---
product_id: 282474582
title: "EEMB Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery with Wire JST 2.0mm Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase"
brand: "eemb"
price: "148 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Eemb"
url: https://www.desertcart.dk/products/282474582-eemb-lithium-polymer-battery-3-7v-1100mah-603449-lipo-rechargeable
store_origin: DK
region: Denmark
---

# 3.7V stable voltage 1100mAh high capacity JST 2.0mm connector precision EEMB Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery with Wire JST 2.0mm Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase

**Brand:** eemb
**Price:** 148 kr
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your lifestyle with precision and reliability—never settle for less!

## Quick Answers

- **What is this?** EEMB Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery with Wire JST 2.0mm Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase by eemb
- **How much does it cost?** 148 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/282474582-eemb-lithium-polymer-battery-3-7v-1100mah-603449-lipo-rechargeable)

## Best For

- eemb enthusiasts

## Why This Product

- Trusted eemb brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built-In Safety:** PCM protection guards against overcharge, discharge, short circuit—peace of mind included.
- • **Power That Lasts:** 1100mAh capacity keeps your devices running longer—no mid-use scramble.
- • **Lightweight & Compact:** Only 22g and slim 6.3mm height—perfect for sleek, portable tech.
- • **Precision Fit Connector:** JST 2.0mm plug ensures seamless compatibility—double-check polarity to avoid mishaps.
- • **Versatile Compatibility:** Ideal for Bluetooth speakers, smart home devices, GPS, and more—future-proof your gear.

## Overview

The EEMB Lithium Polymer Battery delivers a reliable 3.7V and 1100mAh capacity in a compact 34.5x51x6.3mm form factor. Featuring a JST 2.0mm connector with strict polarity requirements, it offers built-in PCM safety protections and is perfect for powering Bluetooth speakers, wireless devices, and IoT gadgets. Lightweight at 22g, it combines long cycle life with certified quality, making it a smart, dependable replacement battery for professionals who demand performance and peace of mind.

## Description

Buy EEMB Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery with Wire JST 2.0mm Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase: 3.7V - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: good replacement battery. - I used this in a ultra-light flashlight I designed for my drone. I picked up some tiny single cell charger boards with built in low voltage cut-off to make a tiny battery pack. Worked like a champ!
Review: Last twice as long as original battery. - I swapped this battery in place of the OEM unit and I’m genuinely impressed — it works well, and it stays charged significantly longer than what I had before. The build feels solid, the voltage holds steady, and it gives me peace of mind that I won’t be scrambling for a recharge mid-use. If you’re looking for a dependable replacement that punches above its pricing tier, this one’s a great pick.

## Features

- Make Sure Device Polarity Matches with Battery Pack Connector Before Purchase-1.Battery Size; 2.Connector Model; 3.Connector Size; 4.Connector Polarity - This is not universal(It will cause a shortage if the polarity of the battery connector does not match your device.)
- Basic Info—Voltage: 3.7V; Typical capacity: 1100mAh, Min capacity: 1000mAh; Weight: approximate 22g; Size: 34.5 x 51 x 6.3mm (WxLxH). And the connector model of our battery is JSH-PHR-02. The distance between positive and negative poles is 2mm and the width of the whole plug is 5.8 mm.
- Reliable Performance—No leaking, excellent cost performance and long cycle life. PCM protection function: over charge, over discharge, over current, short circuit protection.
- Certifications—UN 38.3 compliant. Quality Service— Please contact us if you have any questions or concerns with the product via desertcart message. We will respond to you within 24 hours.
- Storage and Application—Keep the cells in 40%-60% charged state during long period storage. We recommend to charge the battery every 3 months after receipt of the battery and maintain the voltage 3.7-4.0V. Store battery in cool and dry place. Suitable for Bluetooth speaker, dash cam, keyboard and mouse, Wi-Fi smart home systems, PDA and digital cameras, GPS, monitoring units, e-books, tracking devices, blood oxygen tracking equipment, pulse monitors, wireless, IoT.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08FD39Y5R |
| Amperage | 22 Amps |
| Antenna Location | Alarm, Arduino Board, Bluetooth speaker, Camera, GPS, LED Light, Radio, Remote controller, Wireless headphones, Wireless keyboard, micro controller |
| Battery Capacity | 1100 Milliamp Hours |
| Battery Cell Composition | Lithium Polymer |
| Battery Cell Type | Lithium Polymer |
| Battery Weight | 22 Grams |
| Best Sellers Rank | #77,423 in Health & Household ( See Top 100 in Health & Household ) #68 in 3.7V Batteries |
| Brand | EEMB |
| Customer Reviews | 4.3 out of 5 stars 1,299 Reviews |
| Item Dimensions | 1.36 x 2.01 x 0.25 inches |
| Item Height | 6.3 millimeters |
| Item Weight | 0.03 Kilograms |
| Manufacturer | EEMB Co.,Ltd |
| Model Name | LP603449 with JST PHR 2.0mm Connector |
| Model Number | LP603449-PCM |
| Number of Batteries | 1 Lithium Polymer batteries required. (included) |
| Recommended Uses For Product | Alarm, Arduino Board, Bluetooth speaker, Camera, GPS, LED Light, Radio, Remote controller, Wireless headphones, Wireless keyboard, micro controller Recommended Uses For Product Alarm, Arduino Board, Bluetooth speaker, Camera, GPS, LED Light, Radio, Remote controller, Wireless headphones, Wireless keyboard, micro controller See more |
| Reusability | Rechargeable |
| Unit Count | 1 Count |
| Voltage | 3.7 Volts |

