---
product_id: 535106967
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: "VT10029"
currency: VUV
in_stock: true
reviews_count: 6
category: "Hxjnldc"
url: https://www.desertcart.vu/products/535106967-dc-3-7v-800mah-603040-rechargeable-lithium-ion-battery-marshall
store_origin: VU
region: Vanuatu
---

# 3.7V nominal voltage, 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:** VT10029
**Availability:** ✅ In Stock

## Summary

> 🔋 Upgrade your Marshall’s heartbeat — never miss a beat!

## 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?** VT10029 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/535106967-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

- • **Lightweight & Compact:** At just 13.7g, it keeps your headphones sleek without adding bulk.
- • **Safe & Smart Charging:** Built-in Japanese Seiko IC protects against overcharge, overcurrent, and short circuits.
- • **Power Your Sound All Day:** 800mAh capacity ensures extended playback for your Marshall headphones.
- • **Precision Fit for Marshall Majors:** Custom-sized 41×30×6mm battery designed specifically for Major II, III & IV models.
- • **DIY Friendly with Pro-Grade Wiring:** High-temp silicone cables and clear polarity guide make replacement seamless and secure.

## Overview

This DC 3.7V 800mAh rechargeable lithium-ion battery is engineered for Marshall MID Major II, III, and IV Bluetooth headphones, delivering reliable power with advanced safety features. Compact and lightweight, it offers a perfect replacement solution with easy DIY installation, ensuring your premium audio gear stays charged and ready to perform.

## Description

Shop DC 3.7V 800mAh 603040 Rechargeable Lithium-ion Battery for Marshall MID Major II Major III Major IV Bluetooth Headphones VDL603040 SR603040. Free delivery and returns on eligible orders.

Review: Works great - Does what it says on the tin. I now have my car camera back.
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.

## 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 | 33,237 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 698 in Rechargeable Household Batteries |
| Guaranteed software updates until | unknown |
| Manufacturer | HXJN |
| Product Dimensions | 4.1 x 3 x 0.6 cm; 13 g |

## Product Details

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

## 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)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great
*by M***S on 26 September 2024*

Does what it says on the tin. I now have my car camera back.

### ⭐⭐⭐⭐⭐ 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.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.vu/products/535106967-dc-3-7v-800mah-603040-rechargeable-lithium-ion-battery-marshall](https://www.desertcart.vu/products/535106967-dc-3-7v-800mah-603040-rechargeable-lithium-ion-battery-marshall)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-27*