---
product_id: 244034199
title: "EEMB Lithium Polymer battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery Pack with wire JST Connector-confirm device & connector polarity before purchase"
brand: "eemb"
price: "€ 14.11"
currency: EUR
in_stock: true
reviews_count: 8
category: "Eemb"
url: https://www.desertcart.pt/products/244034199-eemb-lithium-polymer-battery-3-7v-1100mah-603449-lipo-rechargeable
store_origin: PT
region: Portugal
---

# 3.7V stable voltage 1100mAh high capacity PCM protection for safety EEMB Lithium Polymer battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery Pack with wire JST Connector-confirm device & connector polarity before purchase

**Brand:** eemb
**Price:** € 14.11
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up smart, stay connected longer!

## Quick Answers

- **What is this?** EEMB Lithium Polymer battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery Pack with wire JST Connector-confirm device & connector polarity before purchase by eemb
- **How much does it cost?** € 14.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/244034199-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

- • **Safety First, Always:** Built-in PCM protection guards against overcharge, over-discharge, short circuits, and overcurrent for peace of mind.
- • **Lightweight & Portable:** At just 22g, this lithium polymer battery packs power without bulk—perfect for on-the-go professionals.
- • **Power Your Devices Longer:** 1100mAh capacity ensures extended usage for your Bluetooth speakers, GPS, and smart home gadgets.
- • **Certified Quality Assurance:** UN 38.3 and UL certifications guarantee reliability and compliance for your critical electronics.
- • **Precision Fit & Compatibility:** Exact 34.5x51x6.3mm size with specific connector polarity—no universal compromises, avoid costly mismatches.

## Overview

The EEMB 603449 lithium polymer battery delivers a reliable 3.7V and 1100mAh capacity in a compact 34.5x51x6.3mm form factor. Designed with precise connector polarity and PCM safety features, it’s UL and UN 38.3 certified, making it an ideal replacement battery for Bluetooth speakers, GPS devices, smart home systems, and more. Lightweight at 22g, it offers long cycle life and dependable performance for the tech-savvy professional.

## Description

Free delivery and returns on eligible orders. Buy EEMB Lithium Polymer battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery Pack with wire JST Connector-confirm device & connector polarity before purchase at desertcart UK.

Review: Works well - works great and good value
Review: Great replacement battery. - Great replacement of the battery in an old car hands free Bluetooth speaker found in storage after years which was no longer charging or powering up. Had to snip away the wire connector plug to allow for direct soldering to circuit board but this was straight forward using snips. The battery arrived precharged at 70% level confirmed once connected to Bluetooth and offers a higher maH to the OEM battery replaced. Size and fit are great as expected.

## 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: MAX 34.5 x MAX 51 x MAX 6.3mm (WxLxH)
- 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. More than 400 EEMB batteries are UL certified. Search "MH20555" on UL for all EEMB UL certification information.//QUALITY SERVICE— Please contact us if you have any questions or concerns with the product via desertcart message.
- STORAGE/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 enabled smart home systems, PDA and digital cameras, GPS,monitoring units, e-books, tracking devices, sleep management equipment, blood oxygen tracking equipment, pulse monitors,wireless, IoT.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08FD39Y5R |
| Amperage | 22 Amps |
| Antenna Location | Acaia scale, Arduino Board, Bluetooth speaker, Corsair HS70, ESP32, Garmin Nuvi 880 GPS, Parrot car speakerphone, Radar alarm, Radio, Wimius system, Wireless mechanical keyboard |
| Battery Capacity | 1100 Milliampere Hour (mAh) |
| Battery Cell Type | Lithium Polymer |
| Battery Weight | 22 Grams |
| Battery capacity | 1100 Milliampere Hour (mAh) |
| Battery cell composition | Lithium Polymer |
| Best Sellers Rank | 2,602 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 74 in Rechargeable Household Batteries |
| Brand | EEMB |
| Brand Name | EEMB |
| Country of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 1,338 Reviews |
| Item Dimensions | 34 x 51 x 6 millimetres |
| Item Weight | 0.03 Kilograms |
| Manufacturer | EEMB Co.,Ltd |
| Model Name | LP603449 |
| Model Number | LP603449-PCM |
| Number of Batteries | 1 Lithium Polymer batteries required. (included) |
| Number of batteries | 1 Lithium Polymer batteries required. (included) |
| Recommended uses for product | Acaia scale, Arduino Board, Bluetooth speaker, Corsair HS70, ESP32, Garmin Nuvi 880 GPS, Parrot car speakerphone, Radar alarm, Radio, Wimius system, Wireless mechanical keyboard Recommended uses for product Acaia scale, Arduino Board, Bluetooth speaker, Corsair HS70, ESP32, Garmin Nuvi 880 GPS, Parrot car speakerphone, Radar alarm, Radio, Wimius system, Wireless mechanical keyboard See more |
| Reusability | Rechargeable |
| Unit Count | 1.0 Count |
| Unit count | 1.0 Count |
| Voltage | 3.7 Volts |

## Product Details

- **Battery capacity:** 1100 Milliampere Hour (mAh)
- **Battery cell composition:** Lithium Polymer
- **Brand:** EEMB
- **Number of batteries:** 1 Lithium Polymer batteries required. (included)

## Images

![EEMB Lithium Polymer battery 3.7V 1100mAh 603449 Lipo Rechargeable Battery Pack with wire JST Connector-confirm device & connector polarity before purchase - Image 1](https://m.media-amazon.com/images/I/61G3iBkm0AL.jpg)

## Available Options

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

## Questions & Answers

**Q: Is the contact labelled t useful for an ntc thermistor wire?**
A: Not seen a contact T

**Q: will this fit a  sena 20s, & is it just a case of swapping the connectors on the battery to match the polarity on the system board (no soldiering need**
A: Not sure, but Google shows that Sena 20s is using 2540 battery (25x40x7.5 mm) . This one may be too big. You need to measure the space first.

**Q: What is the connector? i bought this and the jst connector does not fit the jst connectors i have, so what is that connector ???**
A: It is JST PH (2mm pitch).  There is 12 types of JST connectors listed on Wiki.

**Q: Can i cut the connection off so i can solder it to a circuit? if so which do i cut first?**
A: Cut one connection at a time, do NOT cut through both at the same time…
if you short them together they may weld together and then proceed to burn.
If you do cause a fire don’t use water, use sand, dry soil to smother the battery.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well
*by T***H on 12 February 2026*

works great and good value

### ⭐⭐⭐⭐⭐ Great replacement battery.
*by A***D on 27 January 2026*

Great replacement of the battery in an old car hands free Bluetooth speaker found in storage after years which was no longer charging or powering up. Had to snip away the wire connector plug to allow for direct soldering to circuit board but this was straight forward using snips. The battery arrived precharged at 70% level confirmed once connected to Bluetooth and offers a higher maH to the OEM battery replaced. Size and fit are great as expected.

### ⭐⭐⭐⭐ Does not fit Acaia scales as descrbed
*by J***Y on 13 February 2025*

Bought this as the specs matched the battery in my Acaia coffee scales and the description said it was suitable for them, but the connector is the wrong size; the Acaia use a smaller connector. I swapped the connector over from the old battery was a bit of a hassle. Otherwise the battery seems good, no issues with it so far. A relatively cheap way to get your scales working again.

## Frequently Bought Together

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-15*