---
product_id: 634881897
title: "DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040"
brand: "hxjnldc"
price: "A$35"
currency: AUD
in_stock: true
reviews_count: 5
category: "Hxjnldc"
url: https://www.desertcart.com.au/products/634881897-dc-3-7v-800mah-603040-rechargeable-lithium-ion-battery-marshall
store_origin: AU
region: Australia
---

# 3.7V nominal voltage with 4.2V max charge 800mAh high-capacity power Advanced overcharge & short circuit protection DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040

**Brand:** hxjnldc
**Price:** A$35
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your sound, protect your vibe.

## Quick Answers

- **What is this?** DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040 by hxjnldc
- **How much does it cost?** A$35 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/634881897-dc-3-7v-800mah-603040-rechargeable-lithium-ion-battery-marshall)

## 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

- • **Smart Safety Tech:** Built-in Japanese Seiko IC safeguards against overcharge, overcurrent, and short circuits.
- • **DIY Friendly Wiring:** 3-wire silicone cable with clear polarity for easy soldering and hassle-free replacement.
- • **Compact & Lightweight:** Slim 41×30×6mm design weighing just 13.7g—power without the bulk.
- • **Robust 800mAh Capacity:** Extended playback time to keep your beats alive longer than ever.
- • **Seamless Marshall Compatibility:** Perfectly engineered for Major II, III & IV headphones—plug & play power upgrade.

## Overview

This DC 3.7V 800mAh 603040 rechargeable lithium-ion battery is a tailor-made replacement for Marshall MID Major II, III, and IV Bluetooth headphones. Featuring a compact 41×30×6mm form factor and weighing only 13.7g, it delivers reliable 3.7V nominal voltage with a max charge of 4.2V. Equipped with a Japanese Seiko IC, it ensures advanced protection against overcharge, overcurrent, and short circuits. The 3-wire high-temp silicone cable design supports easy DIY installation, making it the go-to power upgrade for audiophiles seeking extended battery life and safety.

## Description

Buy HXJNLDC DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040 online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: J'ai remplacé la batterie de mon casque Marshall Major 4 avec car la durée de la batterie commençait à s'affaiblir, pour l'installer il suffisait juste de couper un petit bout du fil de l'ancienne batterie avec le connecteur et de souder les fils de la nouvelle batterie à ce dernier, puis de relipser le connecteur à la carte du casque.
Review: acoplado perfectamente a unos auriculares marshall, previo empalme.

## Features

- Compatible with Marshall MID Major II Major III Major IV Bluetooth Headphones Battery Replacement VDL603040 SR603040。Also suitable for DIY electronic products with 3.7-5V and less than 2.96Wh 800mAh built-in 3-wire battery replacement.（★ 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 "-"，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.
- 603040 rechargeable lithium ion polymer battery, nominal voltage 3.7V, full charge voltage 4.2V, capacity 800mAh, power 2.96Wh, ★size 41×30×6mm(1.594×1.181×0.236inch）(L*W*T), Weight:13.7g(0.487oz)，Maximum current:0.8A。 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, ★3 wire 3302-26 high temperature resistant silicone cable 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 | B0C3HHVQ9R |
| Best Sellers Rank | #72,214 in Electronics ( See Top 100 in Electronics ) #570 in Rechargeable Household Batteries |
| Country of origin | China |
| Manufacturer | HXJN |
| Product Dimensions | 4.1 x 3 x 0.6 cm; 13 g |

## Product Details

- **Battery capacity:** 800 Milliamp Hours
- **Battery cell composition:** Polymer
- **Brand:** HXJNLDC
- **Number of batteries:** 1 Lithium Polymer batteries required. (included)
- **Recommended uses for product:** Protection

## Images

![DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040 - Image 1](https://m.media-amazon.com/images/I/611umL7ct+L.jpg)
![DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040 - Image 2](https://m.media-amazon.com/images/I/61ZfRNKRNuL.jpg)
![DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040 - Image 3](https://m.media-amazon.com/images/I/81jSmvePDIL.jpg)
![DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040 - Image 4](https://m.media-amazon.com/images/I/81gkArxdQYL.jpg)
![DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040 - Image 5](https://m.media-amazon.com/images/I/61ZYdXSCF5L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***X on 22 December 2024*

J'ai remplacé la batterie de mon casque Marshall Major 4 avec car la durée de la batterie commençait à s'affaiblir, pour l'installer il suffisait juste de couper un petit bout du fil de l'ancienne batterie avec le connecteur et de souder les fils de la nouvelle batterie à ce dernier, puis de relipser le connecteur à la carte du casque.

### ⭐⭐⭐⭐⭐ Review
*by T***E on 3 February 2025*

acoplado perfectamente a unos auriculares marshall, previo empalme.

### ⭐⭐⭐⭐⭐ Review
*by E***R on 26 October 2025*

repaired my headphone in 20 minutes, all was included to make the process easy

## Frequently Bought Together

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-23*