---
product_id: 261693403
title: "EEMB 4PACK Lithium Polymer Battery 3.7V 2000mAh 103454 Lipo Rechargeable Battery Pack with Wire JST Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase"
brand: "eemb"
price: "€ 78.35"
currency: EUR
in_stock: true
reviews_count: 12
category: "Eemb"
url: https://www.desertcart.gr/products/261693403-eemb-4pack-lithium-polymer-battery-3-7v-2000mah-103454-lipo
store_origin: GR
region: Greece
---

# 2000mAh High Capacity 3.7V Voltage Power JST Connector Precision EEMB 4PACK Lithium Polymer Battery 3.7V 2000mAh 103454 Lipo Rechargeable Battery Pack with Wire JST Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase

**Brand:** eemb
**Price:** € 78.35
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your essentials with precision and confidence!

## Quick Answers

- **What is this?** EEMB 4PACK Lithium Polymer Battery 3.7V 2000mAh 103454 Lipo Rechargeable Battery Pack with Wire JST Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase by eemb
- **How much does it cost?** € 78.35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/261693403-eemb-4pack-lithium-polymer-battery-3-7v-2000mah-103454-lipo)

## 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 Fit:** Designed with exact JST connector and polarity to ensure seamless compatibility—no guesswork needed.
- • **Power That Lasts:** Reliable 2000mAh capacity keeps your devices running longer without constant recharging.
- • **Safe & Certified:** UN 38.3 and UL certified with built-in PCM protection against overcharge, discharge, and short circuits.
- • **Compact & Lightweight:** Slim 34.5x56x10.6mm size and just 40g—perfect for sleek, portable tech without bulk.
- • **Eco-Smart Rechargeable:** Rechargeable lithium polymer tech reduces waste and keeps your favorite devices powered sustainably.

## Overview

The EEMB 4PACK Lithium Polymer Battery offers a robust 3.7V and 2000mAh capacity in a compact 34.5x56x10.6mm form factor. Featuring a JST connector with strict polarity requirements, it ensures perfect device compatibility. Certified for safety with UN 38.3 and UL standards, it includes PCM protection for overcharge, discharge, and short circuit. Ideal for Bluetooth speakers, smart home devices, and more, this rechargeable battery pack delivers reliable, long-lasting power for your essential wireless gadgets.

## Description

Product description LP 103454 EEMB BATTERY EEMB is a professional battery manufacturer and battery solution provider since 1995. It's main product line ranges from primary lithium batteries to rechargeable lithium batteries. EEMB's long history has enabled EEMB to be in all key global markets. 3.7v 2000 mAh battery Nominal Capacity & Voltage: 2000 mAh, 3.7 V Standard Charge current: 0.2C (400mA) Charge Max Voltage: 4.200±0.020V Standard Discharge Current: of 0.2C (400mA) Cut-off Voltage: 2.750±0.005 V Maximum Charge Current: 2000mA Max Loading current (peak value): 2A Max Loading current (constant): 1A Charge Temperature: 0 ~ 45 ℃/Discharge Temperature: -20 ~ +60 ℃ Weight: 40g Reliable Performance No leak, excellent cost performance and long cycle life. Overcharge, over-discharge, over-current, short circuit protection, over temperature protection. Please pay attention to the size of the battery and the polarity of the connector！ Battery size (WxLxH): 34.5 X 56 X 10.6 mm / 1.36 X 2.2 X 0.41 inch Connector model: JST-PHR-02 The red wire is the positive electrode "+" and the black wire is the negative electrode "-". Get more models of 3.7V lithium batteries at EEMB store!

Review: Upgrade replacement for Knight MagicBox II Bluetooth speaker (see important note) - 7/16/22 This rechargeable LiPo battery physically fits and works well as a replacement battery for the dknight MagicBox II Bluetooth speaker. As a bonus, this battery has 25% higher mA-hr capacity. However...IMPORTANT NOTE: battery power connector polarity is not standardized—connector polarity for these batteries may have to be reversed before installation!!
Review: Good quality - Double check polarity otherwise seem solid and so far up to spec. Worst case scenario de-pin and rearrange to match polarity.

