---
product_id: 422863269
title: "EEMB Lithium Polymer battery 3.7V 350mAh 702030 Lipo Rechargeable Battery Pack with wire JST Connector-confirm device & connector polarity before purchase"
brand: "eemb"
price: "80 zł"
currency: PLN
in_stock: true
reviews_count: 13
category: "Eemb"
url: https://www.desertcart.pl/products/422863269-eemb-lithium-polymer-battery-3-7v-350mah-702030-lipo-rechargeable
store_origin: PL
region: Poland
---

# 350mAh Capacity Boost 3.7V Voltage Power JST Connector Precision EEMB Lithium Polymer battery 3.7V 350mAh 702030 Lipo Rechargeable Battery Pack with wire JST Connector-confirm device & connector polarity before purchase

**Brand:** eemb
**Price:** 80 zł
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your essentials with precision and confidence—never miss a beat!

## Quick Answers

- **What is this?** EEMB Lithium Polymer battery 3.7V 350mAh 702030 Lipo Rechargeable Battery Pack with wire JST Connector-confirm device & connector polarity before purchase by eemb
- **How much does it cost?** 80 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/422863269-eemb-lithium-polymer-battery-3-7v-350mah-702030-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

- • **Smart Storage Tips:** Maintain optimal battery health by storing at 40%-60% charge and recharging every 3 months—extend your device’s lifespan effortlessly.
- • **Precision Power Fit:** Designed with exact 702030 size and JST connector for seamless device compatibility—no guesswork, no short circuits.
- • **Lightweight & Compact:** At just 7g and 20x32x7mm, this battery fits discreetly into your Bluetooth speakers, dash cams, and smart home gadgets without bulk.
- • **Certified Safety Assurance:** UN 38.3 and UL certified for peace of mind—power your tech with industry-trusted reliability and protection.
- • **Reliable Long-Lasting Charge:** 350mAh typical capacity with PCM protection ensures your devices stay powered safely and efficiently over hundreds of cycles.

## Overview

The EEMB Lithium Polymer Battery 3.7V 350mAh 702030 is a compact, lightweight rechargeable power source featuring a JST connector for exact device compatibility. Engineered with PCM protection for overcharge, discharge, and short circuit safety, it delivers reliable long cycle life. UL and UN 38.3 certified, it’s ideal for Bluetooth speakers, dash cams, smart home devices, and more, ensuring your gadgets maintain settings and performance with every charge.

## Description

Free delivery and returns on eligible orders. Buy EEMB Lithium Polymer battery 3.7V 350mAh 702030 Lipo Rechargeable Battery Pack with wire JST Connector-confirm device & connector polarity before purchase at desertcart UK.

Review: Perfect for many Dashcam - I had two dashcam that no longer saved all the info. If you have ever gone through putting the date right then adding plate, then wifi and gps....etc - then you'll know what a pain it can be and sometimes a mission. Then, after a time, the battery no longer keeps a charge and dies (can be heat from the hotter weather, I read somewhere) This usually means whenever and IF the camera still works on the cars plugin, it means the default settings are the only settings you get. Anyway, this little battery is the perfect size to fit both my dashcams and just needed soldering in and replacing the old ones. I highly recommend this particular size and mAh as its brough my cameras back to new and both now keep the personal settings and time. I am NOT an electrician, just a hobbyist, so this info is just my own experience.
Review: Saved a nice pair of AKG headphones - Neat, it worked. Saved a nice pair of AKG headphones.

## 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: 350mAh, Min capacity: 310mAh; Weight: approximate 7g; Size: 7.3 x 20.5 x 32mm (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.//MANUFACTURER DIRECT— 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/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 | B095W1XHVY |
| Batteries | 1 Lithium Polymer batteries required. |
| Best Sellers Rank | 5,049 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 136 in Rechargeable Household Batteries |
| Brand | EEMB |
| Customer Reviews | 4.3 4.3 out of 5 stars (810) |
| Date First Available | 27 Aug. 2021 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Guaranteed software updates until | unknown |
| Included components | Lithium Polymer |
| Item Weight | 7.1 Grams |
| Item model number | LP702030-PCM |
| Package Dimensions L x W x H | 8.4 x 4.4 x 1 centimetres |
| Package Weight | 0.02 Kilograms |
| Part number | LP702030 |
| Product Dimensions L x W x H | 20 x 32 x 7 millimetres |
| Size | 702030 (350mAh) |

## Product Details

- **Battery capacity:** 350
- **Battery cell composition:** Lithium Polymer
- **Brand:** EEMB
- **Number of batteries:** 1 Lithium Polymer batteries required.
- **Recommended uses for product:** Sphero BB-8

## Images

![EEMB Lithium Polymer battery 3.7V 350mAh 702030 Lipo Rechargeable Battery Pack with wire JST Connector-confirm device & connector polarity before purchase - Image 1](https://m.media-amazon.com/images/I/61DcrgJuayL.jpg)

## Questions & Answers

**Q: Will this work inside razer basilisks ultimate?**
A: It might but I think this battery is really meant for dashcam purposes.  2 double a batteries provide 3.0 volts for a much longer time than this little thing.

**Q: What type of charger do i use**
A: That would depend on your device.  This is a replacement for device batteries with a two pronged connector. My device uses a usb micro b.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect for many Dashcam
*by N***N on 12 November 2025*

I had two dashcam that no longer saved all the info. If you have ever gone through putting the date right then adding plate, then wifi and gps....etc - then you'll know what a pain it can be and sometimes a mission. Then, after a time, the battery no longer keeps a charge and dies (can be heat from the hotter weather, I read somewhere) This usually means whenever and IF the camera still works on the cars plugin, it means the default settings are the only settings you get. Anyway, this little battery is the perfect size to fit both my dashcams and just needed soldering in and replacing the old ones. I highly recommend this particular size and mAh as its brough my cameras back to new and both now keep the personal settings and time. I am NOT an electrician, just a hobbyist, so this info is just my own experience.

### ⭐⭐⭐⭐⭐ Saved a nice pair of AKG headphones
*by A***T on 20 October 2025*

Neat, it worked. Saved a nice pair of AKG headphones.

### ⭐⭐⭐⭐ Good delivery.
*by K***R on 19 April 2025*

Works fine

## Frequently Bought Together

- EEMB 3.7V Lipo Battery 350mAh 702030 Lithium Polymer ion Battery Rechargeable Lithium ion Polymer Battery with JST Connector Make Sure Device Polarity Matches with Battery Before Purchase!!!
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- EEMB Lithium Polymer Battery 3.7V 260mAh 601730 Lipo Rechargeable Battery Pack with Wire JST Connector for Speaker and Wireless Device- Confirm Device & Connector Polarity Before Purchase

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-29*