---
product_id: 243137219
title: "rapthor 3500mAh High Capacity Replacement Battery for Jawbone Big Jambox Wireless Bluetooth Speaker"
brand: "rapthor"
price: "8523 kr"
currency: ISK
in_stock: true
reviews_count: 8
url: https://www.desertcart.is/products/243137219-rapthor-3500mah-high-capacity-replacement-battery-for-jawbone-big-jambox
store_origin: IS
region: Iceland
---

# 25% more power ISO9001 certified 3500mAh capacity rapthor 3500mAh High Capacity Replacement Battery for Jawbone Big Jambox Wireless Bluetooth Speaker

**Brand:** rapthor
**Price:** 8523 kr
**Availability:** ✅ In Stock

## Summary

> 🔊 Power Up Your Party with Rapthor!

## Quick Answers

- **What is this?** rapthor 3500mAh High Capacity Replacement Battery for Jawbone Big Jambox Wireless Bluetooth Speaker by rapthor
- **How much does it cost?** 8523 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/243137219-rapthor-3500mah-high-capacity-replacement-battery-for-jawbone-big-jambox)

## 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:** Equipped with high-precision voltage detection for a stable and safe performance.
- • **Easy Installation:** Comes with a free screwdriver tool for hassle-free battery replacement.
- • **Unleash the Power:** Experience a 3500mAh capacity that keeps your Big Jambox rocking longer.
- • **Elevate Your Sound:** Enjoy 25% more battery life than the original for uninterrupted music sessions.
- • **Satisfaction Guaranteed:** 30-day money-back guarantee and a 12-month warranty for peace of mind.

## Overview

The Rapthor 3500mAh High Capacity Replacement Battery is designed specifically for the Jawbone Big Jambox Wireless Bluetooth Speaker, offering a 25% increase in capacity over the original battery. With ISO9001, RoHS, and CE certifications, this battery ensures safety and reliability, featuring a built-in voltage detection circuit. Each purchase includes a free screwdriver tool for easy installation and comes with a 30-day money-back guarantee and a 12-month warranty.

## Description

rapthor3500mAh High Capacity Replacement Battery for Jawbone Big Jambox Wireless Bluetooth Speaker

## Features

- Type: Li-ion. Capacity: 3500mAh, increased 25% capacity than the original. ISO9001, RoHS and CE Certificated.
- Designed for: Big Jambox speaker J2011-03-US.
- Safety: Built in high-precision voltage detection circuit and delay circuit, make sure the battery run stable and perfectly.
- You Can Get: 1 pc Rapthor replacement battery( speaker not included) and free screwdriver tool
- 100% Customer Satisfaction Guarantee: 30-day Money Back, 12-month Warranty for this Rapthor battery.

## Images

![rapthor 3500mAh High Capacity Replacement Battery for Jawbone Big Jambox Wireless Bluetooth Speaker - Image 1](https://m.media-amazon.com/images/I/61Qx9Gztg-L.jpg)

## Questions & Answers

**Q: My model # says J2011, no extra numbers. What do you think? Should it work?**
A: This worked for me with the same J2011 model

**Q: My model is J2-011. Will this work?**
A: I have the same model and it worked for me.

**Q: How long does it take to charge the battery ?**
A: My battery came 40% charged but it took maybe 3 hrs to fully charge the battery I highly recommend this instead of buying a new speaker works great

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Works Amazingly!
  

