---
product_id: 571856915
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: "₩43625"
currency: KRW
in_stock: true
reviews_count: 9
category: "Hxjnldc"
url: https://www.desertcart.kr/products/571856915-dc-3-85v-550mah-722428-rechargeable-lithium-battery-for-sony
store_origin: KR
region: South Korea
---

# 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:** ₩43625
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your play, protect your gear—never miss a beat!

## 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?** ₩43625 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/571856915-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

- • **DIY Friendly:** Includes heat shrinkable sleeves for easy wire splicing—customize your connection with confidence.
- • **Safety-First Tech:** Japanese Seiko IC safeguards against overcharge, overdischarge, and short circuits—reliable peace of mind.
- • **Compact Powerhouse:** Slim 29×24×7.2mm design packs 2.117Wh energy without bulk—perfect for sleek wireless gear.
- • **Universal Flexibility:** Works with any 3.85-5V device under 2.117Wh—versatile battery solution beyond just headphones.
- • **Precision Compatibility:** Tailored for Sony WH-CH720N, WH-XB910N & INZONE H9 earphones—plug & play power upgrade.

## Overview

This 3.85V 550mAh rechargeable lithium polymer battery is engineered for Sony WH-CH720N, WH-XB910N, and INZONE H9 wireless noise-cancelling gaming earphones. Featuring a compact form factor (29×24×7.2mm) and advanced Japanese Seiko IC protection, it delivers safe, reliable power with overcharge and short circuit safeguards. Ideal for devices under 2.117Wh, it offers a versatile, easy-to-install replacement option to keep your audio experience uninterrupted.

## Description

Buy HXJNLDC DC 3.85V 550mAh 722428 Rechargeable Lithium Battery for Sony WH-CH720N、WH-XB910N、INZONE H9 Wireless Noise Reduction Gaming Earphones Battery Replacement: 3.7V - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Ripoff - Garbage. Says low battery after 3 minutes of use. Charge all day with no improvement.
Review: didn't work for WH-CH720N - got for sony WH-CH720N. had 60% battery out of the box but won't hold a charge. the headphones are cooked.

## 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 compare the connector specifications and polarity according to the display diagram before purchasing,★the red wire is the positive "+" and the black wire is the negative "-",White 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 29×24×7.2mm(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 |
| Batteries | 1 C batteries required. |
| Best Sellers Rank | #427,004 in Health & Household ( See Top 100 in Health & Household ) #1,308 in 3.7V Batteries |
| Customer Reviews | 2.1 2.1 out of 5 stars (16) |
| Date First Available | September 13, 2023 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.388 ounces |
| Item model number | 402030 |
| Manufacturer | HXJN |
| Product Dimensions | 1.12 x 0.94 x 0.28 inches |

## 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:** Indoor/Outdoor

## 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)
![DC 3.85V 550mAh 722428 Rechargeable Lithium Battery for Sony WH-CH720N、WH-XB910N、INZONE H9 Wireless Noise Reduction Gaming Earphones Battery Replacement - Image 2](https://m.media-amazon.com/images/I/71bGdJE0CCL.jpg)
![DC 3.85V 550mAh 722428 Rechargeable Lithium Battery for Sony WH-CH720N、WH-XB910N、INZONE H9 Wireless Noise Reduction Gaming Earphones Battery Replacement - Image 3](https://m.media-amazon.com/images/I/81jSmvePDIL.jpg)
![DC 3.85V 550mAh 722428 Rechargeable Lithium Battery for Sony WH-CH720N、WH-XB910N、INZONE H9 Wireless Noise Reduction Gaming Earphones Battery Replacement - Image 4](https://m.media-amazon.com/images/I/81gkArxdQYL.jpg)
![DC 3.85V 550mAh 722428 Rechargeable Lithium Battery for Sony WH-CH720N、WH-XB910N、INZONE H9 Wireless Noise Reduction Gaming Earphones Battery Replacement - Image 5](https://m.media-amazon.com/images/I/61-09GlWwEL.jpg)

## Customer Reviews

### ⭐ Ripoff
*by E***S on December 9, 2025*

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

### ⭐ didn't work for WH-CH720N
*by N***Y on November 2, 2025*

got for sony WH-CH720N. had 60% battery out of the box but won't hold a charge. the headphones are cooked.

### ⭐⭐ Worked one time
*by T***% on November 22, 2024*

This fits Sony Xb910n . Testing the performance right now will update as I notice. It started with 50% now at 7% Looks like it’s not charging anymore. Will update tomorrow by trying again otherwise I am returning

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- 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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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-06*