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![NYI [Upgraded 3500mAh] Replacement Battery for Harman Kardon Onyx Studio 1/2/ 3/4 Speaker](https://m.media-amazon.com/images/I/7148tIm5C0L.jpg)
🔋 Power your vibe, never miss a beat!
The NYI Upgraded 3500mAh Replacement Battery is a high-capacity, 3.7V lithium-ion battery designed specifically for Harman Kardon Onyx Studio models 1 through 4. Featuring built-in PTC safety protections and a DIY-friendly installation kit, it ensures extended playtime and reliable performance. Supported by a 12-month warranty and responsive customer service, this battery is the ultimate upgrade to keep your premium speaker sounding fresh and powerful.
| ASIN | B09C25691F |
| Batteries | 1 Lithium Ion batteries required. |
| Best Sellers Rank | #66,990 in Electronics ( See Top 100 in Electronics ) #1,618 in Portable Bluetooth Speakers |
| Customer Reviews | 4.6 4.6 out of 5 stars (200) |
| Date First Available | August 6, 2021 |
| Item Weight | 3.84 ounces |
| Manufacturer | MSW (Shenzhen) Technology Limited |
| Package Dimensions | 6.73 x 3.9 x 1.14 inches |
P**H
Great replacement
Easy replacement for the original battery. Got my speaker back up and working. Would recommend this to everybody.
T**X
Easy to replace, great battery life.
Works great! My two Onyx 3 speakers were down to 30 minutes playtime. It took less than 10 minutes with each speaker to put in the new batteries. The screws on the Onyx 3 are standard Phillips. I’ve only tested one so far because after 5 hours it was still playing strong, I believe the second speaker will be just was strong. With the Onyx 3 the battery case screws are slightly shorter than the speaker case screws, just keep them separate.
M**Y
Easy install
Very clear directions and simple process. Took me 10 minutes to replace the battery on my Onyx 4 and it works great. Comes with everything you need.
C**A
Recommend !!
Easy to follow instructions. Works great !! Best upgrade for the price!!
T**C
Outstanding Replacement
This was a perfect replacement for a Harmon Kardon Onyx Bluetooth speaker. It has a larger capacity and requires a longer charge, but that is fine with me.
J**S
Great Replacement Battery for Greaty Quality Speaker
Instructions were clear and easy to follow, with tools included with the battery. Excellent.
D**D
Used
Product is missing parts and is used. Random screws in bob and tool is used.
J**R
Works and is an easy upgrade.
Fit well and was the easiest repair I've ever performed. Am very pleased with this repair kit that gave new life to my favorite speaker.
Trustpilot
2 weeks ago
2 months ago