---
product_id: 732781005
title: "1 X EEMB 3.7v Rechargeable Lithium Ion Battery Li-Polymer Battery 1100mAh 603449 JST Connector with Lipo Rechargeable Battery Pack - Check the polarity of your device and connector before purchase"
brand: "eemb"
price: "4.14 OMR"
currency: OMR
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.om/products/732781005-1-x-eemb-3-7v-rechargeable-lithium-ion-battery-li
store_origin: OM
region: Oman
---

# 3.7V nominal voltage 1100mAh high capacity JST connector precision 1 X EEMB 3.7v Rechargeable Lithium Ion Battery Li-Polymer Battery 1100mAh 603449 JST Connector with Lipo Rechargeable Battery Pack - Check the polarity of your device and connector before purchase

**Brand:** eemb
**Price:** 4.14 OMR
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your essentials with precision and peace of mind!

## Quick Answers

- **What is this?** 1 X EEMB 3.7v Rechargeable Lithium Ion Battery Li-Polymer Battery 1100mAh 603449 JST Connector with Lipo Rechargeable Battery Pack - Check the polarity of your device and connector before purchase by eemb
- **How much does it cost?** 4.14 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/732781005-1-x-eemb-3-7v-rechargeable-lithium-ion-battery-li)

## 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

- • **Safety First:** Built-in PCM protection guards against overcharge, short circuits, and overheating for worry-free use.
- • **Power That Lasts:** 1100mAh capacity fuels your devices longer, so you stay unplugged and unstoppable.
- • **Certified Reliability:** UN 38.3 and UL listed credentials mean this battery meets rigorous safety and quality standards.
- • **Compact & Lightweight:** Slim 34.5x50x6.3mm design at just 22g fits discreetly in your Bluetooth headset or dash cam.
- • **Precision Fit Connector:** JST connector ensures seamless compatibility—no guesswork, just perfect power delivery.

## Overview

The EEMB 3.7V 1100mAh Li-Polymer rechargeable battery pack features a compact 603449 JST connector, built-in protective circuits, and industry certifications (UN 38.3, UL). Designed for Bluetooth headsets and dash cams, it offers reliable, safe, and long-lasting power in a lightweight form factor.

## Description

Keep out of reach of children to avoid infants swallowing. Do not place in high temperature or near fire. Do not throw batteries or put them in a humid environment. Please do not contact the positive and negative poles of the battery with the metal. Please keep the battery capacity at least 50% if you store the battery for a long time. Please charge and discharge about 0.2C once every three months. If the battery voltage is low, please charge it until it is 3.7-4V.

## Features

- Please make sure the battery pack connector and device polarity match before purchasing--1. Battery size; 2. Connector model; 3. Connector size; 4. Connector polarity - This is not universal!!! (If the polarity of the battery connector does not match the device, it may cause a short circuit. )
- Basic Information -1.1Ah, Nominal Voltage 3.7V. Weight 22g Comes with protective circuits to prevent charging and overcurrent. Battery Size: 1.3 x 2.0 x 0.2 inches (34.5 x 50 x 6.3 mm) Lead Wire Length: 2.0 inches (50 ± 3 mm) Please see the image for design drawing
- RELIABLE PERFORMANCE - No leaks, excellent cost performance and long cycle life. PCM Protection Function: Over-charge, over-discharge, over-current, short circuit protection, overheating protection
- Certifications – UN 38.3 compliant. Over 400 EEMB batteries are UL listed. For all EEMB UL credentials search "MH20555" in UL We will reply you within 24 hours
- Storage and Application - Keeps cells charged 40% to 60% during long term storage. It is recommended to charge the battery every 3 months after receiving the battery and maintain the voltage of 3.7-4.0V. Please store the battery in a cool dry place. // Bluetooth Speaker, Drive Recorder

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Compatible Devices | Bluetooth Headset, Dash Cam |
| Batteries Included | Yes |
| Batteries Required | Yes |
| Brand | EEMB |
| Manufacturer | EEMB Co.,Ltd |
| Item Model Number | LP603449-PCM |
| Special Features | Includes JST connector, Lipo rechargeable battery pack |
| Size | 1 |
| Product Dimensions | 3.45 x 5.1 x 0.63 cm; 30 g |
| Item Weight | 0.03 Kilograms |

## Product Details

- **Number of Batteries:** 1 Lithium Polymer batteries required. (included)
- **Brand:** EEMB
- **Battery Cell Composition:** Lithium Ion
- **Battery Capacity:** 1100 Milliamp Hours
- **Recommended Uses For Product:** Camera, GPS, Tablet, Watch

## Images

![1 X EEMB 3.7v Rechargeable Lithium Ion Battery Li-Polymer Battery 1100mAh 603449 JST Connector with Lipo Rechargeable Battery Pack - Check the polarity of your device and connector before purchase - Image 1](https://m.media-amazon.com/images/I/61G3iBkm0AL.jpg)
![1 X EEMB 3.7v Rechargeable Lithium Ion Battery Li-Polymer Battery 1100mAh 603449 JST Connector with Lipo Rechargeable Battery Pack - Check the polarity of your device and connector before purchase - Image 2](https://m.media-amazon.com/images/I/71c12SUI7eL.jpg)
![1 X EEMB 3.7v Rechargeable Lithium Ion Battery Li-Polymer Battery 1100mAh 603449 JST Connector with Lipo Rechargeable Battery Pack - Check the polarity of your device and connector before purchase - Image 3](https://m.media-amazon.com/images/I/61lymxlfKTL.jpg)
![1 X EEMB 3.7v Rechargeable Lithium Ion Battery Li-Polymer Battery 1100mAh 603449 JST Connector with Lipo Rechargeable Battery Pack - Check the polarity of your device and connector before purchase - Image 4](https://m.media-amazon.com/images/I/71ZVPBH+WcL.jpg)
![1 X EEMB 3.7v Rechargeable Lithium Ion Battery Li-Polymer Battery 1100mAh 603449 JST Connector with Lipo Rechargeable Battery Pack - Check the polarity of your device and connector before purchase - Image 5](https://m.media-amazon.com/images/I/61O1OF1w8ZL.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

### ⭐⭐⭐⭐⭐ とりあえず交換後の動作確認は問題ない
*by フ***ト on May 9, 2025*

ソニーのサラウンドヘッドホン MDR-DS7500のバッテリーを交換するために注文。純正よりは容量(1260mah)減るけど83%程度だし、使用時間よりバッテリー状態を危惧してた。使用にも充電にも今のところ問題ない。ちょっと様子見で、ほかの２台分も交換用バッテリーをリピートしようと思う。5月13日追記満充電を試みるも急発熱して、充電異常らしき不具合発生。充電池内部の活性化が足りないのかもだけど、なんだか不安に感じる。5月14日追記やはり熱問題なのか、途中で充電が止まってしまう。適合しないのか、充電しようが合わないのかはわからないのでもう少し様子見ながら今後を決めたい。

### ⭐⭐⭐⭐⭐ コスパ最高です。
*by H***I on April 11, 2025*

30年前のレーダー探知機のバッテリー交換しました。よみがえりました。±の変換作業は行いました。

### ⭐⭐⭐⭐ 予定通り
*by ト***－ on November 21, 2024*

サイズが希望と合致し20年前の機種が生き返りました。

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.com.om/products/732781005-1-x-eemb-3-7v-rechargeable-lithium-ion-battery-li](https://www.desertcart.com.om/products/732781005-1-x-eemb-3-7v-rechargeable-lithium-ion-battery-li)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-01-31*