Harman Kardon Onyx Studio 1 Bluetooth Speakers Battery Replacement Guide: Giving Your 10-Year-Old Speaker a New lease on life

Is your Harman Kardon Onyx Studio 1 becoming increasingly “delicate”? Even after charging overnight, it won’t even finish a single song after being unplugged? Or does it only work when constantly plugged in, completely shutting down as soon as it’s unplugged?
The good news is: replacing the  Harman Kardon Onyx Studio 1 Bluetooth Speakers Batterycan bring this classic speaker back to full functionality. This article will guide you step-by-step on how to safely and successfully replace the battery.
I. Identifying the Problem: Is the Battery Really Failed?
Before disassembling the speaker, first identify the root cause of the problem. Onyx Studio 1 not working can be caused by a variety of reasons.
Detailed steps for replacing the Harman Kardon Onyx Studio 1 Bluetooth Speakers BatteryPreparationTools needed:
Phillips screwdriver (PH0 or PH00)
Plastic pry bar (or guitar pick)
Heat gun or hair dryer
Small storage box (for organizing screws)
Safety precautions:
Ensure the speaker is completely powered off and the charger is unplugged before proceeding.
Operate in a well-ventilated environment.
If the old  Harman Kardon Onyx Studio 1 Bluetooth Speakers Battery is bulging, handle it gently to avoid squeezing or puncturing it.
Step 1: Remove the bottom rubber pad
The bottom of the Onyx Studio 1 has a ring of rubber anti-slip pads; the screws are hidden under these pads.
Evenly heat the bottom rubber pad with a heat gun or hairdryer (the temperature should not be too high, just warm to the touch).
Gently pry up the rubber pad from the edge with a plastic pry bar.
Slowly peel off the rubber pad to expose the screw holes on the bottom.
Step 2: Remove the bottom cover screws.
Step 3: Open the speaker casing.
Step 4: Locate and disconnect the Harman Kardon Onyx Studio 1 Bluetooth Speakers Battery
Locate the battery inside the speaker (usually located in the center or on one side of the bottom).
Observe the battery connector type (2-pin white plug or 3-pin black plug).
Gently disconnect the battery connector—using your fingernail or plastic pry bar. Use a pry bar to clamp both sides of the plug and pull outwards evenly. Do not pull the power cord directly.
Step 5: Remove the old batteryCheck the battery’s mounting method (usually attached to the bottom shell with double-sided tape, or with a mounting bracket).
If attached with double-sided tape, carefully pry it off from the edge with a plastic pry bar.
Remove the old battery and take photos to record the interface type and wiring method (for reference during installation).
Step 6: Install the new batteryPlace the new battery into the battery compartment, ensuring it is in the correct position.
After replacing the battery, proper usage habits can significantly extend the lifespan of the Harman Kardon Onyx Studio 1 Bluetooth Speakers Battery:
First Use (Activation)Fully charge: Fully charge the new battery with the original charger (green light will stay on). Completely discharge: Unplug the charger and play music until it automatically shuts off. Recharge: Repeat this process 2-3 times to fully “activate” the battery and achieve optimal performance, allowing classic sounds to continue.LI11B001F 2600mAh/9.62Wh Battery Replacement for Harman Kardon Onyx Studio 1/Onyx Studio 2 Speaker
A healthy battery is not only about battery life but also about safety. If you find that the Harman Kardon Onyx Studio 1 Bluetooth Speakers Batteryis bulging, please take immediate action; if it’s just a decrease in battery life, then take steps to extend its life.