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6pcs 2A 5V Charge Discharge Integrated Module 3.7V 4.2V for 18650 Lithium Battery Charging Boost Mobile Power Protection PCB Board Module

Brand: MakerFocus

4.3 222 ratings

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Purchase options and add-ons

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

About this item

★ 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)

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Price	$8.99	$9.99	$6.99	$11.99	$10.99	$9.99
Delivery	Get it as soon as Saturday, May 18	Get it as soon as Saturday, May 18	Get it as soon as Saturday, May 18	Get it as soon as Saturday, May 18	Get it as soon as Saturday, May 18	Get it as soon as Saturday, May 18
Customer Ratings	4.3222	4.64	4.330	4.141	5.01	4.76
Sold By	MakerFocus	Aediko US	QINGRUIJING	HANXI01	D-FLIFE	Teyleten Robot-US
output voltage	5 volts	5 volts	5 volts	5 volts	12.0 volts, 5.0 volts	12.0 volts, 5.0 volts
input voltage	5 volts	5 volts	4.7 volts	5.5 volts	12.0 volts, 5.0 volts, 3.7 volts, 9.0 volts	12.0 volts, 9.0 volts

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Product information

Product Dimensions

0.98 x 0.63 x 0.39 inches

Item Weight

0.634 ounces

ASIN

B07PZT3ZW2

Customer Reviews

4.3 222 ratings

4.3 out of 5 stars

Best Sellers Rank

#160,593 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
#635 in Power Converters

Is Discontinued By Manufacturer

Date First Available

March 21, 2019

Manufacturer

MakerFocus

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Product 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

Customer reviews

4.3 out of 5

222 global ratings

How customer reviews and ratings work

Customers say

Customers like the performance, indicators, and appearance of the power converter. For example, they mention it works great, has nice indicators showing charge status, and has a display to show battery capacity. That said, some complain about the battery life, and output voltage. They say the module shuts itself off and causes the battery to catch fire.

AI-generated from the text of customer reviews

10 customers mention10 positive0 negative

Customers are satisfied with the performance of the power converter. They mention that it works great, performs to spec, and works reliably without any fuss. They also say that the trigger sleep and wake work as advertised, and the charging works as expected. Customers also mention that the power modules are very handy and versatile.

"...Trigger sleep and wake work as advertised. 2 ground taps to sleep. 1 to wake...." Read more

"...They actually perform to spec and work reliably without any fuss...." Read more

"I'm already using them in several projects and conversions. They are very handy, small enough to put in almost anything...." Read more

"...Charging worked as expected too. Without a load the Vout was 5.14V which is great. Nice work whoever designed this I was impressed." Read more

6 customers mention6 positive0 negative

Customers like the appearance of the power converter. They say it's small enough to put in almost anything, and is an incredible little board. Some mention that the boards are perfect for small projects that need LiPo or Lion batteries, and are a perfect fit and layout for fitting into bike handlebar extension tubes. Overall, customers are satisfied with the appearance and functionality of the product.

"...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...." Read more

"...And they are a perfect fit and layout for fitting into bike handlebar extension tubes (another Amazon purchase) along with a couple 18650's..." Read more

"I really would give this a 5 because it is an incredible little board...." Read more

"...They are very handy, small enough to put in almost anything...." Read more

3 customers mention3 positive0 negative

Customers like the indicators in the power converter. They say it has nice indicators showing charge status, battery capacity, and auto detects current draw.

"...This module auto detects current draw. If it is high enough it will keep the 5V output on...." Read more

"...They Have nice indicators showing charge status, although the color scheme is a bit weird. Blue for charging and red for charged...." Read more

"...step up a single cell li-ion to 5v, reg charging, have a display to show battery capacity what more do you want on a single board?" Read more

3 customers mention3 positive0 negative

Customers are satisfied with the quality of the power converter. They mention that the boards are solid, easy to resolder, and the pcb is heavy duty.

