🔋 Power up your Onyx Studio with unstoppable energy!
The Rapthor 3500mAh rechargeable replacement battery offers a higher capacity than the original, extending your Harman Kardon Onyx Studio 1-4 speaker's playtime. Designed for easy installation with included tools, it features protective cushioning and a built-in safety circuit to prevent damage and ensure reliable performance.
K**H
Great! Would recommend.
So far so good. Package was great, I have onyx 4 battery fitted fine. The screw driver provided doesn't work with my speaker it's Philips instead of torx. It has been charged will use the battery and see how it works later and feedback.Update: works great! After swapping the battery the speaker ran for 3 hours no stop which it has not been able to do for a while! Only down side are the tools provided don't help much with the onyx 4 but other than that the actual battery is great!
Trustpilot
5 days ago
2 months ago
