---
product_id: 651530950
title: "3.7V 4000mAh Battery 606090 Lithium Polymer Ion Rechargeable Li-ion Li-Po Battery with 2P PH 2.0mm Pitch Connector"
brand: "uxney"
price: "7159 som"
currency: KGS
in_stock: true
reviews_count: 8
category: "Uxney"
url: https://www.desertcart.kg/products/651530950-3-7v-4000mah-battery-606090-lithium-polymer-ion-rechargeable-li
store_origin: KG
region: Kyrgyzstan
---

# 3.7V stable voltage 4000mAh high capacity 2P PH 2.0mm connector 3.7V 4000mAh Battery 606090 Lithium Polymer Ion Rechargeable Li-ion Li-Po Battery with 2P PH 2.0mm Pitch Connector

**Brand:** uxney
**Price:** 7159 som
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your productivity with sleek, reliable energy!

## Quick Answers

- **What is this?** 3.7V 4000mAh Battery 606090 Lithium Polymer Ion Rechargeable Li-ion Li-Po Battery with 2P PH 2.0mm Pitch Connector by uxney
- **How much does it cost?** 7159 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/651530950-3-7v-4000mah-battery-606090-lithium-polymer-ion-rechargeable-li)

## Best For

- uxney enthusiasts

## Why This Product

- Trusted uxney brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Power That Lasts:** 4000mAh capacity keeps your devices running longer without constant recharging.
- • **Lightweight & Slim:** At just 74g and 6mm thickness, it fits snugly without adding bulk to your gear.
- • **Fast & Safe Charging:** Supports max charge voltage of 4.25V and current of 2000mAh for efficient, reliable power top-ups.
- • **Seamless Compatibility:** Designed as a perfect drop-in replacement for Keychron K4 and similar devices with 2P PH 2.0mm connectors.
- • **Premium Lithium Polymer:** Advanced Li-Po chemistry ensures stable performance and longevity for your professional tech needs.

## Overview

This 3.7V 4000mAh Lithium Polymer rechargeable battery features a compact 90x60x6mm design and a 2P PH 2.0mm pitch connector, making it an ideal, lightweight replacement battery for devices like the Keychron K4. With a max charging voltage of 4.25V and 2000mAh current, it delivers efficient, long-lasting power in a durable Li-Po format.

## Description

Voltage: 3.7V; Capacity: 4000mAh; Maximum charging voltage/current: DC4.25V/2000mAh Package Content: 1 x Lithium Polymer Battery Material: Lithium polymer Net weight: 74g

Review: If you're looking for a replacement battery for your Keychron K4 - This is a drop in replacement for the battery on a Keychron K4. Great battery so far, no issues whatsoever. Has the correct connector and easy to install.
Review: ok - charges well from usb however buy a bigger battery as this one is a ripoff

## Features

- Voltage: 3.7V; Capacity: 4000mAh；Maximum Charge Voltage/Current: DC4.25V/2000mAh
- Package Content: 1 x Lithium Polymer Battery
- Material: Lithium Polymer; Net Weight: 74g
- Connector Type: 2P 2.0mm Pitch; Cable Length: 5cm / 2"
- Size: 90mm x 60mm x 6mm/3.51" x 2.34" x 0.23"

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DB1VKT9X |
| Battery Capacity | 4000 Milliampere Hour (mAh) |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 0.1 Pounds |
| Battery capacity | 4000 Milliampere Hour (mAh) |
| Battery cell composition | Lithium Ion |
| Best Sellers Rank | 10,435 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 236 in Rechargeable Household Batteries |
| Brand | Uxney |
| Brand Name | Uxney |
| Country of Origin | China |
| Customer Reviews | 4.1 out of 5 stars 61 Reviews |
| Manufacturer | Uxney |
| Model Number | UK606090 |
| Number of Batteries | 1 Lithium Ion batteries required. (included) |
| Number of batteries | 1 Lithium Ion batteries required. (included) |
| Reusability | Rechargeable |
| Unit Count | 1.0 count |
| Unit count | 1.0 count |
| Voltage | 3.7 Volts |

## Product Details

- **Number of batteries:** 1 Lithium Ion batteries required. (included)
- **Brand:** Uxney
- **Battery cell composition:** Lithium Ion
- **Battery capacity:** 4000 Milliampere Hour (mAh)
- **Unit count:** 1.0 Count

## Images

![3.7V 4000mAh Battery 606090 Lithium Polymer Ion Rechargeable Li-ion Li-Po Battery with 2P PH 2.0mm Pitch Connector - Image 1](https://m.media-amazon.com/images/I/51RIaIQV+WL.jpg)
![3.7V 4000mAh Battery 606090 Lithium Polymer Ion Rechargeable Li-ion Li-Po Battery with 2P PH 2.0mm Pitch Connector - Image 2](https://m.media-amazon.com/images/I/716GvXx9cdL.jpg)
![3.7V 4000mAh Battery 606090 Lithium Polymer Ion Rechargeable Li-ion Li-Po Battery with 2P PH 2.0mm Pitch Connector - Image 3](https://m.media-amazon.com/images/I/61-PMPWdvSL.jpg)
![3.7V 4000mAh Battery 606090 Lithium Polymer Ion Rechargeable Li-ion Li-Po Battery with 2P PH 2.0mm Pitch Connector - Image 4](https://m.media-amazon.com/images/I/71llK-kEV-L.jpg)
![3.7V 4000mAh Battery 606090 Lithium Polymer Ion Rechargeable Li-ion Li-Po Battery with 2P PH 2.0mm Pitch Connector - Image 5](https://m.media-amazon.com/images/I/71OPFTFWDfL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ If you're looking for a replacement battery for your Keychron K4
*by C***S on 15 November 2025*

This is a drop in replacement for the battery on a Keychron K4. Great battery so far, no issues whatsoever. Has the correct connector and easy to install.

### ⭐⭐⭐⭐ ok
*by M***. on 23 August 2025*

charges well from usb however buy a bigger battery as this one is a ripoff

### ⭐⭐⭐⭐⭐ Long life and fair value
*by H***H on 24 December 2025*

Bought to replace expired 8yr old battery this one has a higher mAH so should last longer as I only use solar to recharge it. Good value and long life.

## Frequently Bought Together

- 3.7V 4000mAh Battery 606090 Lithium Polymer Ion Rechargeable Li-ion Li-Po Battery with 2P PH 2.0mm Pitch Connector
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**Shop now:** [https://www.desertcart.kg/products/651530950-3-7v-4000mah-battery-606090-lithium-polymer-ion-rechargeable-li](https://www.desertcart.kg/products/651530950-3-7v-4000mah-battery-606090-lithium-polymer-ion-rechargeable-li)

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-03-09*