Skip to main content


This will show how to change the battery .

  1. JBL Xtreme battery replacement, Battery: step 1, image 1 of 1
    • 8.4 V battery pack for the JBL Extreme.

  2. JBL Xtreme battery replacement: step 2, image 1 of 1
    • Unscrew the screws and decover the shell.

  3. JBL Xtreme battery replacement: step 3, image 1 of 1
    • Remove the battery pack by unscrewing the 8 screws. Unplug the battery pack. Drill a hole. Seal holes with hot glue because of air tightness.

  4. JBL Xtreme battery replacement: step 4, image 1 of 2 JBL Xtreme battery replacement: step 4, image 2 of 2
    • Solder up the connectors + and - . Use a DC hollow bush 5.5 x 2.1 for the current supply. Isolate the ends of the cables.

  5. JBL Xtreme battery replacement: step 5, image 1 of 1
    • Battery 8,4 Volt. 13200mAh 8,4V Rechargeable Battery Pack Charger for Bicycle Light-XML-T6

  6. JBL Xtreme battery replacement: step 6, image 1 of 1
    • Solarstorm 2S2P 18650 Battery Case.

    • 4xPanasonic NCR18650B 3,7V 3400mAh=14400 mAh

    • + 5V USB ON/OFF Button


To reassemble your device, follow these instructions in reverse order.

One other person completed this guide.

Special thanks to these translators:

de en


These translators are helping us fix the world! Want to contribute?
Start translating ›


Member since: 06/27/2017

190 Reputation

1 Guide authored



step 2: unscrew the screws …. thats th point, where are the screws. the body looks like glued.

stephan dingsda - Reply


Don’t ask me, because I have this guide only translated not created. Try to contact the author on I have translated it so, that I tried to don’t change the original text.


Martin Kubica - Reply

I didn’t get it quite clear: is there a original battery replacement or an improvised one? I am interested in replacing mine but I didn’t find the battery.

Chris Fotu - Reply


See the comment higher.

Martin Kubica

Martin Kubica - Reply

WTF?!? Don’t do this. Buy a replacement battery online, and swap it out. Don’t drill holes, add glue, and try to cram in some battery that isn’t built for it!

fixit4 - Reply

Add Comment

View Statistics:

Past 24 Hours: 7

Past 7 Days: 60

Past 30 Days: 276

All Time: 24,569