How To Fix JBL Partybox 300 Will Not Charge Problem

The JBL Partybox 300 will not charge problem can be caused by several factors. It could be due to the speaker settings, bad charging port, defective charging cable, or a faulty charger. To fix this you will need to perform a series of troubleshooting steps on your speaker.

The JBL Partybox 300 is a large Bluetooth speaker that’s great to use for outdoor events. Aside from its loud sound it also has RGB lights to set the mood for your party. Some of its features include an 18 hour music playback time on a single full charge, mic and guitar inputs, and USB playback just to name a few.

Technical specifications of JBL Partybox 300:

  • Power Inputs: 100–240V AC and 12V DC
  • Input Terminals: RCA L/R, USB port, 3.5mm Aux-in, Mic/Guitar with volume control
  • Wireless Connectivity: Bluetooth Technology
  • Output Terminals: RCA L/R
  • TWS (True Wireless Stereo) connecting up to
  • 2 party speakers using Bluetooth technology
  • Bass Boost: Yes
  • Frequency Response: 45Hz–20kHz
  • Product dimensions (W x D x H):
  • 310 x 320 x 690mm
  • Bare Product Weight: 15.84kg
  • Packaging dimensions (W x D x H): 374 x 375 x 795mm
  • Product weight with packaging: 17.96kg
  • Transducers: 2 x 6.5″ woofer, 3 x 2.5″ tweeter
  • Battery type: Lithium-ion 74.88Wh (equivalent to 7.2V 1040mAh)
  • Battery charge time: 5 hours
  • Battery Playtime: 18 hours

What to do when your JBL Partybox 300 won’t charge

One problem that you might encounter with your Partybox 300 Bluetooth speaker is when it doesn’t charge . This can be an annoying issue especially if the speaker is running low on power as you won’t be able to use it. Here are the troubleshooting steps you need to do to fix the problem.

Method 1: Perform a factory reset on JBL Partybox 300

The first troubleshooting step you have to perform is a factory reset or hard reset. This will remove the data stored on the Bluetooth speaker and bring it back to its default settings. This is a useful troubleshooting step to do when you are experiencing problems with the device.

Time needed: 2 minutes.

Reset the speaker

  1. Remove the charging cord from the speaker.

    his will ensure that the device will not be charging.Fix JBL Partybox 300 Will Not Charge Problem

  2. Turn on the speaker.

    You can do this by pressing on the Power button.What to do when your JBL Partybox 300 won't charge

  3. Press and hold the Volume + button and Play button.

    Do this for not less than 3 seconds or until the speaker restarts.
    factory reset jbl partybox 300

Try checking if you can charge the speaker.

Method 2: Dirt present in the charging port

Using this speaker outdoors constantly will expose it to dirt and debris. If the charging port of the speaker gets dirt in it then this will interfere with the charging process. Try to inspect the charging port of the Bluetooth speaker and if you find any dirt or debris then you can clean this off using a toothpick or you can try blowing into it until it gets removed. Once done, check if you can charge the Bluetooth speaker.

Method 3: Try using a different charger to fix Partybox 300 will not charge issue

It’s possible that the charger you are using to charge the speaker is defective. Try using another charger on this speaker then check if the issue still occurs.

Method 5: Defective battery

A damaged battery can also be a factor that can prevent the speaker from getting charged. If this is the cause of the problem then replacing the battery will fix this. It’s recommended that you have this done at a service center.

Some reasons as to why a battery will get damaged is repeated overcharging or constant exposure to heat such as when you leave the speaker under the sun.

Method 6: Defective circuit board

The components inside of the speaker will get damaged if it comes in contact with water. If this is what’s causing the problem then you will need to have this fixed at a service center.

Having charging issues on your Bluetooth speaker can be a frustrating experience. Hopefully, this solution will help you fix the problem.

Visit our TheDroidGuy Youtube Channel for more troubleshooting videos.

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