---
product_id: 125427065
title: "MakerFocus 6pcs 2A 5V Charge Discharge Integrated Module 3.7V 4.2V for 18650 Lithium Battery with Charging Boost Mobile Power Protection PCB Board Module"
brand: "makerfocus"
price: "R296"
currency: ZAR
in_stock: true
reviews_count: 7
category: "Maker Focus"
url: https://www.desertcart.co.za/products/125427065-makerfocus-6pcs-2a-5v-charge-discharge-integrated-module-3-7v
store_origin: ZA
region: South Africa
---

# 2.4A max discharge current 4-in-1 charge/discharge/protect/indicator Multi-layer battery protection MakerFocus 6pcs 2A 5V Charge Discharge Integrated Module 3.7V 4.2V for 18650 Lithium Battery with Charging Boost Mobile Power Protection PCB Board Module

**Brand:** makerfocus
**Price:** R296
**Availability:** ✅ In Stock

## Summary

> 🔌 Power your projects with precision and protection — never settle for less!

## Quick Answers

- **What is this?** MakerFocus 6pcs 2A 5V Charge Discharge Integrated Module 3.7V 4.2V for 18650 Lithium Battery with Charging Boost Mobile Power Protection PCB Board Module by makerfocus
- **How much does it cost?** R296 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/125427065-makerfocus-6pcs-2a-5v-charge-discharge-integrated-module-3-7v)

## Best For

- makerfocus enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Ultra-compact 25x16x4mm PCB fits sleek, space-conscious designs
- • **User-Friendly Control:** Low-level trigger KEY port enables easy microcontroller integration and manual power toggling
- • **Smart Battery Guardian:** Integrated over-current, over-voltage, short circuit & temperature protection for ultimate battery safety
- • **Intuitive Load Detection:** Auto on/off output based on load current keeps your device efficient and responsive
- • **Seamless Charge & Discharge:** Supports simultaneous charging and discharging with up to 2.4A current for uninterrupted power flow

## Overview

The MakerFocus 6pcs 2A 5V Charge Discharge Integrated Module is a compact, multi-functional PCB designed for 18650 lithium batteries. It combines charging, discharging, battery level indication, and robust protection features including over-current, over-voltage, short circuit, and over-temperature safeguards. With a max discharge current of 2.4A and efficient 96% discharge efficiency, it supports simultaneous charge and discharge operations. Its smart load detection and low-level trigger control make it ideal for microcontroller projects, portable power banks, and retrofit applications, all within a tiny 25x16x4mm footprint.

## Description

Parameter: Charging voltage: DC 4.5V-5.5V (DC 5V recommended) Charging current: 0-2.1A Charging quiescent current: 100uA Full voltage: 4.2V+ -1% Discharge current: 0-2.4A Discharge quiescent current: 50uA Discharge efficiency: up to 96% Output voltage: 5V Output current: 0-2.4A Ambient temperature: -20℃ to + 85℃ PCB board process: Shen Jin Size : 25 * 16 * 4mm The module comes with lithium battery protection function: Over-current protection (OCP) Overvoltage protection (OVP) Short Circuit Protection (SCP) Over-temperature protection (OTP) Charge and discharge power level 4 interval indicate Pin description: VIN: Charge Port Positive Input + GND: Charger Negative Input - BAT: Lithium Battery + GND: Lithium Battery - GND: Output Negative Output - OUT: Output Positive Output + KEY: Output Enable Trigger Port (Low Pulse Trigger) Applications: Car charging retrofit Driving recorder power supply Mobile power Portable devices such as mobile phones and tablets Package Content: 6 * 2A 5V Lithium battery charging protection module

Review: Great working SMALL BMS board. - I bought these for a series of single LED flashlights Iw as building. I was looking for a small form factor when I got these, and boy it sure is small. I love the battery status LED's on the side of the board. It added functionality that I wasn't originally planning to add. My biggest problem with these boards is because they are so small. it's easy to let the smoke out while soldering the wires to the board. That issue is 100% my fault though, and wouldn't be an issue if I could have soldering the wires to this board first. But my design didn't allow that.
Review: Well made - These look nice, but I really wish it was easier to use the 5V output. Sending a signal every 5 seconds with a micro controller is a pain. I mostly just would love to find a module that can charge a lithium ion battery over micro-USB and have it also have a built in 5V regulator too. I know the Adafruit Powerboost does that, but they cost $15-$20 each. This device is so close to doing that. Edit: I found out why I had to keep activating this module to keep the power output on. This module auto detects current draw. If it is high enough it will keep the 5V output on. I was trying to keep an Arduino in a low power state then occasionally waking it up to transmit a radio signal which can draw a lot of power for a few seconds. My current draw on the Arduino was way too low so this module would shut itself off. The only way to keep it on was to send the button input on the board a low signal every so often to prevent it from turning off. I couldn’t find any detailed information on these modules, but I figured these out when I tried using them again for a portable LED project. When I woke up the module and the brightness on my LED board was high it would stay on indefinitely. If my brightness was low when it first woke up it would shut off by itself after 30-45 seconds. If it woke up on high brightness and I switched it down to low without restarting it then it would still stay on indefinitely. Kind of odd behavior, but now that I understand these modules these are great for many use cases. I love how the push button on the side acts as a power switch. Press once to wake it up and press it twice to turn it off.

