Rechargeable |
| Voltage | 3.85 Volts |

## Product Details

- **Battery Capacity:** 500 Milliamp Hours
- **Battery Cell Composition:** Lithium Polymer
- **Brand:** Flujoy
- **Number of Batteries:** 1 Lithium Polymer batteries required. (included)
- **Recommended Uses For Product:** Wireless Headset

## Images

![500mAh/3.85V Replacement Battery for WF-1000XM4 Charging Case LP702428 - Image 1](https://m.media-amazon.com/images/I/71lbhHbw-jL.jpg)
![500mAh/3.85V Replacement Battery for WF-1000XM4 Charging Case LP702428 - Image 2](https://m.media-amazon.com/images/I/71sYhlmQvJL.jpg)
![500mAh/3.85V Replacement Battery for WF-1000XM4 Charging Case LP702428 - Image 3](https://m.media-amazon.com/images/I/71ok+t9FnqL.jpg)
![500mAh/3.85V Replacement Battery for WF-1000XM4 Charging Case LP702428 - Image 4](https://m.media-amazon.com/images/I/51-E2Ezi1qL.jpg)
![500mAh/3.85V Replacement Battery for WF-1000XM4 Charging Case LP702428 - Image 5](https://m.media-amazon.com/images/I/61M3En4qakL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great!
*by  on Reviewed in the United States August 16, 2024*

I had to replace the batteries of my XM4 buds due to the Sony update bug that bricked then and decided to change the battery in the case as well just to have a full fresh start. Unlike the buds changing the case battery wasn't hard at all with a youtube video, patience, and concentration making sure to avoid not rushing and messing up any wires. It's been maybe a month since I swapped the battery and the battery life on my case and buds have been great.

### ⭐⭐⭐⭐⭐ Buen producto
*by  on Reviewed in the United States October 14, 2025*

Funciono perfecto!

### ⭐ Battery doesnt actually work
*by  on Reviewed in the United States January 19, 2025*

Installed easily, but case double-blinks the red indicator light. Battery will not charge.

## Frequently Bought Together

- Flujoy 500mAh/3.85V Replacement Battery for WF-1000XM4 Charging Case LP702428
- EXMUMCMR 𝟮𝟬𝟮𝟓 𝗡𝗲𝘄 𝗨𝗽𝗴𝗿𝗮𝗱𝗲𝘀 𝐙𝟓𝟓𝐇 𝐁𝐚𝐭𝐭𝐞𝐫𝐲,Compatible with Sony Headset Battery for WF-1000XM4(𝟐𝐏𝐂𝐒)+with Installation Tools Kit

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**Shop now:** [https://www.desertcart.sk/products/548578803-500mah-3-85v-replacement-battery-for-wf-1000xm4-charging-case](https://www.desertcart.sk/products/548578803-500mah-3-85v-replacement-battery-for-wf-1000xm4-charging-case)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-07-27*