18650 Battery Expansion Board / Mobile Power Supply V8 / 5V3V ESP32 ESP8266

Description

What it is

The 18650 V8 Expansion Board is a device that allows the use of a 18650 lithium battery to power electronic projects such as those based on ESP32, ESP8266, and Arduino. This expansion board provides a portable and autonomous power solution for electronic devices.

Features

• Compatible with 18650 lithium batteries
• Suitable for ESP32, ESP8266, and Arduino projects
• Provides 5V and 3.3V power supply

What it is for

The 18650 V8 expansion board is ideal for creating portable and autonomous devices powered by lithium batteries. You can use it to power temperature sensors, create IoT devices, or any other project that requires continuous power without access to an electrical outlet.

Tutorial: How to use the 18650 V8 Battery Expansion Board

The V8 18650 battery expansion board is ideal for powering Arduino and ESP32/ESP8266 projects with a 18650 lithium battery. It is perfect for makers who want to create portable and autonomous devices.

What you need

• 18650 lithium battery
• Arduino or ESP32/ESP8266
• connectors
• soldering tools

Steps

1. Connect the 18650 battery to the expansion board.
2. Check the correct polarity of the battery.
3. Connect the expansion board to your Arduino or ESP32/ESP8266 device.
4. Check the device power supply through status LEDs or measurement tools.
5. Configure the device to manage battery power (check the datasheet).
6. Test the device operation with a charged battery.
7. Check the battery life during device use.
8. Disconnect the battery when not in use to protect the hardware.

Example code

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  digitalWrite(LED_BUILTIN, HIGH);
  delay(1000);
  digitalWrite(LED_BUILTIN, LOW);
  delay(1000);
}

Mini project

Create a portable temperature sensor with ESP32 powered by an 18650 battery. Connect a temperature sensor like DHT11 to the expansion board and send the data to a cloud platform.

Common mistakes

• Reversed battery polarity.
• Poor soldering connections.
• Device not powered correctly.
• Battery not charged correctly.

Recommended accessories

• DHT11 sensor
• 18650 lithium battery
• Micro USB connector
• Soldering tools

Frequently asked questions

How can I charge the battery?
Use a charger compatible with 18650.

Which devices are compatible?
Arduino, ESP32, ESP8266 and other devices requiring 5V or 3.3V power.

How long does the battery last?
Depends on the device consumption, check the datasheet.