---
product_id: 531074934
title: "DC 3.7V 650mAh 602540 Rechargeable Lithium Battery for Sennheiser Momentum 2.0 HD 4.40 HD 4.50 450BT Urbanite XL Wireless Bluetooth Headphones Aerox 9 Aerox 5 Mouse"
brand: "hxjnldc"
price: "R582"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Hxjnldc"
url: https://www.desertcart.co.za/products/531074934-dc-3-7v-650mah-602540-rechargeable-lithium-battery-for-sennheiser
store_origin: ZA
region: South Africa
---

# 3.7V nominal voltage 650mAh high capacity Advanced protection circuit DC 3.7V 650mAh 602540 Rechargeable Lithium Battery for Sennheiser Momentum 2.0 HD 4.40 HD 4.50 450BT Urbanite XL Wireless Bluetooth Headphones Aerox 9 Aerox 5 Mouse

**Brand:** hxjnldc
**Price:** R582
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your passion, stay unplugged longer.

## Quick Answers

- **What is this?** DC 3.7V 650mAh 602540 Rechargeable Lithium Battery for Sennheiser Momentum 2.0 HD 4.40 HD 4.50 450BT Urbanite XL Wireless Bluetooth Headphones Aerox 9 Aerox 5 Mouse by hxjnldc
- **How much does it cost?** R582 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/531074934-dc-3-7v-650mah-602540-rechargeable-lithium-battery-for-sennheiser)

## 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

- • **Safe & Smart Charging:** Built-in Japanese Seiko IC safeguards against overcharge, overdischarge, overcurrent, and short circuits—charge with confidence.
- • **Power Up Your Momentum:** 650mAh capacity delivers up to 30% longer playtime—keep your headphones alive and thriving.
- • **Revive & Sustain Your Gear:** Breathe new life into decade-old devices with a reliable, rechargeable lithium polymer battery backed by a 1-year warranty.
- • **Plug & Play with Flexibility:** Genuine JST 1.25mm 3-wire connector with color-coded wiring for easy, error-free installation or soldering customization.
- • **Precision Fit & Compatibility:** Custom-sized 41×25×6mm battery designed for Sennheiser Momentum 2.0, HD 4.40/4.50, 450BT, Urbanite XL, plus Aerox 9/5 mouse.

## Overview

This HXJNLDC 602540 rechargeable lithium polymer battery offers a robust 650mAh capacity at 3.7V nominal voltage, engineered specifically for Sennheiser Momentum 2.0 series headphones and select Aerox mice. Featuring a compact 41×25×6mm form factor and advanced Japanese Seiko IC protection circuitry, it ensures safe, efficient charging and extended device runtime. With a genuine JST 1.25mm connector and color-coded wiring, installation is straightforward, making it the perfect upgrade to revive your wireless audio and peripherals with confidence.

## Description

Buy HXJNLDC DC 3.7V 650mAh 602540 Rechargeable Lithium Battery for Sennheiser Momentum 2.0 HD 4.40 HD 4.50 450BT Urbanite XL Wireless Bluetooth Headphones Aerox 9 Aerox 5 Mouse: 3.7V - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: First impression is good, works as advertised. - So, i bought the Momentum 3 battery for my Momentum 2 headphones. First off, it is shorter so i put a small piece of foam by it in the tray to hold it in place, secondly it is thicker, doesn't matter. The plug is the same and this battery has 30% greater capacity so I decided to go for it. I bought a correct one a while back but it never worked for charging so I tried again with this one. It indeed charges. Anyway, baring a rapid failure to hold a charge I consider this battery great. It has revived my 10+ year old headphones to working more than a couple hous a charge... I hope I get something comparable to when they were new or better.
Review: Battery works - Battery and control module worked without any issues. Wires are correctly color coded as well.

