---
product_id: 606116472
title: "3500mAh Battery Replacement Compatible with Harman Kardon Onyx Studio 5, Onyx Studio 6 Wireless Bluetooth Speaker- Long-Lasting Power for Endless Music Bliss"
brand: "nyi"
price: "A$40"
currency: AUD
in_stock: true
reviews_count: 8
category: "Nyi"
url: https://www.desertcart.com.au/products/606116472-3500mah-battery-replacement-compatible-with-harman-kardon-onyx-studio-5
store_origin: AU
region: Australia
---

# 3.7V stable voltage 3500mAh high capacity Complete installation kit included 3500mAh Battery Replacement Compatible with Harman Kardon Onyx Studio 5, Onyx Studio 6 Wireless Bluetooth Speaker- Long-Lasting Power for Endless Music Bliss

**Brand:** nyi
**Price:** A$40
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your vibe, never miss a beat!

## Quick Answers

- **What is this?** 3500mAh Battery Replacement Compatible with Harman Kardon Onyx Studio 5, Onyx Studio 6 Wireless Bluetooth Speaker- Long-Lasting Power for Endless Music Bliss by nyi
- **How much does it cost?** A$40 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/606116472-3500mah-battery-replacement-compatible-with-harman-kardon-onyx-studio-5)

## Best For

- nyi enthusiasts

## Why This Product

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

## Key Features

- • **Premium Durability:** Crafted with high-grade components ensuring long-lasting, reliable performance.
- • **Endless Music Power:** 3500mAh capacity fuels marathon listening sessions without interruption.
- • **Plug & Play Upgrade:** Includes screwdriver, anti-shock strips, and metal crowbar for effortless battery swap.
- • **Peace of Mind Warranty:** Backed by a 12-month warranty and responsive customer support for worry-free use.
- • **Perfect Fit, Zero Hassle:** Specifically engineered for Onyx Studio 5 & 6 for seamless, tool-assisted installation.

## Overview

The NYI 3500mAh replacement battery is a precision-engineered power solution for Harman Kardon Onyx Studio 5 and 6 speakers, delivering stable 3.7V output and extended playtime. It comes with a full installation kit and a 12-month warranty, ensuring a hassle-free upgrade that keeps your wireless speaker performing at its best.

## Description

Battery Replacement Compatible with Harman Kardon Onyx Studio 5, Onyx Studio 6 Wireless Bluetooth Speaker

Review: Na - NA
Review: Works better than the original. - I intended to just order a charger, then saw this replacement battery. My speaker being used a lot and for a few years. A new upgraded battery would be nice. Easy installation as per instructions. With tools being provided in the kit. Would buy again as soon as I locate my other one in my storage. Lol

## Features

- Enhance Your Music Experience with Long-Lasting Power : The NYI replacement battery for Harman Kardon Onyx Studio 5 and Onyx Studio 6 ensures uninterrupted playtime, allowing you to enjoy your favorite tunes for longer.
- Excellent Compatibility : Designed specifically for the Harman Kardon Onyx Studio 5 and Onyx Studio 6, the NYI replacement battery ensures a perfect fit, hassle-free installation, and reliable performance.
- Powerful and Reliable : With a voltage rating of 3.7V and an impressive capacity of 3500mAh, this replacement battery provides a stable and long-lasting power source for uninterrupted, immersive audio.
- High-Quality Construction : Crafted with precision and utilizing premium-grade components, the NYI replacement battery ensures optimal performance, longevity, and reliable power delivery to your Harman Kardon speakers.
- Satisfactory After-sales Service : We provide an 12 month warranty for the upgraded Harman Kardon replacement battery. If you have any questions, please contact us by email! PS: The package includes 1 Harman Kardon replacement battery, 1 screwdriver handle, 1 Anti-shock strips, 1 Battery installation manual, 1 metal crowbar.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CLJ8ZYGL |
| Best Sellers Rank | #2,714 in Portable Bluetooth Speakers #18,963 in MP3 & MP4 Player Accessories |
| Customer Reviews | 3.6 3.6 out of 5 stars (18) |
| Date First Available | October 21, 2023 |
| Item Weight | 5 ounces |
| Item model number | BD024 |
| Manufacturer | MSW (Shenzhen) Technology Limited |
| Product Dimensions | 0.1 x 0.1 x 0.1 inches |

## Product Details

- **Battery Capacity:** 3500 Milliamp Hours
- **Battery Cell Composition:** Lithium Ion
- **Brand:** NYI
- **Recommended Uses For Product:** Harman Kardon Onyx Studio 5, Harman Kardon Onyx Studio 6
- **Unit Count:** 1.0 Count

## Images

![3500mAh Battery Replacement Compatible with Harman Kardon Onyx Studio 5, Onyx Studio 6 Wireless Bluetooth Speaker- Long-Lasting Power for Endless Music Bliss - Image 1](https://m.media-amazon.com/images/I/71gY5xvKnFL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Na
*by A***N on November 4, 2025*

NA

### ⭐⭐⭐⭐⭐ Works better than the original.
*by L***M on December 18, 2024*

I intended to just order a charger, then saw this replacement battery. My speaker being used a lot and for a few years. A new upgraded battery would be nice. Easy installation as per instructions. With tools being provided in the kit. Would buy again as soon as I locate my other one in my storage. Lol

### ⭐ Non-working
*by C***H on June 10, 2024*

I was out of town when it came in. When I got back home and tried it, it did not work. I left it plugged in to see if it would take a charge and it would not. Will order another from another vendor and see if that will be a better buy and will write a review for that one.

## Frequently Bought Together

- NYI 3500mAh Battery Replacement Compatible with Harman Kardon Onyx Studio 5, Onyx Studio 6 Wireless Bluetooth Speaker- Long-Lasting Power for Endless Music Bliss
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- for Harman Kardon Charger Onyx Studio 8 7 6 5 4 3 2 1 Wireless Bluetooth Speaker Replacement Harmon Kardon Charger 19V AC Power Cord Supply【10 FT】 VHBW

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**Shop now:** [https://www.desertcart.com.au/products/606116472-3500mah-battery-replacement-compatible-with-harman-kardon-onyx-studio-5](https://www.desertcart.com.au/products/606116472-3500mah-battery-replacement-compatible-with-harman-kardon-onyx-studio-5)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-26*