---
product_id: 389036350
title: "DC 3.7V 4200mah 606090 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Products with Built-in 2-Wire Battery Replacement, Mobile Energy Storage Power Supply."
brand: "hxjnldc"
price: "14406 Ft"
currency: HUF
in_stock: true
url: https://www.desertcart.hu/products/389036350-dc-3-7v-4200mah-606090-rechargeable-lithium-polymer-replacement-battery
store_origin: HU
region: Hungary
---

# 3.7V nominal voltage 4200mAh capacity Overcharge protection DC 3.7V 4200mah 606090 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Products with Built-in 2-Wire Battery Replacement, Mobile Energy Storage Power Supply.

**Brand:** hxjnldc
**Price:** 14406 Ft
**Availability:** ✅ In Stock

## Summary

> 🔧 Power Your Passion with Precision!

## Quick Answers

- **What is this?** DC 3.7V 4200mah 606090 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Products with Built-in 2-Wire Battery Replacement, Mobile Energy Storage Power Supply. by hxjnldc
- **How much does it cost?** 14406 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/389036350-dc-3-7v-4200mah-606090-rechargeable-lithium-polymer-replacement-battery)

## 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 heat shrinkable insulating sleeves for a seamless fit.
- • **Safety First:** Equipped with advanced protection against overcharge, overdischarge, and short circuits.
- • **Compact & Lightweight:** Perfectly sized at 3.54 x 2.36 x 0.24 inches and weighing only 84g for easy integration.
- • **Power Up Your Projects:** Unleash the potential of your DIY electronics with a robust 4200mAh battery!
- • **Versatile Compatibility:** Ideal for a range of devices including cameras, radios, and watches.

## Overview

The DC 3.7V 4200mAh 606090 Rechargeable Lithium Polymer Battery is designed for DIY electronic projects requiring a reliable power source. With a nominal voltage of 3.7V and a capacity of 4200mAh, this battery is perfect for devices like cameras and radios. It features advanced safety mechanisms to prevent overcharging and short circuits, ensuring longevity and reliability. Compact and lightweight, it’s easy to integrate into various applications, making it a must-have for tech enthusiasts.

## Description

DC 3.7V 4200mah 606090 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Products with Built-in 2-Wire Battery Replacement, Mobile Energy Storage Power Supply.

## Features

- This battery is applicable to electronic products with DIY 3.7-5V less than 15.54Wh 4200mAh.（★ Not applicable to high-power electric tools and model aircraft）
- ★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, 3302-22 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 are any quality issues within a year, ★please feel free to contact us via email for replacement.

## 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 Replacement Battery for DIY 3.7-5V Electronic Products with Built-in 2-Wire Battery Replacement, Mobile Energy Storage Power Supply. - Image 1](https://m.media-amazon.com/images/I/61vCoJ7fMmL.jpg)

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-05*