---
product_id: 672791386
title: "JacobsParts Smallest USB Type C 3.7V Lithium Battery Charger Board 4.2V Charging Module with Protection Circuit and LED Charge Indicators 5V USB-C Input (2 Pack)"
brand: "jacobsparts"
price: "฿1786"
currency: THB
in_stock: true
reviews_count: 5
category: "Jacobs Parts"
url: https://www.desertcart.co.th/products/672791386-jacobsparts-smallest-usb-type-c-3-7v-lithium-battery-charger
store_origin: TH
region: Thailand
---

# 4.2V stable output voltage 1A fast charging current Compact USB-C input JacobsParts Smallest USB Type C 3.7V Lithium Battery Charger Board 4.2V Charging Module with Protection Circuit and LED Charge Indicators 5V USB-C Input (2 Pack)

**Brand:** jacobsparts
**Price:** ฿1786
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up small, charge smart, stay ahead.

## Quick Answers

- **What is this?** JacobsParts Smallest USB Type C 3.7V Lithium Battery Charger Board 4.2V Charging Module with Protection Circuit and LED Charge Indicators 5V USB-C Input (2 Pack) by jacobsparts
- **How much does it cost?** ฿1786 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/672791386-jacobsparts-smallest-usb-type-c-3-7v-lithium-battery-charger)

## Best For

- jacobsparts enthusiasts

## Why This Product

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

## Key Features

- • **Safety-First Design:** Built-in over-current, over-voltage, and under-voltage protection for worry-free charging.
- • **Smart Charging Cycle:** Automatically stops and resumes charging to maximize battery lifespan and efficiency.
- • **Pre-Charge Revival Mode:** Gentle 100mA pre-charge for deeply discharged batteries under 2.9V, extending battery health.
- • **Ultra-Compact Powerhouse:** Tiny 14×18×5mm footprint fits anywhere, perfect for sleek, space-conscious designs.
- • **Universal USB-C Compatibility:** Works seamlessly with modern USB-C PD chargers for hassle-free, future-proof power.

## Overview

The JacobsParts USB Type-C Lithium Battery Charger Board is a compact, high-efficiency 1A charging module designed for 3.7V lithium batteries. Featuring a stable 4.2V output, smart charge cycle management, and comprehensive safety protections, it ensures fast, reliable, and safe charging. Its ultra-small size and USB-C input make it ideal for modern, space-sensitive electronics projects, delivering professional-grade performance in a minimalist package.

## Description

The JacobsParts Ultra-Small Lithium Battery Charging Board is engineered for efficient charging of 3.7V lithium batteries. Compact and weighing practically nothing, it incorporates a powerful 1A high current linear charging system, delivering fast and reliable charging. This product includes a Type-C interface for the power source, achieving compatibility with most PD chargers and ensuring broad connectivity. This well-designed charging module boasts an operational input voltage range of 5-6V and offers a stable output voltage of 4.2V, providing reliable and steady charging. Its intuitive design assures an automatic termination of the charging cycle when the final float voltage is reached and the charging current decreases to 100mA. The charging cycle automatically resumes when the battery voltage falls below 4.05V, corresponding to 80-90% of the battery capacity, guaranteeing a full battery. When your battery voltage dips lower than 2.9V, this unit initiates a pre-charging process with a 100mA current to safely and steadily rejuvenate your battery. The JacobsParts Charging Board is built with an integrated protection circuit, providing over-discharge protection with a value of 2.4V and over-current protection of 4A, ensuring the safety and longevity of your lithium battery. The board is simple to use, simply connect it to the power supply and it's ready to go. Despite its numerous functionalities, the board is surprisingly compact with dimensions of 14×18×5mm. The Type C port projects approximately 1.5mm, adding hardly any bulk to the unit.

Review: Although one of the connectors had a defective problem, it was quickly replaced. When compared with vast majority similar competitive products, this particular unit is vastly superior from my experience. It is smaller and allows for secure precision mounting ... especially in 3d print configuration. It also has components mounted in from edge allowing for gripping of edges or use in really tight configurations. Itd indicator LED is near enough the connector with the brightness enough that no particular considerations are needed. My future design projects WILL include these modules! DEFINATELY RECOMMENDED!
Review: When you buy these, make sure you understand how this works. It charges batteries but you can't draw power from the USB-C charging port. There are other small charging boards that can do both! Just search here at desertcart.

