---
product_id: 366125418
title: "(2-Pack) 3.7V 2600mAh Li-ion Replacement Battery for LI11B001F Harman Kardon Onyx Studio 1 2 3 4 Wireless Bluetooth Speaker"
brand: "yutsujo"
price: "S/.91"
currency: PEN
in_stock: true
reviews_count: 6
category: "Yutsujo"
url: https://www.desertcart.pe/products/366125418-2-pack-3-7v-2600mah-li-ion-replacement-battery-li11b001f
store_origin: PE
region: Peru
---

# Grade A stable lithium-ion cells 2600mAh high-capacity power Precision fit, no mods needed (2-Pack) 3.7V 2600mAh Li-ion Replacement Battery for LI11B001F Harman Kardon Onyx Studio 1 2 3 4 Wireless Bluetooth Speaker

**Brand:** yutsujo
**Price:** S/.91
**Availability:** ✅ In Stock

## Summary

> 🔊 Power your party with precision and premium performance!

## Quick Answers

- **What is this?** (2-Pack) 3.7V 2600mAh Li-ion Replacement Battery for LI11B001F Harman Kardon Onyx Studio 1 2 3 4 Wireless Bluetooth Speaker by yutsujo
- **How much does it cost?** S/.91 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/366125418-2-pack-3-7v-2600mah-li-ion-replacement-battery-li11b001f)

## Best For

- yutsujo enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Perfection:** Engineered for an exact fit with your Harman Kardon Onyx Studio 1-4—no tools or tweaks required.
- • **Premium Power, Proven Safety:** Grade A lithium-ion cells ensure consistent voltage and protect your speaker from overheating and short circuits.
- • **Built to Last, Built to Protect:** Durable ABS and polycarbonate casing guards against physical damage and extends battery lifespan.
- • **Endless Beats, Zero Interruptions:** 2600mAh capacity fuels hours of immersive sound without missing a beat.
- • **Double the Power, Double the Peace:** Two-pack convenience with a 24-month warranty keeps your music flowing and your mind at ease.

## Overview

This 2-pack of 3.7V 2600mAh Li-ion replacement batteries is designed specifically for Harman Kardon Onyx Studio 1-4 wireless Bluetooth speakers. Featuring high-capacity Grade A lithium-ion cells, these batteries deliver reliable, extended playback with stable voltage and built-in safety protections. The precision fit ensures hassle-free installation, while the robust ABS/polycarbonate housing guards against damage and overheating. Backed by a 24-month warranty, this set guarantees uninterrupted premium sound for your wireless speaker experience.

## Description

desertcart.com: YUTSUJO (2-Pack) 3.7V 2600mAh Li-ion Replacement Battery for LI11B001F Harman Kardon Onyx Studio 1 2 3 4 Wireless Bluetooth Speaker : Health & Household

Review: Battery perfect. Installed and operational - Quick delivery
Review: A Great Replacement for the Original Battery, Except for One Caveat! - First off, you should only need one battery. At least that was the case for my Onyx 2 Bluetooth Speaker. It's nice to have an extra one and in my case I also have the Onyx 1, so I will be replacing that battery as well. I bought both of my Onyx units refurbished and one thing I noticed is that the battery life was pretty much at the end of its life on both units and wouldn't really hold a charge for longer than an hour maybe at best, so that's why I got these replacement batteries. The installation process is not too complicated. You'll just need to unscrew a few screws after prying the front grill of the speaker off. You can find a YouTube tutorial on how to do this and it shouldn't take you any more than 15 minutes. There was a rubber gasket that was coming off inside of the speaker and I wasn't sure how to get it back in place, so I just pulled it off completely and haven't had really any issues and not sure why it's there to begin with. The only caveat with this replacement battery is that it doesn't come with the little velcro tape that helps secure the battery in its compartment to keep it from rattling around as well as a plastic piece near where the wire connects to the battery that gives you easier access when connecting the battery clip tab to the motherboard. It also doesn't come with the insulation around the wire. I just took the velcro tape off of the old battery and put it onto the new and didn't bother with the insulation piece around the wire or the plastic tab that seems impossible to get off the old one. As far as battery life for the new battery, it lasts for at least 4 hours on a full charge. I think the OEM batteries are supposed to last like 8 hours (although realistically it's also only 4 hours) but I'll take whatever extra life I can get with these newer batteries.

