---
product_id: 539775956
title: "rapthor3500mAh Rechargeable Replacement Battery for Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker"
brand: "rapthor"
price: "C$5250"
currency: NIO
in_stock: true
reviews_count: 1
url: https://www.desertcart.ni/products/539775956-rapthor3500mah-rechargeable-replacement-battery-for-harman-kardon-onyx-studio-1
store_origin: NI
region: Nicaragua
---

# 3500mAh high-capacity power Easy install with included tools Built-in safety protection circuit rapthor3500mAh Rechargeable Replacement Battery for Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker

**Brand:** rapthor
**Price:** C$5250
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up your Onyx Studio with unstoppable energy!

## Quick Answers

- **What is this?** rapthor3500mAh Rechargeable Replacement Battery for Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker by rapthor
- **How much does it cost?** C$5250 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/539775956-rapthor3500mah-rechargeable-replacement-battery-for-harman-kardon-onyx-studio-1)

## Best For

- rapthor enthusiasts

## Why This Product

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

## Key Features

- • **Power that Outlasts:** 3500mAh capacity delivers longer playtime than the original battery, keeping your beats alive.
- • **Safety First, Always:** Advanced protection circuit guards against overcharge, over-discharge, and short circuits for peace of mind.
- • **Plug & Play Simplicity:** Quick, hassle-free installation with screwdriver and plastic tool included—no tech skills needed.
- • **Seamless Compatibility:** Perfectly tailored for Harman Kardon Onyx Studio 1 through 4 models—upgrade without compromise.
- • **Engineered for Durability:** Foam cushioning and sponge tape protect internal wiring, ensuring a robust and reliable connection.

## Overview

The Rapthor 3500mAh rechargeable replacement battery offers a higher capacity than the original, extending your Harman Kardon Onyx Studio 1-4 speaker's playtime. Designed for easy installation with included tools, it features protective cushioning and a built-in safety circuit to prevent damage and ensure reliable performance.

## Description

rapthor3500mAh Rechargeable Replacement Battery for Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker

## Features

- 𝟯𝟱𝟬𝟬𝗺𝗔𝗵: Higher capacity than original battery, longer-lasting performance.
- 𝗘𝗮𝘀𝘆 𝘁𝗼 𝗨𝘀𝗲: Simply quick install with included screwdriver and plastic tool.
- 𝗖𝗼𝗻𝘀𝗶𝗱𝗲𝗿𝗮𝘁𝗲 𝗗𝗲𝘁𝗮𝗶𝗹𝘀: Foam strip for cushion absorbing, durable and longer than original’s battery wire for better connection, sponge tape well protects the connector wire from damage.
- 𝗦𝗮𝗳𝗲 𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲: Built-in protection circuit well protects the rechargeable battery from over-charge, over-discharge, short-circuit.
- 𝗖𝗼𝗺𝗽𝗮𝘁𝗶𝗯𝗶𝗹𝗶𝘁𝘆: Compatible with Harman Kardon Onyx Studio, Onyx Studio 2, Onyx Studio 3, Onyx Studio 4.

## Product Details

- **Number of batteries:** 1 Lithium Ion batteries required. (included)
- **Brand:** rapthor
- **Battery cell composition:** Lithium Ion
- **Battery capacity:** 3500 Milliampere Hour (mAh)
- **Recommended uses for product:** Replacement battery for Harman Kardon Onyx Studio

## Images

![rapthor3500mAh Rechargeable Replacement Battery for Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker - Image 1](https://m.media-amazon.com/images/I/71vkZwwvuOL.jpg)
![rapthor3500mAh Rechargeable Replacement Battery for Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker - Image 2](https://m.media-amazon.com/images/I/71fb7j5onEL.jpg)
![rapthor3500mAh Rechargeable Replacement Battery for Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker - Image 3](https://m.media-amazon.com/images/I/71KQEcMMWXL.jpg)
![rapthor3500mAh Rechargeable Replacement Battery for Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker - Image 4](https://m.media-amazon.com/images/I/71oNlwyPlPL.jpg)
![rapthor3500mAh Rechargeable Replacement Battery for Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker - Image 5](https://m.media-amazon.com/images/I/71SzmdsAz0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great! Would recommend.
*by K***H on 13 June 2024*

So far so good. Package was great, I have onyx 4 battery fitted fine. The screw driver provided doesn't work with my speaker it's Philips instead of torx. It has been charged will use the battery and see how it works later and feedback.Update: works great! After swapping the battery the speaker ran for 3 hours no stop which it has not been able to do for a while! Only down side are the tools provided don't help much with the onyx 4 but other than that the actual battery is great!

## Frequently Bought Together

- Rapthor 3500mAh Rechargeable Replacement Battery for Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker
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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-01-23*