## 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: 2000mAh, Min capacity: 1900mAh; Weight: 40g; Battery size (WxLxH): 34.5 X 56 X 10.6 mm / 1.36 X 2.2 X 0.41 inch
- 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 smart home systems, PDA and digital cameras, GPS, e-books, tracking devices, blood oxygen tracking equipment, pulse monitors, wireless, IoT.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08HD33ZKB |
| Amperage | 4 Amps |
| Antenna Location | Indoor/Outdoor |
| Battery Capacity | 2000 Milliamp Hours |
| Battery Cell Composition | Lithium Polymer |
| Battery Cell Type | Lithium Polymer |
| Battery Weight | 40 Grams |
| Best Sellers Rank | #282,691 in Health & Household ( See Top 100 in Health & Household ) #498 in 3.7V Batteries |
| Brand | EEMB |
| Customer Reviews | 3.8 out of 5 stars 79 Reviews |
| Item Dimensions | 1.36 x 2.2 x 0.42 inches |
| Item Weight | 55 Grams |
| Manufacturer | EEMB Co.,Ltd |
| Model Name | LP103454 |
| Model Number | LP103454-PCM |
| Number of Batteries | 100 Lithium Polymer batteries required. (included) |
| Recommended Uses For Product | Indoor/Outdoor |
| Reusability | Rechargeable |
| Unit Count | 4.0 Count |
| Voltage | 3.7 Volts |

## Product Details

- **Battery Capacity:** 2000 Milliamp Hours
- **Battery Cell Composition:** Lithium Polymer
- **Brand:** EEMB
- **Number of Batteries:** 100 Lithium Polymer batteries required. (included)
- **Recommended Uses For Product:** Indoor/Outdoor

## Images

![EEMB 4PACK Lithium Polymer Battery 3.7V 2000mAh 103454 Lipo Rechargeable Battery Pack with Wire JST Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase - Image 1](https://m.media-amazon.com/images/I/71txH+Gen0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Upgrade replacement for Knight MagicBox II Bluetooth speaker (see important note)
*by R***4 on July 16, 2022*

7/16/22 This rechargeable LiPo battery physically fits and works well as a replacement battery for the dknight MagicBox II Bluetooth speaker. As a bonus, this battery has 25% higher mA-hr capacity. However...IMPORTANT NOTE: battery power connector polarity is not standardized—connector polarity for these batteries may have to be reversed before installation!!

### ⭐⭐⭐⭐⭐ Good quality
*by J***Z on August 5, 2025*

Double check polarity otherwise seem solid and so far up to spec. Worst case scenario de-pin and rearrange to match polarity.

### ⭐ Seemingly poor construction with non-functional BMS
*by A***N on August 17, 2023*

Ordered for use with some RAK WisBlock Base Boards. After reversing the plug polarity so it matches the board, the batteries do work to power the board, and charge when the board is connected via USB. Unfortunately in spite of them having a BMS, three of the four batteries have swelled dramatically during the first three or four charging cycles. Straight from the box, they measure 9.37mm thick. The first battery is noticeably bulging and measures 10.85mm after being put through a few charge/discharge cycles over the course of a few days. The second one I tried, in the hopes that the first one was just defective, swelled to 9.8mm after just a single day, being charged by the RAK. The third one I've placed on my bench power supply with the CV/CC settings on 4.2v @ 1.0A (0.5C -- half what the Amazon product page says the battery is rated for; the battery itself is not marked with charge capacity information, nor is it printed on the including documentation. After charging this way for only 45 minutes, while still drawing ~500mA @ 4.2v, it has already swelled by 0.1mm. Will not be buying this brand of battery again, and all of these are getting recycled.

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-06-23*