## Features

- Compatible with Sennheiser Momentum 2.0 HD 4.40 HD 4.50 450BT Urbanite XL Wireless Bluetooth Headphones Aerox 9 Aerox 5 mouse Battery Replacement。It can also be used in other 3.7-5V electronic products with power less than 2.405Wh (650mAh).（★ 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.
- 602540 rechargeable lithium ion polymer battery, nominal voltage 3.7V, full charge voltage 4.2V, capacity 650mAh, power 2.405Wh, ★size 41×25×6mm(1.614×0.984×0.236inch）(L*W*T), Weight:12g(0.423oz)，Maximum current:0.65A。 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, 3302-26 high temperature resistant silicone cable, and genuine JST Pitch 1.25mm ★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 | B0BR3ZQZ6Q |
| Amperage | 0.65 A |
| Antenna Location | Power Tool |
| Battery Capacity | 650 milliamp_hours |
| Battery Cell Composition | Lithium Polymer |
| Battery Cell Type | Lithium Polymer |
| Battery Weight | 12 g |
| Best Sellers Rank | #213,148 in Health & Household ( See Top 100 in Health & Household ) #206 in 3.7V Batteries |
| Brand | HXJNLDC |
| Customer Reviews | 4.3 out of 5 stars 93 Reviews |
| Item Dimensions | 1.61 x 0.98 x 0.24 inches |
| Manufacturer | HXJN |
| Model Name | 602540 |
| Model Number | 602540 |
| Number of Batteries | 1 C batteries required. (included) |
| Recommended Uses For Product | Power Tool |
| Reusability | Rechargeable |
| UPC | 754525114642 |
| Unit Count | 1 Count |
| Voltage | 3.7 volts_of_direct_current |
| Warranty Description | 1 |

## Product Details

- **Battery Capacity:** 650 milliamp_hours
- **Battery Cell Composition:** Lithium Polymer
- **Brand:** HXJNLDC
- **Number of Batteries:** 1 C batteries required. (included)
- **Recommended Uses For Product:** Power Tool

## Images

![DC 3.7V 650mAh 602540 Rechargeable Lithium Battery for Sennheiser Momentum 2.0 HD 4.40 HD 4.50 450BT Urbanite XL Wireless Bluetooth Headphones Aerox 9 Aerox 5 Mouse - Image 1](https://m.media-amazon.com/images/I/61wU2iVP-RL.jpg)
![DC 3.7V 650mAh 602540 Rechargeable Lithium Battery for Sennheiser Momentum 2.0 HD 4.40 HD 4.50 450BT Urbanite XL Wireless Bluetooth Headphones Aerox 9 Aerox 5 Mouse - Image 2](https://m.media-amazon.com/images/I/61eO8UUJ7mL.jpg)
![DC 3.7V 650mAh 602540 Rechargeable Lithium Battery for Sennheiser Momentum 2.0 HD 4.40 HD 4.50 450BT Urbanite XL Wireless Bluetooth Headphones Aerox 9 Aerox 5 Mouse - Image 3](https://m.media-amazon.com/images/I/81jSmvePDIL.jpg)
![DC 3.7V 650mAh 602540 Rechargeable Lithium Battery for Sennheiser Momentum 2.0 HD 4.40 HD 4.50 450BT Urbanite XL Wireless Bluetooth Headphones Aerox 9 Aerox 5 Mouse - Image 4](https://m.media-amazon.com/images/I/81gkArxdQYL.jpg)
![DC 3.7V 650mAh 602540 Rechargeable Lithium Battery for Sennheiser Momentum 2.0 HD 4.40 HD 4.50 450BT Urbanite XL Wireless Bluetooth Headphones Aerox 9 Aerox 5 Mouse - Image 5](https://m.media-amazon.com/images/I/61vGu6wixmL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ First impression is good, works as advertised.
*by R***T on September 14, 2025*

So, i bought the Momentum 3 battery for my Momentum 2 headphones. First off, it is shorter so i put a small piece of foam by it in the tray to hold it in place, secondly it is thicker, doesn't matter. The plug is the same and this battery has 30% greater capacity so I decided to go for it. I bought a correct one a while back but it never worked for charging so I tried again with this one. It indeed charges. Anyway, baring a rapid failure to hold a charge I consider this battery great. It has revived my 10+ year old headphones to working more than a couple hous a charge... I hope I get something comparable to when they were new or better.

### ⭐⭐⭐⭐⭐ Battery works
*by T***C on May 20, 2026*

Battery and control module worked without any issues. Wires are correctly color coded as well.

### ⭐⭐⭐⭐⭐ Epos GSP 370
*by G***H on February 15, 2026*

Got this for my epos gps 370. Connections works but the battery is a little bigger than the OEM but I clipped some plastic out of the way and got it to work for the most part.

## Frequently Bought Together

- HXJNLDC DC 3.7V 650mAh AHB622540N01 Rechargeable Lithium Battery for Sennheiser Momentum 2.0 HD 4.40 HD 4.50 450BT Urbanite XL Wireless Bluetooth Headphones Aerox 9 Aerox 5 Mouse
- Replacement Ear Pads for Sennheiser Momentum 2.0 (Momentum 2, M2), HD1 Around-Ear Headphones, Ear Pads Cushions with High-Density Noise Isolation Foam, Made Leather - Black

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-09-09*