--- product_id: 406102328 title: "Rechargeable 3500mAh Lithium Battery Compatible with Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker" brand: "rapthor" price: "₨831" currency: SCR in_stock: true url: https://www.desertcart.sc/products/406102328-rechargeable-3500mah-lithium-battery-compatible-with-harman-kardon-onyx-studio store_origin: SC region: Seychelles --- # 3500mAh High Capacity Easy 10-min Installation Built-in Safety Circuit Rechargeable 3500mAh Lithium Battery Compatible with Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker **Brand:** rapthor **Price:** ₨831 **Availability:** ✅ In Stock ## Summary > 🔋 Power up your vibe—never miss a beat with Rapthor’s high-capacity battery! ## Quick Answers - **What is this?** Rechargeable 3500mAh Lithium Battery Compatible with Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker by rapthor - **How much does it cost?** ₨831 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/406102328-rechargeable-3500mah-lithium-battery-compatible-with-harman-kardon-onyx-studio) ## Best For - rapthor enthusiasts ## Why This Product - Trusted rapthor brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safe & Sound:** Advanced protection circuit guards against overcharge, over-discharge, and short circuits for peace of mind. - • **Install Like a Pro:** Includes screwdriver and plastic tool for a hassle-free swap in under 10 minutes—no tech degree needed. - • **Seamless Compatibility:** Perfectly tailored for Harman Kardon Onyx Studio 1 through 4—keep your sound portable and powerful. - • **Power That Lasts Longer:** Boost your Onyx Studio’s playtime with a 3500mAh battery that outperforms the original. - • **Engineered for Durability:** Foam cushioning and reinforced cable protect your battery connection from wear and tear. ## Overview The Rapthor Rechargeable 3500mAh Lithium Battery is a premium replacement power source designed specifically for Harman Kardon Onyx Studio 1-4 wireless Bluetooth speakers. It offers higher capacity than the original battery, ensuring extended playback time. Installation is streamlined with included tools, while protective features like foam cushioning and a built-in safety circuit guarantee durability and safe operation. This battery revives your speaker’s portability and performance with reliable, long-lasting power. ## Features - 3500mAh High Capacity Lithium Battery: higher capacity than the original battery, more durable performance. - EASY TO USE - Simply install quickly with included screwdriver and plastic tool. - CONSIDERATE DETAILS - Foam strip to absorb the cushion, durable and longer than the original battery cable for better connection, the sponge tape protects the connector cable well from damage. - Safe Performance The built-in protection circuit protects the rechargeable battery well from overcharge, over discharge, short circuit. - Compatibility: Compatible with Harman Kardon Onyx Studio, Onyx Studio 2, Onyx Studio 3, Onyx Studio 4. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B099NJVQQ7 | | Amperage | 3500 Milliamps | | Best Sellers Rank | #62,841 in Electronics ( See Top 100 in Electronics ) #1,324 in Portable Bluetooth Speakers | | Brand | rapthor | | Built-In Media | Install tool, Replacement battery, Screwdriver | | Color | black | | Compatible Devices | Compatible with Harman Kardon Onyx Studio 1/2/3/4 | | Compatible Phone Models | Compatible with Harman Kardon Onyx Studio 1/2/3/4 | | Compatible Power Plug Type | No Plug | | Compatible devices | Compatible with Harman Kardon Onyx Studio 1/2/3/4 | | Compatible phone models | Compatible with Harman Kardon Onyx Studio 1/2/3/4 | | Connectivity Technology | Bluetooth | | Connector Type | Proprietary | | Connector type | Proprietary | | Current | DC | | Current Rating | 3500 Milliamps | | Customer Package Type | Standard Packaging | | Customer Reviews | 4.5 out of 5 stars 313 Reviews | | Enclosure Material | Lithium-ion | | Included components | Install tool, Replacement battery, Screwdriver | | Input Voltage | 3.7 Volts | | Item Weight | 0.11 Kilograms | | Manufacturer | MSW (Shenzhen) Technology Limited | | Model Name | Replacement Battery | | Number of Items | 1 | | Number of Power Levels | 1 | | Output Current | 3.5 Amps | | Output Voltage | 3.7 Volts | | Portable | Yes | | Power Plug | No Plug | | Power Source | Battery Powered | | Special Features | Rechargeable | | Special features | Rechargeable | | Specification Met | Li-ion Battery Standard, Higher Capacity, Easy to Install, Safe Performance | | UPC | 735818080479 | | Unit Count | 1.0 Count | | Voltage | 3.7 Volts | | Wattage | 12.95 watts | | Wired Charging Connector Type | USB Type A | ## Product Details - **Brand:** rapthor - **Colour:** black - **Compatible devices:** Compatible with Harman Kardon Onyx Studio 1/2/3/4 - **Compatible phone models:** Compatible with Harman Kardon Onyx Studio 1/2/3/4 - **Connector type:** wireless - **Included components:** Install tool, Replacement battery, Screwdriver - **Input voltage:** 3.7 Volts - **Number of Items:** 1 - **Special features:** Rechargeable - **Wattage:** 12.95 watts ## Images ![Rechargeable 3500mAh Lithium Battery Compatible with Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker - Image 1](https://m.media-amazon.com/images/I/716QlRKgC-L.jpg) ## Questions & Answers **Q: Any feedback after using it for a while?** A: Sorry charged after it arrived and haven’t used it. So I don’t know how long it holds a charge ## Frequently Bought Together - Rapthor 3500mAh Rechargeable Replacement Battery Compatible with Harman Kardon Onyx Studio 1/2/3/4 Wireless Bluetooth Speaker - for Harman Kardon Charger Onyx Studio 8 7 6 5 4 3 2 1 Wireless Bluetooth Speaker Replacement Harmon Kardon Charger 19V AC Power Cord Supply【10 FT】 VHBW - Charger for Harman Kardon Onyx Studio 8 7 6 5 4 3 2 1 Wireless Bluetooth Portable Speaker Compatible with Harman Kardon Charger 19V 38W AC Charger Fast Replacement Power Adapter --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sc/products/406102328-rechargeable-3500mah-lithium-battery-compatible-with-harman-kardon-onyx-studio](https://www.desertcart.sc/products/406102328-rechargeable-3500mah-lithium-battery-compatible-with-harman-kardon-onyx-studio) --- *Product available on Desertcart Seychelles* *Store origin: SC* *Last updated: 2026-08-20*