Nothing is more eye-catching than these prominent, tall speakers from JBL that come with LED lights. Its tweeters can create a stereo image either horizontally or vertically, depending on its positioning. Additionally, most JBL Partybox speakers have extremely long battery life. It also features a microphone and guitar port, making it perfect for musicians.
But unfortunately, even though it is a great sound device, many users started reporting that their JBL Partybox is not charging. Generally, we are talking about why the party box is not charging; then, most probably, it might be due to either a bad USB cable or a faulty battery.
However, no matter what the reason is, we need to fix it. But how? Don’t worry! We have solutions for you in this guide. So, if you are looking for some solution to fix your JBL Partybox, perform the fixes mentioned below.
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How to Fix If JBL Boombox 2 / 3 Not Turning On
Fix: JBL Boombox 2/3 Not Loud Enough, Sound Cuts Out, or Muffled

| Supported Model | ||
| JBL PartyBox 100 | JBL PartyBox 110 | JBL PartyBox 310 |
| JBL PartyBox 200 | JBL PartyBox 300 | JBL PartyBox 400 |
| JBL PartyBox 410 | JBL PartyBox 710 |
How to Fix JBL Partybox Not Charging Issue
So, here is some workaround to resolve the JBL Partybox not charging issue; therefore, make sure to perform the fixes we have mentioned below one after the other until you get the right one for yourself. Also, before we start, keep in mind that it might be possible that these fixes may not work for some users depending upon the reason behind this issue.
I have a Partybox 310, which is new, the battery has discharged for the first time. Now, I tried to recharge, the led is blinking, but don`t want to increase. I measured the voltage, is 8.4 V, appears to be fully charged, but in application shows 1-2%. On battery, the speaker turn on and in 10 seconds turned off. I tried everything found on internet, nothing works. It seems to be a fault in one of these two boards – circuit board or power board (the battery seems to be 100%), but I don`t know which is. It is very frustrating situation, because I didn`t believe before that even JBL brand could have such big problems with the famous Partybox. Please let me know what do you think what are the solving methods. Thank you