---
product_id: 636711324
title: "DC 3.85V 550mAh 722428 Rechargeable lithium battery for Sony WH-CH720N、WH-XB910N、INZONE H9 Wireless noise reduction gaming earphones Battery Replacement"
brand: "hxjnldc"
price: "A$50"
currency: AUD
in_stock: true
reviews_count: 5
category: "Hxjnldc"
url: https://www.desertcart.com.au/products/636711324-dc-3-85v-550mah-722428-rechargeable-lithium-battery-for-sony
store_origin: AU
region: Australia
---

# 550mAh capacity for extended use 3.85V nominal voltage Built-in overcharge & short circuit protection DC 3.85V 550mAh 722428 Rechargeable lithium battery for Sony WH-CH720N、WH-XB910N、INZONE H9 Wireless noise reduction gaming earphones Battery Replacement

**Brand:** hxjnldc
**Price:** A$50
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your premium audio experience without compromise!

## Quick Answers

- **What is this?** DC 3.85V 550mAh 722428 Rechargeable lithium battery for Sony WH-CH720N、WH-XB910N、INZONE H9 Wireless noise reduction gaming earphones Battery Replacement by hxjnldc
- **How much does it cost?** A$50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/636711324-dc-3-85v-550mah-722428-rechargeable-lithium-battery-for-sony)

## Best For

- hxjnldc enthusiasts

## Why This Product

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

## Key Features

- • **Precision Power Fit:** Specifically engineered for Sony WH-CH720N, WH-XB910N & INZONE H9 earphones
- • **Advanced Safety Tech:** Japanese Seiko IC safeguards against overcharge, overdischarge, and short circuits
- • **Compact & Lightweight:** Slim 28.5×24×7.2mm size and just 11g for seamless integration
- • **Hassle-Free Replacement:** Easy solder or plug-in with included heat shrink sleeve and 3-wire JST connector
- • **Universal Compatibility:** Works with any 3.85-5V devices under 2.117Wh, beyond just Sony models

## Overview

This DC 3.85V 550mAh rechargeable lithium polymer battery is a tailor-made replacement for Sony WH-CH720N, WH-XB910N, and INZONE H9 wireless noise-cancelling gaming earphones. Featuring a compact design, advanced Japanese Seiko IC protection, and universal compatibility with low-power 3.85-5V devices, it ensures safe, reliable power delivery. Lightweight and easy to install, it’s engineered to keep your audio gear performing at its best.

## Description

Shop DC 3.85V 550mAh 722428 Rechargeable lithium battery for Sony WH-CH720N、WH-XB910N、INZONE H9 Wireless noise reduction gaming earphones Battery Replacement. Free delivery and returns on eligible orders.

Review: Garbage. Says low battery after 3 minutes of use. Charge all day with no improvement.
Review: I bought 2 of them, none is charging, don't waste your time. I give 2 stars only because you can return the item without any issues

## Features

- Compatible with Sony WH-CH720N、WH-XB910N、INZONE H9 Wireless noise reduction gaming earphones Battery Replacement。It can also be used in other 3.85-5V electronic products with power less than 2.117Wh (550mAh).（★ Not applicable to high-power electric tools and model aircraft）
- Please note that the specifications and polarity of the connector are based on the product display image,★the red wire is the positive "+" and the black wire is the negative "-"，yellow wire is thermistor "NTC"，Do not reverse-charge or reverse-connectreverse. ★The primary battery of some products has no plug or mismatched plug or mismatched polarity. It doesn't matter, you can cut and solder the plug directly or use our heat shrinkable insulating sleeve to connect the same color wire.
- 722428 rechargeable lithium ion polymer battery, nominal voltage 3.85V, full charge voltage 4.2V, capacity 550mAh, power 2.117Wh, ★size 28.5×24×7.2mm(1.122×0.945×0.283inch）(L*W*T), Weight:11g(0.39oz)，Maximum current:0.6A。 It can prevent overcharge, overdischarge, overcurrent, and short circuit.
- It‘s consists of of large-capacity A+ lithium battery, Japanese Seiko IC overcharge and overcurrent short circuit protection board, 3302-28 high temperature resistant silicone cable, and genuine JST Pitch 1.0mm ★3 wire connector module.
- If there are any quality issues within a year, ★please feel free to contact us via email for replacement.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CHYTS544 |
| Guaranteed software updates until | unknown |
| Item model number | 402030 |
| Manufacturer | HXJN |
| Product Dimensions | 2.85 x 2.4 x 0.72 cm; 11 g |

## Product Details

- **Battery capacity:** 550 Milliamp Hours
- **Battery cell composition:** Lithium Polymer
- **Brand:** HXJNLDC
- **Number of batteries:** 1 C batteries required.
- **Recommended uses for product:** Clock

## Images

![DC 3.85V 550mAh 722428 Rechargeable lithium battery for Sony WH-CH720N、WH-XB910N、INZONE H9 Wireless noise reduction gaming earphones Battery Replacement - Image 1](https://m.media-amazon.com/images/I/61C1X0BYjqL.jpg)

## Customer Reviews

### ⭐ Review
*by E***S on 9 December 2025*

Garbage. Says low battery after 3 minutes of use. Charge all day with no improvement.

### ⭐ Review
*by P***N on 30 December 2025*

I bought 2 of them, none is charging, don't waste your time. I give 2 stars only because you can return the item without any issues

### ⭐ Review
*by N***A on 9 February 2025*

Por qué no carga al 100 solo llega al 35% cuál es problema??? Quiero apolo en el producto pero no puedo comunicarme

## Frequently Bought Together

- HXJNLDC DC 3.85V 550mAh 722428 Rechargeable Lithium Battery for Sony WH-CH720N、WH-XB910N、INZONE H9 Wireless Noise Reduction Gaming Earphones Battery Replacement
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**Shop now:** [https://www.desertcart.com.au/products/636711324-dc-3-85v-550mah-722428-rechargeable-lithium-battery-for-sony](https://www.desertcart.com.au/products/636711324-dc-3-85v-550mah-722428-rechargeable-lithium-battery-for-sony)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-17*