---
product_id: 679061644
title: "2X Pack Z55H 3.85V 70mAh Battery Replacement for Sony WF1000XM4 WF-1000XM4 Industry Leading Noise Canceling Truly Wireless Earbud Headphones Battery+ Tools"
brand: "exmumcmr"
price: "AR$1044"
currency: ARS
in_stock: false
reviews_count: 5
url: https://www.desertcart.com.ar/products/679061644-2x-pack-z55h-3-85v-70mah-battery-replacement-for-sony
store_origin: AR
region: Argentina
---

# 70mAh long-lasting capacity 3.85V high-voltage power Includes precision installation tools 2X Pack Z55H 3.85V 70mAh Battery Replacement for Sony WF1000XM4 WF-1000XM4 Industry Leading Noise Canceling Truly Wireless Earbud Headphones Battery+ Tools

**Brand:** exmumcmr
**Price:** AR$1044
**Availability:** ❌ Out of Stock

## Summary

> 🔋 Power your premium sound, stay unplugged longer!

## Quick Answers

- **What is this?** 2X Pack Z55H 3.85V 70mAh Battery Replacement for Sony WF1000XM4 WF-1000XM4 Industry Leading Noise Canceling Truly Wireless Earbud Headphones Battery+ Tools by exmumcmr
- **How much does it cost?** AR$1044 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/679061644-2x-pack-z55h-3-85v-70mah-battery-replacement-for-sony)

## Best For

- exmumcmr enthusiasts

## Why This Product

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

## Key Features

- • **Double the Backup:** 2-pack bundle means you’re never caught off guard with dead earbuds again.
- • **Power Up Like a Pro:** 3.85V voltage ensures peak performance for your Sony WF-1000XM4 earbuds.
- • **Plug & Play Precision:** Comes with specialized tools for a seamless, professional-grade battery swap.
- • **Peace of Mind Warranty:** Enjoy 12 months warranty plus 60-day refund and 24/7 support—stress-free upgrade.
- • **Endurance That Outlasts:** 70mAh capacity delivers extended listening sessions—beat the original battery life.

## Overview

This 2-pack Z55H replacement battery set offers 3.85V and 70mAh capacity, perfectly compatible with Sony WF-1000XM4 earbuds. Each battery is brand new, rechargeable, and includes installation tools for a hassle-free swap. Backed by a 12-month warranty and 24/7 support, it’s the smart upgrade for professionals who demand uninterrupted, industry-leading noise-canceling audio.

## Description

Specification: Item: Z55H Battery  Voltage: 3.85V Capacity:70mAh  Condition: 100% New from Manufacturer,  Compatible Part Numbers: Z55H CP1254 Compatible with Models: for Sony WF1000XM4 WF-SP900 Bluetooth Headset Includes:2PCSX batteries.+ tools

Review: I can attest that these are good enough for replacing a dying battery in your earbuds, they're a matched fit replacement. I use mine daily at work and after a year and a half of regular use they are no longer charging fully or lasting even 6 hours. But that's from charged to nearly dead... 5 days a week, for a year and a half. So they absolutly work, even if not as good as the original battery life. The tools are meh, get yourself a good razor blade or exacto knife, a thin strip of plastic (like from packaging) and patience, sliding it around the seam to break the adhesive on the buds and pop them apart, using the tweezers to lift and disconnect the ribbon cable from the two halves and be careful and patent pulling the old batteries out. The included adhesive is a joke. I've replaced both my own and my girlfriends earbuds and BOTH had the earbuds falling apart again with short term use. Pickup some super glue and apply just a TINY bit in a couple spots along the seam, spread it with a piece of plastic then push the halves together and use a piece of tape to HOLD them together for a few minutes while the glue cures. (Just make sure you connected that ribbon cable and checked to make sure the earbuds Work properly before you glue them together, and if you can, use a tiny bit of isopropyl and a tissue to clean the seam as earwax and grease will prevent the glue from bonding. Just don't spill or wipe the electronics inside with it or it will short out and kill the earbud! (best to clean it when old battery is removed before installing new battery) Overall, they're a good and cost effective way to prolong the life of your slightly dated but still very good quality earbuds to be able to keep using them longer, instead of needing to fork out a large sum of money for a replacement pair. I give them a 5 out of 5 even though they're fading a year and a half later because the original batteries only lasted 2 ish years before they started fading too with how regularly and often I use my earbuds. Just take your time doing this replacement, in a well lit area and if you got it, use a magnifying glass!
Review: Las súper recomiendo. Duran más que las originales, por mucho. Es complicado instalarlas, pero eso no es culpa del producto, sino de los audífonos.