*by M***Y on Reviewed in the United States on May 22, 2022*

My new Rapthor 3500mAh battery arrived well packaged and undamaged. Included with the new battery was a T6 Torx driver, a small plastic prying tool, and a small instruction booklet. I read previous reviews before attempting to change the battery. Under the suggestion of several reviewers, I chose to use my own T6 Torx driver as a number of reviews indicated the T6 Torx driver included with the battery was of cheap quality and had a tendency to strip the heads of the screws. I used a Craftsman T6 Torx driver which worked perfectly! I tried using the small plastic prying tool that came with the battery, but like many other reviewers, I decided to use a butter knife or other sturdy, thin item as my prying tool.The instruction booklet is small and the print and pictures are very tiny, but I was able to make out the pictures and read all print. You may want to take pictures of the booklet information and magnify that information if you are having difficulty with the small type. Overall the instructions are well written and easy to follow. I highly suggest you read through the instructions at least a couple times before attempting to actually replace the battery. This will help you to fully understand each step of the replacement process. I also took pictures, prior to disassembly, of each step. This may come in handy during reassembly or if you happen to wonder where a particular piece belongs.The first step is to pry off the end caps of the speaker. This is where the prying tool comes in handy (or your butter knife or other small, flat tool). It does take a some force to "pop" off the caps. I loosened the cap by running my prying tool all the way around all 4 sides of the cap before using more force to actually "pop" off the cap. Once both side caps were off the speaker, you then have to remove the the Torx screws with the T6 Torx driver. The screws are tightly screwed in place, so don't be surprised if you have to use some force to remove them. You will notice they are screwed into a plastic casing. The only issue I had with the screws and plastic casing was when I removed the screws holding the grounding plate in place. One of the plastic casings holding the grounding screws crumbled, but I attribute this to the age of my speaker (it is over 10 years old) and plastic has a tendency to become brittle with age. This will not affect the functioning of your speaker should you encounter the same problem. The rest of the disassembly went well. I suggest you have some needle nose pliers handy as removing the plastic power clip (the one that has the red and black wires) is a little tricky since the clip is positioned just below the level of the circuit board. The needle nose pliers made removal and replacement a breeze! Prior to removing the red and black wires attached to the plastic clip, make note of how the original red and black wires are positioned on the plastic (note how they are positioned around the plastic prongs). You want to be sure the wires are not "pinched" when you reassemble your speaker. I used double-sided sticky tape to hold my wires in place so they would not move during reassembly. I also used the double-sided sticky tape to hold my new battery in place (you will note that the old battery had sticky tape holding it in position). The tape will help keep your new battery in place while you are reassembling the case. Once the  battery was replaced, I just reversed all the steps to reassemble the speaker. My new battery came 75% fully charged, so I was able to test it immediately. It worked GREAT! I let it fully charge and it has been working perfectly ever since. Prior to battery replacement, my speaker would not hold a charge....the old battery was completely dead. I could only run my speaker off the power cord. Now that I have my new battery in place, I have run my speaker for about 6 hours of continuous use and my battery level is still nearly fully charged! I HIGHLY recommend this battery!Packaging of Product Upon Arrival:  EXCELLENT!Quality of product:  EXCELLENT!Ease of Battery Replacement: GOOD (There is considerable disassembly and this may intimidate some individuals)Instructions: GOOD (The instruction booklet is small and the pictures and print may be difficult for some to clearly view)Overall, I am VERY satisfied with this product. My speaker is holding a charge like it did when it was new!RDM

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Well Built, High capacity and a piece of cake to install.  10 yr. old Big Jambox JAMS AGAIN !!!
  

*by S***) on Reviewed in the United States on July 2, 2023*

Just take care with the screwdriver and it works great.  if/when it does strip, hit it with a fine metal file to flatten tip again.  One thing not mentioned in the instructions, YES, included instructions, in English...is the 2 tiny little o-rings that fit under the ground brackets on base.  Not a game changer, but they may be for vibration proofing the ground clamp by sub woofers.  Also make sure to orient the battery in the same position, taking note of the battery circuit board not blocking re-install of base.Honestly, alot easier than it sounds.  Just take your time and lay out screws exact as they are removed and shouldn't have a problem.  The battery itself come nicely packaged with tools and color instructions with pictures.  Charged up in a couple hours and used for 3-4 hrs.  Still almost fully charged.  Saved me from having to bust out another $300 for a new one that sounds as good as this one.Definitely recommended.P.S.  While apart, cleaned it up and re-painted the cover.  Looks and Sounds Like NEW !!!

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    fits like a glove!
  

*by M***. on Reviewed in the United States on September 22, 2023*

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     directions are clear and simple to understand for people who are at least somewhat mechanically inclined. just be careful not to drop any screws inside the unit when re-assembling. Very reasonable option for breathing new life into an old speaker. video is speaker with new battery installed.

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-03-09*