---
product_id: 450876689
title: "Tectra 3500mAh Battery Replacement for Harman Kardon Onyx Studio 4, Onyx Studio 3, Onyx Studio 2, Onyx Studio 1 Wireless Bluetooth Speaker"
brand: "tectra"
price: "₪105"
currency: ILS
in_stock: true
url: https://www.desertcart.co.il/products/450876689-tectra-3500mah-battery-replacement-for-harman-kardon-onyx-studio-4
store_origin: IL
region: Israel
---

# 3.7V stable voltage output 3500mAh high-capacity power Multi-layer circuit protection Tectra 3500mAh Battery Replacement for Harman Kardon Onyx Studio 4, Onyx Studio 3, Onyx Studio 2, Onyx Studio 1 Wireless Bluetooth Speaker

**Brand:** tectra
**Price:** ₪105
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your sound, own the moment.

## Quick Answers

- **What is this?** Tectra 3500mAh Battery Replacement for Harman Kardon Onyx Studio 4, Onyx Studio 3, Onyx Studio 2, Onyx Studio 1 Wireless Bluetooth Speaker by tectra
- **How much does it cost?** ₪105 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/450876689-tectra-3500mah-battery-replacement-for-harman-kardon-onyx-studio-4)

## Best For

- tectra enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Power Boost:** Seamlessly compatible with Onyx Studio 1-4 models for effortless replacement.
- • **Safety First, Party Always:** Built-in overcharge, short-circuit, and surge protection keeps your vibe secure.
- • **Certified Quality, OEM Match:** CE certified and rigorously tested to deliver original-level performance.
- • **Endless Beats, Zero Downtime:** Premium 3500mAh Li-Polymer battery powers your Onyx Studio longer than ever.
- • **Charge Freely, No Memory Worries:** Advanced no-memory effect tech means full capacity every charge cycle.

## Overview

This 3500mAh lithium-polymer replacement battery is designed specifically for Harman Kardon Onyx Studio wireless speakers (models 1 through 4). It delivers stable 3.7V output with no memory effect, ensuring longer playtime and reliable performance. Equipped with multi-layer circuit protection and CE certification, it guarantees safety and OEM-level quality for seamless, worry-free battery replacement.

## Description

3500mAh Battery Replacement for Harman Kardon Onyx Studio 4, Onyx Studio 3, Onyx Studio 2, Onyx Studio 1 Wireless Bluetooth Speaker

## Features

- ★ Replacement battery for Harman Kardon Onyx Studio Speaker, compatible with Harman Kardon Onyx Studio, Onyx Studio 2, Onyx Studio 3, Onyx Studio 4, li11b001f Wireless Bluetooth.
- ★ Battery Type: Premium Lithium-Polymer Battery, Voltage:3.7V, Capacity:3500mAh, 12.95Wh. Higher capacity provide longer lasting performance for your speaker.
- ★ No memory effect. Can be charged or discharged as needed without loss of capacity.
- ★ Tectra Products are CE certified,tested by manufacturer to match OEM products.
- ★ Built with multiple circuit protection (over-charging, short-circuit, high-temperature, and surge protection), and high-quality, fire-resistant construction.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Battery Weight | 50 Grams |
| Unit Count | 1 Count |
| Battery Cell Type | Lithium Ion |
| Recommended Uses For Product | Speaker |
| Reusability | Rechargeable |
| Battery Capacity | 3500 Milliamp Hours |
| Voltage | 7.4 Volts, 3.7 Volts |
| Compatible Phone Models | Harman Kardon Onyx Studio, Onyx Studio 2, Onyx Studio 3, Onyx Studio 4, li11b001f Wireless Bluetooth Speaker |

## Product Details

- **Number of Batteries:** 1 Lithium Ion batteries required. (included)
- **Brand:** Tectra
- **Battery Cell Composition:** Lithium Ion
- **Battery Capacity:** 3500 Milliamp Hours
- **Recommended Uses For Product:** Speaker

## Images

![Tectra 3500mAh Battery Replacement for Harman Kardon Onyx Studio 4, Onyx Studio 3, Onyx Studio 2, Onyx Studio 1 Wireless Bluetooth Speaker - Image 1](https://m.media-amazon.com/images/I/61oXzF4pCML.jpg)

## Frequently Bought Together

- Tectra 3500mAh Battery Replacement for Harman Kardon Onyx Studio 4, Onyx Studio 3, Onyx Studio 2, Onyx Studio 1 Wireless Bluetooth Speaker
- 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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*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-02-22*