--- product_id: 628301206 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: "€ 33.47" currency: EUR in_stock: true category: "Hxjnldc" url: https://www.desertcart.pt/products/628301206-dc-3-7v-4200mah-606090-rechargeable-lithium-polymer-battery-suitable store_origin: PT region: Portugal --- # 4A max discharge current 4200mAh high capacity Built-in multi-protection IC 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:** € 33.47 **Availability:** ✅ In Stock ## Summary > 🔋 Power up your passion projects with smart, safe, and sleek energy! ## 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?** € 33.47 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/628301206-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 - • **Sleek & Compact Design:** Slim 606090 form factor (92×60×6mm) fits seamlessly into your custom builds - • **Plug & Play Flexibility:** Built-in 2-wire replacement with heat-shrink sleeve for easy, secure connections - • **Reliable & Ready for Action:** Supports up to 4A current, perfect for steady power without overheating - • **Safe & Smart Battery Management:** Japanese Seiko IC safeguards against overcharge, overdischarge, and short circuits - • **Power Your DIY Projects with Confidence:** Robust 4200mAh capacity fuels your 3.7-5V electronics all day long ## Overview The DC 3.7V 4200mAh 606090 Rechargeable Lithium Polymer Battery offers a high-capacity, compact power source ideal for DIY electronics operating between 3.7-5V. Featuring a built-in 2-wire replacement system and advanced Japanese Seiko IC protection, it ensures safe, reliable performance with up to 4A discharge current. Its slim profile and durable silicone cables make it a versatile choice for hobbyists seeking dependable energy solutions. ## Description Buy 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 online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase. ## Features - This battery is suitable for DIY electronic products with 3.7-5V and less than 15.54Wh 4200mAh built-in 2-wire battery replacement.（★ Not applicable to high-power electric tools and model aircraft） - Please note that the specifications and polarity of the connector are based on the product display image,★the red wire is the positive "+" and the black wire is the negative "-"，Do not reverse-charge or reverse-connectreverse. ★The primary battery of some products has no plug or mismatched plug or mismatched polarity. It doesn't matter, you can cut and solder the plug directly or use our heat shrinkable insulating sleeve to connect the same color wire. - ★606090 rechargeable lithium ion polymer battery, nominal voltage 3.7V, full charge voltage 4.2V, capacity 4200mAh, power 15.54Wh, size 92×60×6mm(3.543 x 2.362 x 0.236inch) (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. - If there are any quality issues within a year, ★please feel free to contact us via email for replacement. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B095BP7V1D | | Amperage | 4 Amps | | Antenna Location | Protection | | Battery Capacity | 4200 Milliamp Hours | | Battery Cell Type | Lithium Polymer | | Battery Weight | 75 Grams | | Best Sellers Rank | #12,461 in Electronics ( See Top 100 in Electronics ) #121 in Rechargeable Household Batteries | | Brand | HXJNLDC | | Country of Origin | China | | Customer Reviews | 4.4 4.4 out of 5 stars (97) | | Item Dimensions | 9.1 x 6 x 0.6 centimeters | | Item Weight | 84 Grams | | Manufacturer | HXJNLDC | | Model Number | 606090 | | Number of Batteries | 1 Lithium Polymer batteries required. (included) | | Reusability | Rechargeable | | UPC | 717664364262 | | Unit Count | 1 Count | | Voltage | 3.7 Volts (DC) | | Warranty Description | 1 | ## Product Details - **Battery capacity:** 4200 Milliamp Hours - **Battery cell composition:** Lithium Polymer - **Brand:** HXJNLDC - **Number of batteries:** 1 Lithium Polymer batteries required. (included) - **Recommended uses for product:** Protection ## 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/61ZzZsP8YaL.jpg) ## 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.pt/products/628301206-dc-3-7v-4200mah-606090-rechargeable-lithium-polymer-battery-suitable](https://www.desertcart.pt/products/628301206-dc-3-7v-4200mah-606090-rechargeable-lithium-polymer-battery-suitable) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-25*