## Features

- 100% Compatible with original battery.
- Battery Voltage:3.85V Battery Capacity:70mAh， For battery part number:Z55H CP1254
- Actual measured dimensions (mm): D5.5 x W12
- Compatible for WF-1000XM4 WF1000XM4
- Warranty :Rest assured with 60 days Refund and 12 months Warranty;24 x 7 email support.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C62L2FTV |
| Guaranteed software updates until | unknown |
| Item model number | Z55H |
| Manufacturer | FENGMAI LIMITED |

## Product Details

- **Battery capacity:** 750 Milliamp Hours
- **Battery cell composition:** Lithium Ion
- **Brand:** EXMUMCMR
- **Number of batteries:** 1 Lithium Ion batteries required. (included)
- **Unit count:** 2.0 count

## Images

![2X Pack Z55H 3.85V 70mAh Battery Replacement for Sony WF1000XM4 WF-1000XM4 Industry Leading Noise Canceling Truly Wireless Earbud Headphones Battery+ Tools - Image 1](https://m.media-amazon.com/images/I/71ngp8LSsXL.jpg)
![2X Pack Z55H 3.85V 70mAh Battery Replacement for Sony WF1000XM4 WF-1000XM4 Industry Leading Noise Canceling Truly Wireless Earbud Headphones Battery+ Tools - Image 2](https://m.media-amazon.com/images/I/616nZzYy2+L.jpg)
![2X Pack Z55H 3.85V 70mAh Battery Replacement for Sony WF1000XM4 WF-1000XM4 Industry Leading Noise Canceling Truly Wireless Earbud Headphones Battery+ Tools - Image 3](https://m.media-amazon.com/images/I/61vSUSYvSzL.jpg)
![2X Pack Z55H 3.85V 70mAh Battery Replacement for Sony WF1000XM4 WF-1000XM4 Industry Leading Noise Canceling Truly Wireless Earbud Headphones Battery+ Tools - Image 4](https://m.media-amazon.com/images/I/71XcalcSaNL.jpg)
![2X Pack Z55H 3.85V 70mAh Battery Replacement for Sony WF1000XM4 WF-1000XM4 Industry Leading Noise Canceling Truly Wireless Earbud Headphones Battery+ Tools - Image 5](https://m.media-amazon.com/images/I/61dKogxHoRL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by I***U on 16 October 2025*

I can attest that these are good enough for replacing a dying battery in your earbuds, they're a matched fit replacement. I use mine daily at work and after a year and a half of regular use they are no longer charging fully or lasting even 6 hours. But that's from charged to nearly dead... 5 days a week, for a year and a half. So they absolutly work, even if not as good as the original battery life. The tools are meh, get yourself a good razor blade or exacto knife, a thin strip of plastic (like from packaging) and patience, sliding it around the seam to break the adhesive on the buds and pop them apart, using the tweezers to lift and disconnect the ribbon cable from the two halves and be careful and patent pulling the old batteries out. The included adhesive is a joke. I've replaced both my own and my girlfriends earbuds and BOTH had the earbuds falling apart again with short term use. Pickup some super glue and apply just a TINY bit in a couple spots along the seam, spread it with a piece of plastic then push the halves together and use a piece of tape to HOLD them together for a few minutes while the glue cures. (Just make sure you connected that ribbon cable and checked to make sure the earbuds Work properly before you glue them together, and if you can, use a tiny bit of isopropyl and a tissue to clean the seam as earwax and grease will prevent the glue from bonding. Just don't spill or wipe the electronics inside with it or it will short out and kill the earbud! (best to clean it when old battery is removed before installing new battery) Overall, they're a good and cost effective way to prolong the life of your slightly dated but still very good quality earbuds to be able to keep using them longer, instead of needing to fork out a large sum of money for a replacement pair. I give them a 5 out of 5 even though they're fading a year and a half later because the original batteries only lasted 2 ish years before they started fading too with how regularly and often I use my earbuds. Just take your time doing this replacement, in a well lit area and if you got it, use a magnifying glass!

### ⭐⭐⭐⭐⭐ Review
*by N***S on 13 January 2026*

Las súper recomiendo. Duran más que las originales, por mucho. Es complicado instalarlas, pero eso no es culpa del producto, sino de los audífonos.

### ⭐⭐⭐⭐⭐ Review
*by J***N on 21 July 2025*

Muy buenas baterías, funcionan muy bien ya un año de uso y almacenan la energía de manera correcta.

## Frequently Bought Together

- EXMUMCMR 2X Pack Z55H 3.85V 75mAh Battery Replacement for Sony WF1000XM4 WF-1000XM4 Industry Leading Noise Canceling Truly Wireless Earbud Headphones Battery+ Tools
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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-03-19*