## Features

- ★ MCU users, if you accept a small load KEY can be connected to the microcontroller about 20s to provide a low level allows the module to continue working. Trigger mode: low level trigger (ground)
- ★ 4 in 1 Charging / Discharging / Lithium Battery Protection / Battery Level Indicator Module. Lithium battery protection function: over-current, overvoltage, over-temperature, short circuit protection
- ★ In discharge mode (The charging mode KEY function is invalid), trigger the KEY port once to open the output; continuously trigger the KEY port twice to close the output
- ★ The first time the load is connected, the output is automatically turned on. If the load is less than 50mA, the output will be automatically turned off after 30 seconds; if the load is greater than 50mA, the output will be automatically turned on
- ★ Allow discharge while charging. (Note: At this time output voltage 4.7 / 5V)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07PZT3ZW2 |
| Best Sellers Rank | #397,629 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,730 in Power Converters |
| Customer Reviews | 4.2 4.2 out of 5 stars (236) |
| Date First Available | March 21, 2019 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.634 ounces |
| Manufacturer | MakerFocus |
| Product Dimensions | 0.98 x 0.63 x 0.39 inches |

## Product Details

- **Brand:** MakerFocus
- **Color:** As Shown
- **Input Voltage:** 5 Volts
- **Item dimensions L x W x H:** 0.98 x 0.63 x 0.39 inches
- **Output Voltage:** 5 Volts

## Images

![MakerFocus 6pcs 2A 5V Charge Discharge Integrated Module 3.7V 4.2V for 18650 Lithium Battery with Charging Boost Mobile Power Protection PCB Board Module - Image 1](https://m.media-amazon.com/images/I/71PNAdxzBHL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great working SMALL BMS board.
*by C***N on June 11, 2022*

I bought these for a series of single LED flashlights Iw as building. I was looking for a small form factor when I got these, and boy it sure is small. I love the battery status LED's on the side of the board. It added functionality that I wasn't originally planning to add. My biggest problem with these boards is because they are so small. it's easy to let the smoke out while soldering the wires to the board. That issue is 100% my fault though, and wouldn't be an issue if I could have soldering the wires to this board first. But my design didn't allow that.

### ⭐⭐⭐⭐⭐ Well made
*by C***F on May 16, 2020*

These look nice, but I really wish it was easier to use the 5V output. Sending a signal every 5 seconds with a micro controller is a pain. I mostly just would love to find a module that can charge a lithium ion battery over micro-USB and have it also have a built in 5V regulator too. I know the Adafruit Powerboost does that, but they cost $15-$20 each. This device is so close to doing that. Edit: I found out why I had to keep activating this module to keep the power output on. This module auto detects current draw. If it is high enough it will keep the 5V output on. I was trying to keep an Arduino in a low power state then occasionally waking it up to transmit a radio signal which can draw a lot of power for a few seconds. My current draw on the Arduino was way too low so this module would shut itself off. The only way to keep it on was to send the button input on the board a low signal every so often to prevent it from turning off. I couldn’t find any detailed information on these modules, but I figured these out when I tried using them again for a portable LED project. When I woke up the module and the brightness on my LED board was high it would stay on indefinitely. If my brightness was low when it first woke up it would shut off by itself after 30-45 seconds. If it woke up on high brightness and I switched it down to low without restarting it then it would still stay on indefinitely. Kind of odd behavior, but now that I understand these modules these are great for many use cases. I love how the push button on the side acts as a power switch. Press once to wake it up and press it twice to turn it off.

### ⭐⭐⭐⭐ Decent LiPo charge/5v boost modules
*by A***S on May 7, 2024*

These boards are solid. It's nice to have something rated for 2amps in such a small size. I used these with a raspberry pi and some other peripherals without issue. I would like to point out that these aren't necessarily "maker-friendly" though. Unlike similar boards like Adafruit's PowerBoost series or Helder's RetroRSU, these do not have a simple enable pin. They do have a "power on button", but this works by needing to be pressed and released to turn on and off, instead of the traditional EN pin which is pulled high/low and remains in the same state as long as the EN remains the same. In short, this means that you can't realistically connect a typical sliding power switch and instead must use a momentary button. This could be a deal breaker at worst, or like in my case, somewhat inconvenient and awkward to use. I do suspect that these are designed for use with power banks, which would explain the power on/off button behavior. Another thing, they seem to have an abnormally high quiescent current draw. This means that when the device is powered down but the battery is still connected, power will be drained from the battery. In my project, I find that pulling it out of a drawer after a few days of not using it, it is always dead and has to be charged before I use it each time. Again, annoying for me, but not a deal breaker although it may be for others. So based on your application these may or may not be well suited. If these do not work in your case, I recommend looking into alternatives like the Adafruit PowerBoost or Helder's RetroPSU.

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-25*