--- product_id: 588679833 title: "– DC 3.7V 4200mah 606090 Rechargeable Lithium Polymer Battery, Suitable for DIY 3.7-5V Electronic Products with Built-in 2-Wire Battery Replacement and LED Lights" brand: "hxjnldc" price: "€ 49.46" currency: EUR in_stock: true reviews_count: 1 url: https://www.desertcart.it/products/588679833-dc-3-7v-4200mah-606090-rechargeable-lithium-polymer-battery-suitable store_origin: IT region: Italy --- # 4A max current 4200mAh capacity Overcharge protection – DC 3.7V 4200mah 606090 Rechargeable Lithium Polymer Battery, Suitable for DIY 3.7-5V Electronic Products with Built-in 2-Wire Battery Replacement and LED Lights **Brand:** hxjnldc **Price:** € 49.46 **Availability:** ✅ In Stock ## Summary > 🔋 Power Up Your Life with Confidence! ## Quick Answers - **What is this?** – DC 3.7V 4200mah 606090 Rechargeable Lithium Polymer Battery, Suitable for DIY 3.7-5V Electronic Products with Built-in 2-Wire Battery Replacement and LED Lights by hxjnldc - **How much does it cost?** € 49.46 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/588679833-dc-3-7v-4200mah-606090-rechargeable-lithium-polymer-battery-suitable) ## Best For - hxjnldc enthusiasts ## Why This Product - Trusted hxjnldc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **⚡ Fast Charging:** Experience rapid energy replenishment with a full charge voltage of 4.2V. - • **🔋 Unleash Power:** With a robust 4200mAh capacity, this battery ensures your devices stay powered longer. - • **🛡️ Safety First:** Equipped with advanced protection against overcharge, overdischarge, and short circuits. - • **📦 Hassle-Free Replacement:** Enjoy peace of mind with a one-year quality guarantee and easy installation options. - • **🔌 Versatile Compatibility:** Perfectly compatible with a wide range of devices from gaming headsets to smart home systems. ## Overview The DC 3.7V 4200mAh 606090 rechargeable lithium polymer battery is a versatile power solution designed for a multitude of electronic devices. With a nominal voltage of 3.7V and a maximum current of 4A, it offers reliable performance and safety features, including overcharge and short circuit protection. Its compact size and lightweight design make it ideal for DIY projects and mobile energy storage needs. ## Description DC 3.7V 4200mah 606090 Rechargeable Lithium Polymer Battery, Suitable for DIY 3.7-5V Electronic Products with Built-in 2-Wire Battery Replacement and LED Lights ## Features - ★Compatible： MP4, MP5, Watch, power packs, detectors, recorders, Bluetooth mice, Gaming Headset, speakers, e-books, LED lights, sensor lights, Parking Monitor,Car Driving Recorder， portable DVD, radios, toys,Network Box，USB Fan，Tester，air Purifier,controller，bluetooth speaker, dash cam, keyboard and mouse, Wi-Fi enabled smart home systems, PDA and digital cameras, monitoring units, notebook computers, e-books,telematics,tracking devices, sleep management equipment, blood oxygen - ★606090 rechargeable lithium ion polymer battery, nominal voltage 3.7V, full charge voltage 4.2V, capacity 4200mAh, power 15.54Wh, size 3.543 x 2.362 x 0.236inch(90×60×6mm) (L*W*T), Weight:2.963oz(84g)，Maximum current:4A。 It can prevent overcharge, overdischarge, overcurrent, and short circuit. - ★It‘s consists of of large-capacity A+ lithium battery, Japanese Seiko IC overcharge and overcurrent short circuit protection board, 3302-24 high temperature resistant silicone cable - ★The red wire is the positive electrode “+” and the black wire is the negative pole “-”。In some products, the original battery has no plug or the plug does not match. It doesn't matter. You can directly cut off the plug and weld it or use our heat shrinkable insulating sleeve to connect the wires of the same color. - ★If there is any quality problem within one year, please contact us by email at any time and replace it free of charge. ## Technical Specifications | Specification | Value | |---------------|-------| | Item Dimensions | 3.54 x 2.36 x 0.24 inches | | Item Weight | 80 Grams | | Battery Weight | 75 Grams | | Unit Count | 1.0 Count | | Battery Cell Type | Lithium Polymer | | Recommended Uses For Product | Camera,Digital,Radio,Watch | | Reusability | Rechargeable | | Battery Capacity | 4000 Milliamp Hours | | Amperage | 4 Amps | | Voltage | 3.7 Volts | ## Product Details - **Number of Batteries:** 1 Lithium Polymer batteries required. (included) - **Brand:** HXJNLDC - **Battery Cell Composition:** Lithium Polymer - **Recommended Uses For Product:** Camera,Digital,Radio,Watch - **Unit Count:** 1.0 Count ## Images ![– DC 3.7V 4200mah 606090 Rechargeable Lithium Polymer Battery, Suitable for DIY 3.7-5V Electronic Products with Built-in 2-Wire Battery Replacement and LED Lights - Image 1](https://m.media-amazon.com/images/I/61vCoJ7fMmL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Fitted without problems. *by J***D on Reviewed in the United Kingdom on 1 August 2021* Sony v3 headphones - Fitted without a problem. Slightly bigger dimensions of the battery (accounting for increased capacity over the standard), prove no problem. ## Frequently Bought Together - HXJNLDC DC 3.7V 4200mah 606090 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Product, Mobile Energy Storage Power Supply. - elechawk 10pcs Upgraded Tiny Whoop JST-PH 2.0 Male and Female Connector Cable for Battery JJRC H36 H67 Blade Inductrix E010 E013 - HiLetgo 3pcs TP4056 Type-c USB 5V 1A 18650 Lithium Battery Charger Module Charging Board with Dual Protection Functions --- ## 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.it/products/588679833-dc-3-7v-4200mah-606090-rechargeable-lithium-polymer-battery-suitable](https://www.desertcart.it/products/588679833-dc-3-7v-4200mah-606090-rechargeable-lithium-polymer-battery-suitable) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-05*