## Features

- An ultra-small, 1A charging board for 3.7V lithium batteries with USB Type-C power input and LED charge indicators
- Charges to 4.2V, provides 100mA pre-charging for batteries with voltages under 2.9V
- Incorporates automatic charge cycle termination and resumption for efficient charging
- Integrates safety features including over-current, over-voltage, and under-voltage protection for secure charging
- Compact and lightweight design (14×18×5mm), easy to install and use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CBNQH836 |
| Amperage | 1 Amps |
| Best Sellers Rank | 131,872 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1,698 in International Power Adapters |
| Brand Name | JacobsParts |
| Colour | Black |
| Connector Types | USB Type-C |
| Current Rating | 1 Amps |
| Customer Reviews | 4.6 4.6 out of 5 stars (47) |
| Input Voltage | 5 Volts |
| Item Dimensions D x W x H | 18D x 14W x 5H millimetres |
| Item Weight | 1 Ounces |
| Manufacturer | JacobsParts |
| Manufacturer Part Number | CPNT-E-2PK |
| Model Number | CPNT-E-2PK |
| Number of Ports | 1 |
| Output Voltage | 4.2 Volts |
| Specification Met | FCC, UL |
| UPC | 845832035123 |

## Product Details

- **Brand:** JacobsParts
- **Colour:** Black
- **Item weight:** 1 Ounces
- **Output voltage:** 4.2 Volts
- **Product dimensions:** 18D x 14W x 5H millimetres

## Images

![JacobsParts Smallest USB Type C 3.7V Lithium Battery Charger Board 4.2V Charging Module with Protection Circuit and LED Charge Indicators 5V USB-C Input (2 Pack) - Image 1](https://m.media-amazon.com/images/I/71I0YL8vYAL.jpg)
![JacobsParts Smallest USB Type C 3.7V Lithium Battery Charger Board 4.2V Charging Module with Protection Circuit and LED Charge Indicators 5V USB-C Input (2 Pack) - Image 2](https://m.media-amazon.com/images/I/71C8OrW2CeL.jpg)
![JacobsParts Smallest USB Type C 3.7V Lithium Battery Charger Board 4.2V Charging Module with Protection Circuit and LED Charge Indicators 5V USB-C Input (2 Pack) - Image 3](https://m.media-amazon.com/images/I/71XZf5KwitL.jpg)
![JacobsParts Smallest USB Type C 3.7V Lithium Battery Charger Board 4.2V Charging Module with Protection Circuit and LED Charge Indicators 5V USB-C Input (2 Pack) - Image 4](https://m.media-amazon.com/images/I/712iJtKzNNL.jpg)
![JacobsParts Smallest USB Type C 3.7V Lithium Battery Charger Board 4.2V Charging Module with Protection Circuit and LED Charge Indicators 5V USB-C Input (2 Pack) - Image 5](https://m.media-amazon.com/images/I/71vhDJ81YOL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***N on 4 March 2025*

Although one of the connectors had a defective problem, it was quickly replaced. When compared with vast majority similar competitive products, this particular unit is vastly superior from my experience. It is smaller and allows for secure precision mounting ... especially in 3d print configuration. It also has components mounted in from edge allowing for gripping of edges or use in really tight configurations. Itd indicator LED is near enough the connector with the brightness enough that no particular considerations are needed. My future design projects WILL include these modules! DEFINATELY RECOMMENDED!

### ⭐⭐⭐⭐⭐ Review
*by K***R on 2 May 2024*

When you buy these, make sure you understand how this works. It charges batteries but you can't draw power from the USB-C charging port. There are other small charging boards that can do both! Just search here at Amazon.

### ⭐⭐⭐⭐⭐ Review
*by D***K on 4 March 2024*

This board is working well for me and the size is perfect for my LED flashlight project.

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-29*