Don't miss

Terminus FE1.1 USB hub board: the solution to connect four USB devicesPosted 3 days ago
Understanding the Mechanics of 3D PrintingPosted 2 months ago
SDS011 the Air Quality SensorPosted 3 months ago
NIXIE STYLE LED DISPLAYPosted 6 months ago
TOTEM: learning by experimentingPosted 6 months ago
Google Assistant Voice Controlled Switch – NodeMCU IOT ProjePosted 7 months ago
Water Softener Salt Level MonitorPosted 7 months ago
Sparkly Air SensorPosted 7 months ago
Ultra sonic distance finder with live statusPosted 7 months ago
Windows interface to have total control over lampsPosted 7 months ago

18650 Battery charger reverse polarity protection

By Emanuele Signoretta on December 21, 2020

Having many 18650 battery cells to charge, I bought a few dirt cheap TP4056 modules (0.22 EUR per piece) and discovered that they are “not designed for” reversed polarity cells. In other words, reversed battery = instant magic smoke.

As I know for sure I will insert more batteries in the wrong orientation again sooner or later, I wondered what the best reverse polarity protection would be.

More info

About Emanuele Signoretta

Studying electronics and communication engineering at Politecnico di Torino. Electronics, IT and Open Source enthusiast.

2 Comments

OpenSource Products

Demoboard for ESP32
Demoboard for the famous ESP32 Bluetooth and WiFi module (available...
- Posted 3 months ago
- 1
TOTEM: learning by experimenting
Let’s learn about an interesting educational platform that allows...
- Posted 6 months ago
- 0
Air Quality Sensor – PM2.5, PM10
This module uses the principle of optical LASER light scattering...
- Posted 6 months ago
- 1
Small solar cell (0,5 V / 800 mA)
Photovoltaic cell with very small dimensions, suitable for carrying out...
- Posted 8 months ago
- 1
The cheapest Arduino alternative: PRO MIDI 1284P
It is halfway between an Arduino Mini (in size)...
- Posted 9 months ago
- 3
Chip 1 IN – 4 OUT USB 2.0 High Speed
The FE1.1s chip is a high-performance, low-power integrated circuit that...
- Posted 9 months ago
- 0
Display Oled 1.3 inch
1.3″ Organic Light Emitting Diode (OLED) Display with good contrast,...
- Posted 9 months ago
- 0
PRO midi 1284P Developer’s Board
Developer’s board specially made for use with the PRO midi...
- Posted 9 months ago
- 0

Tutorials

PCB CAD, A SELECTION GUIDE
Getting to know and evaluate the software offer for PCB,...
- Posted 2 years ago
- 0
DIY Sensor – Innovation & Implementation
A sensor converts data such as heat, light, sound,...
- Posted 2 years ago
- 0
Getting Started with the ESP32
This article is a getting started guide for the ESP32...
- Posted 3 years ago
- 0

Mods and Hacks

The flame that doesn’t burn
Based on Neopixel and a special ultra-thin Arduino, it simulates...
- Posted 1 year ago
- 1
Here are the Winners from the 3Drag 3d printing contest
Here we are, eventually the contest has come to an...
- Posted 8 years ago
- 0
Updates from the 3Drag 3dprinting contest: Roland Hoffert’s Hacks
Roland Hoffert, from www.eytec.de, submitted us this 3Drag (Velleman K8200...
- Posted 8 years ago
- 0
Updates from the 3Drag 3dprinting contest: Karl Seiss’s Hack
Karl Seiss from Austria made a very clever hack to...
- Posted 8 years ago
- 0

Opinions

PCB Recycling: The Core of Your Electronics Is More Valuable Than You Think
The screen you are looking at this very moment will...
- Posted 1 year ago
- 4
PCB CAD, A SELECTION GUIDE
Getting to know and evaluate the software offer for PCB,...
- Posted 2 years ago
- 0
The Open Source community united against Covid-19
On March 11, WHO (World Health Organization) officially declared the...
- Posted 3 years ago
- 0
Coronavirus: Now Is The Time For Solidarity
The moment we are living, in China before and all...
- Posted 3 years ago
- 0

Popular
Latest
Comments

Arduino ISP (In System Programming) and stand-alone circuits
We use an Arduino to program other ATmega without...
- Posted 11 years ago
- 225
Arduino GSM shield
This is a very low...
- Posted 12 years ago
- 218
Localizer with SIM908 module
The device is based on a GSM/GPRS module with...
- Posted 11 years ago
- 187
GSM GPS shield for Arduino
Shield for Arduino designed and based on the module...
- Posted 11 years ago
- 181
Small Breakout for SIM900 GSM Module
Some post ago we presented a PCB to mount...
- Posted 12 years ago
- 115

Cookiecad, the easiest way to create custom cookie cutters to print in 3D
Cookiecad is a tool that allows you to create...
- Posted 22 hours ago
- 0
Terminus FE1.1 USB hub board: the solution to connect four USB devices
Based on a single chip from Terminus, it...
- Posted 3 days ago
- 0
LED Filament Lamp with Integrated Dimmer Module Design
LEDs come in many different shapes and sizes....
- Posted 1 month ago
- 0
Main Technologies in 3D Printing
3D printing is a cutting-edge technology that enables the...
- Posted 1 month ago
- 0
Understanding the Mechanics of 3D Printing
3D printing is a cutting-edge technology that enables the...
- Posted 2 months ago
- 0

18650 Battery charger reverse polarity protection

About Emanuele Signoretta

2 Comments

Leave a Reply

OpenSource Products

Tutorials

Mods and Hacks

Opinions

Newsletter

Popular

Latest

Comments

Categories

Sponsors

About us

Advertise with Open Electronics

License and Privacy Policy

18650 Battery charger reverse polarity protection

About Emanuele Signoretta

Related Posts

2 Comments

Leave a Reply

OpenSource Products

Tutorials

Mods and Hacks

Opinions

Newsletter

Popular

Latest

Comments

Categories

Sponsors

About us

Advertise with Open Electronics

License and Privacy Policy