3.7V 2900mAh 18650 Battery
3.7V 2900mAh 18650 Battery
The 3.7V 2900mAh 18650 Battery is a rechargeable lithium-ion battery designed for use in various Internet of Things (IoT) devices, electronic projects, and other applications requiring a reliable and efficient power source. This battery is a type of 18650 battery, which is a standardized format commonly used in portable electronics.
The primary function of the 3.7V 2900mAh 18650 Battery is to store electrical energy and provide power to connected devices. It is designed to operate within a specific voltage range and capacity, ensuring stable performance and longevity.
The battery operates within a normal voltage range of 3.4V to 4.2V, with a nominal voltage of 3.7V.
The battery has a capacity of 2900mAh, indicating the amount of electric charge it can hold. A higher capacity means the battery can provide power for a longer duration.
The battery uses lithium-ion chemistry, which offers high energy density, long cycle life, and relatively low self-discharge.
The battery conforms to the 18650 standard, which defines the size, shape, and terminal layout of the battery.
The battery is rechargeable, allowing it to be used multiple times with proper charging and maintenance.
The battery is designed to withstand up to 500 charge/discharge cycles, ensuring a long lifespan and minimizing the need for replacement.
The battery has a low internal resistance, which helps to minimize energy loss and heat generation during charging and discharging.
The battery has a low self-discharge rate, meaning it can retain its charge over a longer period when not in use.
The battery is designed to operate within a specific temperature range, ensuring optimal performance and safety.
The battery meets or exceeds relevant safety standards for lithium-ion batteries, ensuring safe operation and minimizing the risk of accidents.
| The 3.7V 2900mAh 18650 Battery is suitable for a wide range of applications, including |
IoT devices (e.g., smart home devices, wearables, sensor nodes)
Portable electronics (e.g., flashlights, e-bikes, power tools)
Electronic projects (e.g., robots, drones, Arduino projects)
Backup power systems
Other devices requiring a reliable and efficient power source
| When working with the 3.7V 2900mAh 18650 Battery, it is essential to follow proper safety guidelines and precautions to avoid accidents and ensure safe operation |
Handle the battery with care to avoid physical damage.
Charge the battery according to the recommended charging profile and parameters.
Avoid overcharging or deep discharging, as this can affect battery performance and lifespan.
Keep the battery away from heat sources, open flames, and sparks.
Monitor the battery's temperature and voltage during charging and discharging.
Follow proper storage and transportation guidelines to prevent any potential hazards.
3.7V 2900mAh 18650 Battery DocumentationOverviewThe 3.7V 2900mAh 18650 Battery is a high-capacity lithium-ion battery commonly used in various IoT applications, including robotics, drones, and portable electronics. This battery provides a reliable power source for devices requiring a compact, high-energy density power supply.Technical SpecificationsVoltage: 3.7V
Capacity: 2900mAh
Type: Lithium-ion (Li-ion)
Dimensions: 18mm (diameter) x 65mm (length)
Weight: approximately 45g
Cycle Life: up to 500 charge/discharge cyclesConnecting the BatteryThe 18650 battery has a standard positive (cathode) and negative (anode) terminal. To connect the battery, use the following polarity:Positive terminal (cathode): connect to the power input of your device or circuit.
Negative terminal (anode): connect to ground (GND) or the negative power input of your device or circuit.Code Examples### Example 1: Basic Battery Connection with ArduinoIn this example, we will connect the 18650 battery to an Arduino board to power a simple LED circuit.Hardware Requirements3.7V 2900mAh 18650 Battery
Arduino Board (e.g., Arduino Uno)
LED
1 k Resistor
Breadboard
Jumper WiresSketch
```c++
void setup() {
// Initialize the LED pin as an output
pinMode(LED_BUILTIN, OUTPUT);
}void loop() {
// Turn the LED on
digitalWrite(LED_BUILTIN, HIGH);
delay(1000);
// Turn the LED off
digitalWrite(LED_BUILTIN, LOW);
delay(1000);
}
```
Connection DiagramConnect the positive terminal of the 18650 battery to the VIN pin on the Arduino board. Connect the negative terminal to the GND pin. Connect the LED and 1 k resistor in series between the 5V pin and the GND pin on the Arduino board.### Example 2: Powering a Wi-Fi Module with the 18650 BatteryIn this example, we will connect the 18650 battery to power a Wi-Fi module, such as the ESP8266.Hardware Requirements3.7V 2900mAh 18650 Battery
ESP8266 Wi-Fi Module
Breadboard
Jumper WiresCode
```c++
#include <WiFi.h>const char ssid = "your_wifi_ssid";
const char password = "your_wifi_password";void setup() {
// Initialize the Wi-Fi module
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(1000);
Serial.println("Connecting to Wi-Fi...");
}
Serial.println("Connected to Wi-Fi");
}void loop() {
// Send a message to a server or perform other Wi-Fi tasks
WiFiClient client;
client.setServer("http://example.com", 80);
client.println("GET / HTTP/1.1");
client.println("Host: example.com");
client.println("Connection: close");
client.println();
while (client.available()) {
String line = client.readStringUntil('
');
Serial.println(line);
}
delay(1000);
}
```
Connection DiagramConnect the positive terminal of the 18650 battery to the VCC pin on the ESP8266 Wi-Fi module. Connect the negative terminal to the GND pin on the module.Remember to adjust the voltage and current requirements of your devices or circuits according to the specifications of the 18650 battery. Always follow proper safety precautions when working with batteries and electrical circuits.