"These boards are solid. It's nice to have something rated for 2amps in such a small size...." Read more

"Good charge + discharge board. Robust pads are easy to resolder and the pcb is heavy duty. They output 2+ amps and ripple is < .02V...." Read more

"great board that can do so much with..." Read more

5 customers mention2 positive3 negative

Customers are mixed about the value of the power converter. Some mention it's good value for money, while others say it'll waste time and money. Some customers also say the boards are useless for their projects and awkward to use.

"...This could be a deal breaker at worst, or like in my case, somewhat inconvenient and awkward to use...." Read more

"...I did, but these are cheap enough to just double the amount I use on the project I needed it for." Read more

"...or have two switches or a DPDT etc which is just a waste of time and money...." Read more

"Good value for money and arrived quickly." Read more

6 customers mention0 positive6 negative

Customers are dissatisfied with the battery life of the power converter. For example, they mention that the protection chip actually caused the battery to catch fire. They also say that the module would shut itself off when the battery was too low.

"...My current draw on the Arduino was way too low so this module would shut itself off...." Read more

"...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...." Read more

"...Every time I go to grab my battery powered devices the battery is dead...." Read more

"...A second significant problem is that the controller will not shut down at 3v...." Read more

4 customers mention0 positive4 negative

Customers are dissatisfied with the output voltage of the power converter. They say that it's a trickle and not close enough to 5V to run a Raspberry Pi without complaints.

"...Another thing, they seem to have an abnormally high quiescent current draw...." Read more

"...V-out is only 4.65v and not close enough to 5v to run a RPi without complaints. I have to add a booster on V-out which is addt'l $10 project cost." Read more

"works 100%, I wish the voltage was a bit higher, I get a few brownout reading from ESP32 boards" Read more

"...with it several times while trying to figure out why my output voltage was a trickle and flashed intermittently...." Read more

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Customer of Stuff

Well made

Reviewed in the United States on May 16, 2020

Verified Purchase

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.

35 people found this helpful

Helpful

Charles Lipermann

Great working SMALL BMS board.

Reviewed in the United States on June 11, 2022

Verified Purchase

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.

2 people found this helpful

Helpful

Anonymous

Decent LiPo charge/5v boost modules

Reviewed in the United States on May 7, 2024

Verified Purchase

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.

Helpful

Desertpilot

Discharge mode quiescent current is 375uA, NOT 50uA!

Reviewed in the United States on July 29, 2023

Verified Purchase

8/823 UPDATE: Have found that if NO load is connected to module, quiescent current fluctuates between 39-64uA. So as advertised if NO load connected to Vout. Using the EN key to turn off still results in 375uA. Also found that by running Arduino (Atmega328P bare chip) on parallel circuit from battery, then it can switch the whole load from this charger/booster Vout using NPN BJT in low side. THEN the quiescent current IS around 39-64uA with load connected, but switched off by controller on parallel circuit that is NOT powered by Vout (grounds connected). Reducing controller clock speed to 8Mhz or less allows controller/arduino/MCU to operate off 3.7v Li-on battery power. So mission accomplished with this work around.

Original review:
First tested at 5.1v OUT with 4.0v IN from 18650 Li-on battery.
I like the pin line up on one side with standard spacing. Made it MUCH easier to solder header pins on than other modules and place on breadboard.
Then I removed the 4 LEDs, as this was intended for embedded battery project.
V OUT powering an awake Atmega328P circuit is a great 5.1v.
Trigger sleep and wake work as advertised. 2 ground taps to sleep. 1 to wake.

The PROBLEM: The Discharge quiescent current (V IN from battery, V OUT to load, and triggered to shut off load) is 375uA, NOT the advertised 50uA!!! I tested on 2 of the boards using 2 DMMs.
Major problem for battery projects!!! FALSE ADVERTISING FOR SURE

If only powering part of your load from this module, and you use the enable function from microprocessor through transistor or something to act as power switch, then this may still be viable, but will take more circuit work, programming and components.
If the quiescent current for complete sleeping load project from battery is important, DO NOT purchase this module if that's a major consideration!!!

It also would have been better with throughhole for ENable pin instead of pad. Extra hassle with pad to circuit board or breadboard placement

I have not tested the charging with or without load function

5 people found this helpful

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