---
product_id: 628301213
title: "DC 3.7V 3000mAh 103665 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: "€ 30.66"
currency: EUR
in_stock: true
reviews_count: 5
category: "Hxjnldc"
url: https://www.desertcart.it/products/628301213-dc-3-7v-3000mah-103665-rechargeable-lithium-polymer-battery-suitable
store_origin: IT
region: Italy
---

# 3A max discharge current 3000mAh high capacity Built-in multi-protection IC DC 3.7V 3000mAh 103665 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:** € 30.66
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your creativity with safety and stamina!

## Quick Answers

- **What is this?** DC 3.7V 3000mAh 103665 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?** € 30.66 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/628301213-dc-3-7v-3000mah-103665-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

- • **Advanced Safety Circuitry:** Overcharge, overdischarge, overcurrent, and short circuit protection for peace of mind.
- • **Robust 3A Maximum Current:** Supports steady power delivery for smooth device performance.
- • **Universal 2-Wire Connector:** Easy battery replacement with JST Pitch 2.0mm connector and flexible wiring options.
- • **Compact & Lightweight Design:** Slim 66×36×10mm size and just 47.4g—perfect for sleek, portable electronics.
- • **Power-packed 3000mAh Capacity:** Keep your DIY projects running longer without constant recharges.

## Overview

The DC 3.7V 3000mAh 103665 Rechargeable Lithium Polymer Battery is a compact, high-capacity power source designed for DIY electronic projects operating between 3.7-5V. Featuring a built-in 2-wire JST connector and advanced Japanese Seiko IC protection, it ensures reliable performance with safeguards against overcharge, overdischarge, overcurrent, and short circuits. Lightweight and versatile, it’s ideal for hobbyists seeking a durable, easy-to-install battery solution.

## Description

Buy DC 3.7V 3000mAh 103665 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.

Review: Es mejor de lo que me esperaba
Review: Batteria uguale a quella nel ns. dispositivo, bisogna fare attenzione alla spinetta di collegamento, abbiamo dovuto riutilizzare la nostra vecchia altrimenti + e - (rosso e nero) risultavano invertiti.

## Features

- This battery is suitable for DIY electronic products with 3.7-5V and less than 11.1Wh 3000mAh 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.
- 103665 rechargeable lithium ion polymer battery, nominal voltage 3.7V, full charge voltage 4.2V, capacity 3000mAh, power 11.1Wh, ★size 66×36×10mm(2.6×1.417×0.393inch）(T*W*L), Weight:47.4g(1.676oz)，Maximum current:3A。 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, and genuine JST Pitch 2.0mm ★2 wire connector module.
- If there are any quality issues within a year, ★please feel free to contact us via email for replacement.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B091Y3TW9F |
| Best Sellers Rank | #2,297 in Electronics ( See Top 100 in Electronics ) #31 in Rechargeable Household Batteries |
| Country of origin | China |
| Item model number | 103665 |
| Manufacturer | HXJNLDC |
| Product Dimensions | 6.6 x 3.6 x 1 cm; 51 g |

## Product Details

- **Battery capacity:** 3000 Milliamp Hours
- **Battery cell composition:** Lithium Polymer
- **Brand:** HXJNLDC
- **Number of batteries:** 1 Lithium Polymer batteries required. (included)
- **Recommended uses for product:** Camera, GPS, MP3 Player, Radio, Recorder, Speaker, Toys, Watch

## Images

![DC 3.7V 3000mAh 103665 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/61wvu-m0NbL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***M on 13 March 2024*

Es mejor de lo que me esperaba

### ⭐⭐⭐⭐⭐ Review
*by G***A on 11 February 2022*

Batteria uguale a quella nel ns. dispositivo, bisogna fare attenzione alla spinetta di collegamento, abbiamo dovuto riutilizzare la nostra vecchia altrimenti + e - (rosso e nero) risultavano invertiti.

### ⭐⭐⭐⭐⭐ Review
*by C***N on 11 December 2025*

Pour moi la batterie ete compatible

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-03-01*