How to Remove the Battery From a Denon Envaya Mini Bluetooth Speaker (DSB-100)

Considering the speaker is a highly-engineered and designed product with great sound quality, the factory battery in the Denon Envaya Mini is of poor quality and after owning it for a while, the battery's charge doesn't last very long anymore.

Being a network engineer who tinkers, and who has liked to take things apart since he was kid, I decided to tear down this speaker to see if I could replace the battery (Spoiler Alert: I couldn't because I could not find an exact replacement online with the same wiring and plug.)

Anyway, here are the tools I used to perform the steps outlined in this guide.

Total screws removed:

4 x Torx T5
12 x Phillips #1
10 x Phillips #00

Remove Rubber Feet and Torx Screws

Using a plastic prier, carefully pry off both rubber feet that are held on with 3 tiny strips of adhesive tape.

Next, using Torx T5 screwdriver (I recommend Wiha), remove the two Torx T5 screws located under each foot (4 total).

Remove Charger End Cap and Ribbon Cable

Remove the end cap that contains the Battery Status, micro USB connector, and 3.5mm audio ports by pulling it straight off.

Gently slide the ribbon cable out from the connector.

Slide Metal Screen Off the End

Remove the Rubber O-Ring

Using a Flat Plastic Implement, Gently Pry Fabric Off Adhesive Tape

Go all the way around.

Gently Remove the Fabric Along the Length of the Speaker

It's melted/welded on, so take your time.

You only need to remove one edge.

With the Fabric Removed, Pry Off the Other End Cap and O-Ring

It's clipped on tight, so you may need to rock it a bit as you pry it off.

Peel Back Tape Over Subwoofer Grill and Remove 4 Phillips Screws

Use a Phillips #1 screwdriver.

Set Aside Grill and Subwoofer to Expose Main Circuit Board

Remove 8 Phillips Screws That Holds the Main Body Together

Use Phillips #1 screwdriver.

There are four on each end.

Using a Razor Blade, Slice the Thin Adhesive Tape Crossing the Seams

Do this on both sides and both ends (4 cuts total).

Separate the Main Body Using a Plastic Pry Bar

Take your time in prying them apart. There are 3 clips total, as shown.

Here Is the Separated Body

Remove 4 Screws Holding the Main Circuit Board to the Body

Use a Phillips #00 screwdriver.

On the Power/volume End, Slide the Cable Out of Plastic Channel

It's taped down, so use the right tool to remove it such as a small flathead screwdriver.

On the Audio Jack End, Remove Two Screws From the Back

On the Same End, Remove Two More Screws

Gently Pry Off the Adhesive Tape and Remove Both Mini Circuit Boards

Pay special attention to not disconnect the tiny connector shown in the 4th photo.

On the Other End, Remove the Two Phillips Screws

The Main Circuit Board and Speakers Can Now Detached From the Plastic Body

Again, take your time in gently and slowly removing the parts from the body.

A lot of it is taped down, so pry them apart as needed.

Here We See the First Glimpse of the Battery

The Battery Is Taped Into the Body. Gently Pry It Out and Press the Tab to Remove It From the Circuit Board

The Unit Is Now Disassembled. Here Are Photos of the Circuit Board

Note: The main circuit board is in 3 pieces -- two of which are soldered together in a 90-degree angle.

Take extra care as to not break those joints!

Assembly is the reversal of this process. To reassemble the fabric, I used clear scotch tape to hold the two ends together lengthwise. It was then covered by the main perforated metal screen once reassembled.

~~I could not find a replacement battery online. If you find one, please let me know. I ended up putting the entire thing back together as-is with the factory battery.~~

Nov. 2024: Battery Located and Replaced

Nov. 2024 Update: I finally located a battery online on Amazon (USA) for about $17 (USD).

Cameron Sino Battery for Denon DSB-100, Envaya Mini PN:Denon CA-B2120265, CABICR18650-260 2600mAh / 9.62Wh

I just finished swapping out the batteries today. To replicate the factory "padding" on the battery, I cut up some 3M Command Strips into slivers. That worked great.

I then replaced the thin double-sided tape that held the blue fabric in place using 3M Double Coated Tissue Tape (model 9448A) that I already had on hand. That also worked great. Just had to cut it into thin slivers using scissors.

I also replaced the tiny double-sided tape that held the rubber feet onto the body using the same tissue tape.