---
product_id: 629175588
title: "DC 3.7V 2100mAh 804050 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: "KD 8.19"
currency: KWD
in_stock: true
url: https://www.desertcart.com.kw/products/629175588-dc-3-7v-2100mah-804050-rechargeable-lithium-polymer-battery-suitable
store_origin: KW
region: Kuwait
---

# 3.7V nominal voltage 2100mAh capacity Overcharge protection DC 3.7V 2100mAh 804050 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:** KD 8.19
**Availability:** ✅ In Stock

## Summary

> 🔧 Power Your Passion with Precision!

## Quick Answers

- **What is this?** DC 3.7V 2100mAh 804050 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?** KD 8.19 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/629175588-dc-3-7v-2100mah-804050-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

- • **DIY Friendly:** Easily customize connections with included heat shrinkable sleeves.
- • **Safety First:** Equipped with advanced overcharge and short circuit protection.
- • **Compact & Lightweight:** Weighing just 1.16oz, it's perfect for portable applications.
- • **Power Up Your Projects:** Elevate your DIY electronics with a robust 2100mAh capacity!
- • **Versatile Compatibility:** Ideal for a range of devices from Bluetooth headsets to e-books.

## Overview

The HXJNLDC DC 3.7V 2100mAh 804050 lithium-ion polymer battery is a high-capacity, rechargeable power source designed for various DIY electronic projects. With a nominal voltage of 3.7V and built-in safety features, it ensures reliable performance for devices requiring less than 7.77Wh. Its compact size and lightweight design make it an excellent choice for mobile energy storage applications.

## Description

DC 3.7V 2100mAh 804050 Rechargeable Lithium Polymer Battery, Suitable for DIY 3.7-5V Electronic Products with Built-in 2-Wire Battery Replacement and LED Lights

## Features

- 804050 rechargeable lithium ion polymer battery,★ size 2 x 1.574 x 0.314 inch(51×40×8mm) (L*W*T),nominal voltage 3.7V, full charge voltage 4.2V, capacity 2100mAh, power 7.77Wh, Weight:1.16oz(33g)，Maximum current:2.1A。 It can prevent overcharge, overdischarge, overcurrent, and short circuit..
- Please carefully compare the polarity of the connector before use,★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.。
- This battery is applicable to electronic products with DIY 3.7-5V less than 7.77Wh 2100mAh.（ mobile energy storage, power supply, LED light, wireless Bluetooth game headset, outdoor video and audio electronic scale, GPS Watch recorder, e-book, USB Fan tester, dash cam controller, mouse and keyboard）（★Not suitable for power tools and model aircraft）。
- 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, and genuine JST Pitch 2.0mm ★2 wire connector module.。
- 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 |
|---------------|-------|
| Battery Cell Type | Lithium Polymer |
| Recommended Uses For Product | Gps,Radio,Digital,Camera,Watch |
| Item Dimensions | 2.01 x 1.57 x 0.31 inches |
| Item Weight | 38 Grams |
| Battery Weight | 33 Grams |
| Unit Count | 1 Count |
| Reusability | Rechargeable |
| Battery Capacity | 2100 Milliamp Hours |
| Amperage | 2 Amps |
| Voltage | 3.7 Volts (DC) |

## Product Details

- **Number of batteries:** 1 Lithium Polymer batteries required. (included)
- **Brand:** HXJNLDC
- **Battery cell composition:** Lithium Ion
- **Recommended uses for product:** GPS
- **Voltage:** 3.7 Volts (DC)

## Images

![DC 3.7V 2100mAh 804050 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/61cnm3bjbxL.jpg)

## Frequently Bought Together

- HXJNLDC DC 3.7V 2100mAh 804050 li-ion Lithium Ion Polymer Battery Replacement for DIY 3.7-5V Electronic Product, Mobile Energy Storage Power Supply
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**Shop now:** [https://www.desertcart.com.kw/products/629175588-dc-3-7v-2100mah-804050-rechargeable-lithium-polymer-battery-suitable](https://www.desertcart.com.kw/products/629175588-dc-3-7v-2100mah-804050-rechargeable-lithium-polymer-battery-suitable)

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-02-07*