## Product Details

- **Number of Batteries:** 1 Lithium Polymer batteries required. (included)
- **Brand:** EEMB
- **Battery Cell Composition:** Lithium Polymer
- **Battery Capacity:** 1100 Milliamp Hours
- **Recommended Uses For Product:** Alarm, Arduino Board, Bluetooth speaker, Camera, GPS, LED Light, Radio, Remote controller, Wireless headphones, Wireless keyboard, micro controller

## Images

![EEMB Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery with Wire JST 2.0mm Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase - Image 1](https://m.media-amazon.com/images/I/61G3iBkm0AL.jpg)
![EEMB Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery with Wire JST 2.0mm Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase - Image 2](https://m.media-amazon.com/images/I/61O1OF1w8ZL.jpg)
![EEMB Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery with Wire JST 2.0mm Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase - Image 3](https://m.media-amazon.com/images/I/61lymxlfKTL.jpg)
![EEMB Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery with Wire JST 2.0mm Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase - Image 4](https://m.media-amazon.com/images/I/61m55QL3-VL.jpg)
![EEMB Lithium Polymer Battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery with Wire JST 2.0mm Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase - Image 5](https://m.media-amazon.com/images/I/71ZVPBH+WcL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: The box clearly states non rechargeable, are these actually rechargeable?!?!**
A: I didn’t pay attention to my box but yes they are rechargeable.

**Q: what's the shut off voltage?**
A: 4.2 volts

**Q: is the polarity of the connector reversed?**
A: The polarity of the connector battery side is as you see it.
Red(+) Black(-).... However... I have seen instances were the polarity of the pins on the equipment side has been reversed.
A pain.  You will have to verify the circuit diagram that you are connecting the battery to.

**Q: Can it be used on 3 wire equipment? how to connect if yes? i am trying to use it on logitech mx master mouse.**
A: 3 wire Lipo's have balancing tech/ability.  These two wire batteries are not setup for that.

## Customer Reviews

### ⭐⭐⭐⭐⭐ good replacement battery.
*by W***G on December 24, 2025*

I used this in a ultra-light flashlight I designed for my drone. I picked up some tiny single cell charger boards with built in low voltage cut-off to make a tiny battery pack. Worked like a champ!

### ⭐⭐⭐⭐⭐ Last twice as long as original battery.
*by T***L on October 30, 2025*

I swapped this battery in place of the OEM unit and I’m genuinely impressed — it works well, and it stays charged significantly longer than what I had before. The build feels solid, the voltage holds steady, and it gives me peace of mind that I won’t be scrambling for a recharge mid-use. If you’re looking for a dependable replacement that punches above its pricing tier, this one’s a great pick.

### ⭐⭐⭐⭐⭐ Actually 1100mAh as it is rated!
*by P***Y on May 2, 2023*

I used this to replace a battery in my Sony Dualshock 3 controller for my PS3. I needed a battery and didnt want the standard size official Sony battery as theyre very small, in the order of 500 mAh or so. I installed this and it fired right up even without charging it which is a good sign. It takes twice as long to charge the controller now, but it lasts seemingly forever now. ive used it daily for almost 2 weeks now and it still says I have 2/3 charge. I would highly recommend this battery to anyone looking to do the same mod. It fit in the old battery spot perfectly fine, but I did place a bit of foam between the motherboard and battery to keep the solder points from poking the battery body.

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-22*