## Features

- HIGH-CAPACITY DESIGN: 2600mAh Li-ion battery provides extended music playback time for your Onyx Studio wireless speaker, delivering powerful and uninterrupted sound for hours
- PREMIUM BATTERY CELLS: Built using Grade A lithium-ion cells to ensure stable voltage, consistent performance, and reliable safety throughout its charge cycles
- PRECISION FIT: Engineered to fit exactly like the original LI11B001F battery without modification, ensuring a smooth and secure installation in your speaker
- DURABLE AND SAFE: Encased in robust ABS and polycarbonate housing to resist physical damage and protect against overheating, short-circuit, or overcharging
- COMPLETE PACKAGE: Includes 2 x battery packs [Rechargeable]; backed by a 24-month worry-free warranty and friendly customer service for your peace of mind

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B093FHPMLS |
| Batteries | 2 Product Specific batteries required. (included) |
| Best Sellers Rank | #298,686 in Health & Household ( See Top 100 in Health & Household ) #795 in 3.7V Batteries |
| Customer Reviews | 4.0 4.0 out of 5 stars (30) |
| Date First Available | April 25, 2021 |
| Item Weight | 0.352 ounces |
| Manufacturer | elxjar |
| Package Dimensions | 3.19 x 2.56 x 1.06 inches |

## Product Details

- **Battery Capacity:** 2600 Milliampere Hour (mAh)
- **Battery Cell Composition:** Lithium Ion
- **Brand:** YUTSUJO
- **Number of Batteries:** 2 Product Specific batteries required. (included)
- **Recommended Uses For Product:** Bluetooth Speaker Power Supply

## Images

![(2-Pack) 3.7V 2600mAh Li-ion Replacement Battery for LI11B001F Harman Kardon Onyx Studio 1 2 3 4 Wireless Bluetooth Speaker - Image 1](https://m.media-amazon.com/images/I/61socqWT29L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Battery perfect. Installed and operational
*by J***M on November 13, 2023*

Quick delivery

### ⭐⭐⭐⭐ A Great Replacement for the Original Battery, Except for One Caveat!
*by J***X on May 31, 2025*

First off, you should only need one battery. At least that was the case for my Onyx 2 Bluetooth Speaker. It's nice to have an extra one and in my case I also have the Onyx 1, so I will be replacing that battery as well. I bought both of my Onyx units refurbished and one thing I noticed is that the battery life was pretty much at the end of its life on both units and wouldn't really hold a charge for longer than an hour maybe at best, so that's why I got these replacement batteries. The installation process is not too complicated. You'll just need to unscrew a few screws after prying the front grill of the speaker off. You can find a YouTube tutorial on how to do this and it shouldn't take you any more than 15 minutes. There was a rubber gasket that was coming off inside of the speaker and I wasn't sure how to get it back in place, so I just pulled it off completely and haven't had really any issues and not sure why it's there to begin with. The only caveat with this replacement battery is that it doesn't come with the little velcro tape that helps secure the battery in its compartment to keep it from rattling around as well as a plastic piece near where the wire connects to the battery that gives you easier access when connecting the battery clip tab to the motherboard. It also doesn't come with the insulation around the wire. I just took the velcro tape off of the old battery and put it onto the new and didn't bother with the insulation piece around the wire or the plastic tab that seems impossible to get off the old one. As far as battery life for the new battery, it lasts for at least 4 hours on a full charge. I think the OEM batteries are supposed to last like 8 hours (although realistically it's also only 4 hours) but I'll take whatever extra life I can get with these newer batteries.

### ⭐ Does not work
*by E***D on March 8, 2024*

Unfortunately the return window closed. The battery doesn't hold charge. My speaker works for an hour max. I don't recommend this.

## Frequently Bought Together

- YUTSUJO (2-Pack) 3.7V 2600mAh LI11B001F Li-ion High-Capacity Replacement Batteries for Harman/Kardon Onyx Studio 1, 2, 3, 4
- AC Adapter Charger Replacement for Harman Kardon Onyx Studio 4/3 / 2/1 Wireless Portable Speaker Onyx Studio Wireless Speaker System 6132A-ONYXST, AU38AA-00,NSA40ED-190200, ESX2567Q, Power Supply
- 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 Peru*
*Store origin: PE*
*Last updated: 2026-02-08*