---
product_id: 358353816
title: "3500mAh Rechargeable Replacement Battery Compatible with Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker"
brand: "rapthor"
price: "158 Lei"
currency: RON
in_stock: true
url: https://www.desertcart.ro/products/358353816-3500mah-rechargeable-replacement-battery-compatible-with-harman-kardon-onyx-studio
store_origin: RO
region: Romania
---

# 3500mAh Capacity Easy Installation Safety Features 3500mAh Rechargeable Replacement Battery Compatible with Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker

**Brand:** rapthor
**Price:** 158 Lei
**Availability:** ✅ In Stock

## Summary

> 🔊 Power Up Your Sound Experience!

## Quick Answers

- **What is this?** 3500mAh Rechargeable Replacement Battery Compatible with Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker by rapthor
- **How much does it cost?** 158 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/358353816-3500mah-rechargeable-replacement-battery-compatible-with-harman-kardon-onyx-studio)

## 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

- • **Safety First:** Built-in protection circuit guards against over-charge, over-discharge, and short-circuits.
- • **Effortless Setup:** Quickly install with the included screwdriver and plastic tool—no hassle, just plug and play.
- • **Unleash the Power:** Experience longer-lasting performance with a 3500mAh capacity that outshines the original battery.
- • **Durable Connection:** Extended battery wire for a robust connection, designed to outlast the competition.
- • **Cushioned Protection:** Foam strip absorbs shocks, ensuring your battery stays safe and sound.

## Overview

The rapthor3500mAh Rechargeable Replacement Battery is designed for the Harman Kardon Onyx Studio series, offering a high-capacity 3500mAh lithium-ion battery that ensures longer playtime. With easy installation and built-in safety features, this battery is the perfect upgrade for your wireless Bluetooth speaker.

## Description

3500mAh Rechargeable Replacement Battery Compatible with Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker

## Features

- 3500mAh High Capacity: 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Weight | 0.11 Kilograms |
| Unit Count | 1.0 Count |
| Number of Items | 1 |
| Material | Lithium-ion |
| Color | Black |
| Energy Specifications Met | Li-ion Battery Standard, Higher Capacity, Easy to Install, Safe Performance |
| Output Voltage | 3.7 Volts |
| Power Source | Battery Powered |
| Power Plug | No Plug |
| Number of Power Levels | 1 |
| Input Voltage | 3.7 Volts |
| Wattage | 12.95 watts |
| Connectivity Technology | Bluetooth |
| Connector Type Used on Cable | wireless |
| Compatible Devices | Compatible with Harman Kardon Onyx Studio 1/2/3/4 |
| Compatible Phone Models | Compatible with Harman Kardon Onyx Studio 1/2/3/4 |
| Additional Features | Easy to Install, Short Circuit Protection, Higher Capacity |

## Product Details

- **Brand:** rapthor
- **Connector Type:** wireless
- **Compatible Devices:** Compatible with Harman Kardon Onyx Studio 1/2/3/4
- **Compatible Phone Models:** Compatible with Harman Kardon Onyx Studio 1/2/3/4
- **Included Components:** Install tool, Replacement battery, Screwdriver
- **Special Feature:** Easy to Install, Higher Capacity, Short Circuit Protection
- **Color:** Black
- **Input Voltage:** 3.7 Volts
- **Wattage:** 12.95 watts
- **Number of Items:** 1

## Images

![3500mAh Rechargeable Replacement Battery Compatible with Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker - Image 1](https://m.media-amazon.com/images/I/716QlRKgC-L.jpg)

## Questions & Answers

**Q: Any feedback after using it for a while?**
A: Sorry charged after it arrived and haven’t used it.  So I don’t know how long it holds a charge

## Frequently Bought Together

- Rapthor 3500mAh Rechargeable Replacement Battery Compatible with Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker
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**Shop now:** [https://www.desertcart.ro/products/358353816-3500mah-rechargeable-replacement-battery-compatible-with-harman-kardon-onyx-studio](https://www.desertcart.ro/products/358353816-3500mah-rechargeable-replacement-battery-compatible-with-harman-kardon-onyx-studio)

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-04*