Price: $16.80
(as of Apr 16, 2026 21:26:44 UTC – Details)
Product description
Battery for Harman Kardon Onyx, New Upgraded (4200mAh) High Capacity Battery Replacement For Harman Kardon Onyx Studio 1/2/3/4 Bluetooth Speaker
High Quality IC Chip
Every battery is manufactured and tested under strict quality control standards. Build-in microchip to prevent over-charging, over-discharging, short-circuit and over-heating. Multiple-protection for safer operation for both user and devices.
Ultra High Capacity Harman Kardon Onyx Battery
Made of top-rate A Lithium-Ion battery cell. Upgrade 4200mAh Battery Compatible with Harman Kardon Onyx Studio 1/2/3/4 Bluetooth Speaker has super capacity, bring you more convenient and power your life.
Longer battery life
Upgraded High Capacity 4200 mAh. Longer battery life (1200+ cycles). Which means that you can use Harman Kardon Onyx Studio Replacement Battery and get more power without worrying about the sudden exhaustion of the battery.
FAQ after installation:
Q1: Why battery won’t charge?
A1: Maybe bad connect. Reopen your bluetooth speaker and reconnect the battery connector to logic board socket. Make sure battery connector connects well.
Q2: Why bluetooth speaker can’t turn on?
A2: Make sure battery connector was connected correctly and charge bluetooth speaker for 15 minutes with original charger and cable. The charging needs to be charged to 5% before it can be turned on normally, If battery have exhausted battery power.
Q3: Why battery connector does not fit?
A3: Please check if you have bought and received wrong model battery, this battery is only for Harman Kardon Onyx Studio 1, Onyx Studio 2,Onyx Studio 3,Onyx Studio 4 Bluetooth Speaker. Check the model number on the back of your bluetooth speaker.
Q4: How to use it for optimal use?
A4: When using the new Harman Kardon Onyx Battery, Please use up all the energy of battery for the first three times before charging, and then take a full charge fo 6-8 hours, thus the battery can reach the optimum effect of using.
🎶【Compatible Model】: This Harman Kardon Onyx battery replacement compatible with Harman Kardon Onyx Studio 1, Onyx Studio 2, Onyx Studio 3, Onyx Studio 4 Bluetooth Speaker.
🎶【High Quality Assurance】: Our upgrade Harman Kardon Onyx replacement battery has UL,CE and Rohs certification, uses Grade A+ rated battery cells. Every battery is manufactured and tested under strict quality control standards. Build-in microchip to prevent over-charging, over-discharging, short-circuit and over-heating. Multiple-protection for safer operation for both user and devices.
🎶【Long Battery Life】: This upgraded Harman Kardon Onyx high capacity battery, battery type: Lithium Polymer, Battery Capacity: 4200mAh, Watt-hour: 15.54Wh, Voltage Output: 3.7V. Brand new 0 cycle,built to last up to 2000+ charging cycles to provide longer battery life.Item including: 1 x high capacity battery, 1 x with repair tool kits.
🎶【Use Instructions】: Using up all the power of battery for the first three times before charging, and then take a full charge, thus the battery can be reached the optimum effect of using. Please remember that its full performance and longevity is only achieved after 8 to 10 complete charge and discharge cycles.
🎶【After-sales Service】: If you are not satisfied with our product, please contact our friendly customer service through the “Contact Seller” feature, we will reach out to you within 24 hours, solve your problem quickly and efficiently.