---
product_id: 282474582
title: "3.7V Lipo Battery 1100mAh 603449 3.7V Lithium Polymer Battery Rechargeable with Wire JST 2.0mm Connector for Speaker and Dashcam - Confirm Device & Connector Polarity Before Purchase"
brand: "eemb"
price: "A$22"
currency: AUD
in_stock: true
reviews_count: 13
category: "Eemb"
url: https://www.desertcart.com.au/products/282474582-3-7v-lipo-battery-1100mah-603449-3-7v-lithium-polymer
store_origin: AU
region: Australia
---

# 1100mAh Capacity 3.7V Voltage JST 2.0mm Connector 3.7V Lipo Battery 1100mAh 603449 3.7V Lithium Polymer Battery Rechargeable with Wire JST 2.0mm Connector for Speaker and Dashcam - Confirm Device & Connector Polarity Before Purchase

**Brand:** eemb
**Price:** A$22
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your lifestyle with precision and protection—never miss a beat!

## Quick Answers

- **What is this?** 3.7V Lipo Battery 1100mAh 603449 3.7V Lithium Polymer Battery Rechargeable with Wire JST 2.0mm Connector for Speaker and Dashcam - Confirm Device & Connector Polarity Before Purchase by eemb
- **How much does it cost?** A$22 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/282474582-3-7v-lipo-battery-1100mah-603449-3-7v-lithium-polymer)

## 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

- • **Precision Power Fit:** Designed with exact 3.7V voltage and 1100mAh capacity for reliable, long-lasting energy.
- • **Connector Confidence:** Equipped with a JST 2.0mm connector ensuring seamless compatibility—just match polarity to avoid mishaps.
- • **Versatile Powerhouse:** Perfect for Bluetooth speakers, smart home gadgets, dash cams, and all your IoT essentials—stay powered, stay connected.
- • **Lightweight & Compact:** At just 22g and slim 34.5x51x6.3mm size, it fits effortlessly into your sleekest wireless devices.
- • **Built-in Safety Shield:** Advanced PCM protection guards against overcharge, over-discharge, short circuits, and overcurrent for peace of mind.

## Overview

The EEMB Lithium Polymer Battery delivers a dependable 3.7V and 1100mAh capacity in a compact, lightweight design. Featuring a JST 2.0mm connector with strict polarity requirements, it ensures safe, efficient power for a wide range of wireless devices. With built-in PCM safety protections and UN 38.3 certification, this rechargeable battery offers long cycle life and reliable performance, making it an essential upgrade for professionals demanding uninterrupted connectivity.

## 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 |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Best Sellers Rank | #68,175 in Health & Household ( See Top 100 in Health & Household ) #54 in 3.7V Batteries |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,310) |
| Date First Available | December 8, 2020 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.06 ounces |
| Item model number | LP603449-PCM |
| Manufacturer | EEMB Co.,Ltd |
| Product Dimensions | 1.36 x 2.01 x 0.25 inches |

## Product Details

- **Battery Capacity:** 1100 Milliamp Hours
- **Battery Cell Composition:** Lithium Polymer
- **Brand:** EEMB
- **Number of Batteries:** 1 Lithium Polymer batteries required. (included)

## Images

![3.7V Lipo Battery 1100mAh 603449 3.7V Lithium Polymer Battery Rechargeable with Wire JST 2.0mm Connector for Speaker and Dashcam - 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: 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.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.com.au/products/282474582-3-7v-lipo-battery-1100mah-603449-3-7v-lithium-polymer](https://www.desertcart.com.au/products/282474582-3-7v-lipo-battery-1100mah-603449-3-7v-lithium-polymer)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-27*