---
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: "€ 38.22"
currency: EUR
in_stock: true
url: https://www.desertcart.es/products/628301213-dc-3-7v-3000mah-103665-rechargeable-lithium-polymer-battery-suitable
store_origin: ES
region: Spain
---

# 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:** € 38.22
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up your creativity with safe, sleek, and smart energy!

## 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?** € 38.22 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/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

- • **Compact Yet Mighty:** Slim 66×36×10mm design fits seamlessly into your custom builds
- • **Safety First, Always:** Integrated Japanese Seiko IC protects against overcharge, overdischarge, and short circuits
- • **Plug & Play Flexibility:** Includes 2-wire JST 2.0mm connector and heat shrink sleeve for easy installation or soldering
- • **Lightweight for Portability:** Only 47.4g—perfect for handheld and portable electronics without bulk
- • **Power Your DIY Projects with Confidence:** Reliable 3.7V, 3000mAh capacity for sustained performance

## Overview

This 3.7V 3000mAh rechargeable lithium polymer battery delivers a robust 11.1Wh power output with a maximum 3A current, ideal for DIY electronics operating under 5V. Featuring a compact 66×36×10mm form factor and weighing just 47.4g, it includes a built-in Japanese Seiko IC for comprehensive protection against overcharge, overdischarge, overcurrent, and short circuits. The package comes with a 2-wire JST 2.0mm connector and heat shrinkable insulating sleeve, ensuring easy and safe battery replacement for your custom projects.

## Description

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

## 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 |
|---------------|-------|
| Antenna Location | Power Tool, Watch, GPS |
| Item Weight | 51 Grams |
| Battery Weight | 47.3 Grams |
| Item Dimensions | 2.6 x 1.42 x 0.39 inches |
| Unit Count | 1 Count |
| Battery Cell Type | Lithium Polymer |
| Amperage | 3 Amps |
| Battery Capacity | 3000 Milliamp Hours |
| Reusability | Rechargeable |
| Voltage | 3.7 Volts (DC) |

## Product Details

- **Number of batteries:** 1 Lithium Polymer batteries required. (included)
- **Brand:** HXJNLDC
- **Battery cell composition:** Lithium Polymer
- **Battery capacity:** 3000 Milliamp Hours
- **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)

## Frequently Bought Together

- HXJNLDC DC 3.7V 3000mAh 103665 Rechargeable Lithium Polymer Replacement Battery for DIY 3.7-5V Electronic Product, Mobile Energy Storage Power Supply
- MakerFocus 10pcs TP4056 Charging Module with Battery Protection 186 50 BMS 5V Micro USB 1A 186 50 Lithium Battery Charging Board
- elechawk 10pcs Upgraded Tiny Whoop JST-PH 2.0 Male and Female Connector Cable for Battery JJRC H36 H67 Blade Inductrix E010 E013

---

## 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.es/products/628301213-dc-3-7v-3000mah-103665-rechargeable-lithium-polymer-battery-suitable](https://www.desertcart.es/products/628301213-dc-3-7v-3000mah-103665-rechargeable-lithium-polymer-battery-suitable)

---

*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-01-22*