3.7V 1800mAh 18650 Battery

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Component Name

Overview

The 3.7V 1800mAh 18650 Battery is a rechargeable lithium-ion battery designed for use in a wide range of Internet of Things (IoT) devices, portable electronics, and other applications where high energy density and compact size are required.

Functionality

The primary function of this battery is to store electrical energy that can be used to power devices such as IoT sensors, wearables, and other portable electronic devices. The battery operates within a voltage range of 3.7V and has a capacity of 1800mAh, making it suitable for applications that require a moderate to high amount of power.

Key Features

Voltage: 3.7V nominal voltage, with a charging voltage of 4.2V and a discharge cut-off voltage of 2.5V.
Capacity: 1800mAh, providing a moderate to high amount of power for IoT devices and other applications.
Chemistry: Lithium-ion (Li-ion), ensuring a high energy density, long cycle life, and low self-discharge rate.
Size: 18650, a standard cylindrical shape with a diameter of 18mm and a length of 65mm, making it compact and lightweight.
Protection Circuit: Equipped with a built-in protection circuit to prevent overcharge, over-discharge, and short-circuit, ensuring safe and reliable operation.
Operating Temperature: Rated for operation between -20C to 45C, making it suitable for use in a wide range of environments.
Cycle Life: Up to 500 charge-discharge cycles, providing a long service life and reducing the need for frequent replacements.
Self-Discharge: Less than 3% per month, allowing the battery to retain its charge even when not in use.
certifications: Compliant with international safety standards such as UN38.3, IEC62133, and UL2054, ensuring safe and reliable operation.

Technical Specifications

| Parameter | Value |

| --- | --- |

| Nominal Voltage | 3.7V |

| Capacity | 1800mAh |

| Charging Voltage | 4.2V |

| Discharge Cut-off Voltage | 2.5V |

| Size | 18650 (18mm x 65mm) |

| Weight | Approx. 45g |

| Operating Temperature | -20C to 45C |

| Cycle Life | Up to 500 cycles |

| Self-Discharge | < 3% per month |

Applications

The 3.7V 1800mAh 18650 Battery is suitable for a wide range of applications, including

IoT devices (sensors, trackers, and wearables)

Portable electronics (smartphones, laptops, and tablets)

E-bikes and electric vehicles

Medical devices

Industrial control systems

Consumer electronics (gaming devices, headphones, and speakers)

Handling and Storage

To ensure safe and reliable operation, the battery should be handled and stored in accordance with the following guidelines

Store in a cool, dry place away from flammable materials.

Avoid short-circuiting the battery terminals.

Use protective gloves and safety glasses when handling the battery.

Follow proper charging and discharging procedures.

Dispose of the battery according to local regulations and guidelines.

Pin Configuration

3.7V 1800mAh 18650 Battery Documentation
Pin Description:
The 3.7V 1800mAh 18650 Battery has two terminals, which are:
1. Positive Terminal (+):
Also known as the Cathode
Marked with a "+" sign or a red color
This terminal supplies power to the device
Voltage: 3.7V (nominal voltage)
2. Negative Terminal (-):
Also known as the Anode
Marked with a "-" sign or a black color
This terminal completes the circuit and allows current to flow back to the battery
Voltage: 0V (ground)
Connecting the Pins:
To connect the 3.7V 1800mAh 18650 Battery to a device or a circuit, follow these steps:
Step 1: Identify the Terminal
Identify the positive (+) and negative (-) terminals of the battery.
Ensure you understand the polarity of the battery to avoid damage or incorrect connections.
Step 2: Connect the Positive Terminal
Connect the positive terminal (+) of the battery to the positive input of the device or circuit.
Use a wire or a connector that can handle the current rating of the battery (in this case, up to 1800mAh).
Ensure a secure connection to prevent loose connections or short circuits.
Step 3: Connect the Negative Terminal
Connect the negative terminal (-) of the battery to the negative input of the device or circuit.
Use a wire or a connector that can handle the current rating of the battery (in this case, up to 1800mAh).
Ensure a secure connection to prevent loose connections or short circuits.
Important Safety Notes:
Always handle batteries with care to avoid short circuits, which can cause damage or even fire.
Ensure the battery is properly insulated and protected from physical damage.
Follow the recommended charging and discharging procedures to prolong the battery's lifespan.
Never attempt to charge or discharge the battery beyond its recommended specifications.
By following these guidelines, you can safely and effectively connect the 3.7V 1800mAh 18650 Battery to your device or circuit.

Code Examples

3.7V 1800mAh 18650 Battery Documentation

Overview

The 3.7V 1800mAh 18650 battery is a rechargeable lithium-ion battery designed for use in various IoT and electronic projects. It has a capacity of 1800mAh, making it suitable for applications requiring moderate power consumption. This documentation provides an overview of the battery's characteristics, specifications, and code examples for its use in different contexts.

Specifications

Voltage: 3.7V
 Capacity: 1800mAh
 Chemistry: Lithium-Ion (Li-ion)
 Dimensions: 18mm (diameter) x 65mm (length)
 Weight: approximately 45g
 Charging Method: CC/CV (constant current/constant voltage)

Code Examples

### Example 1: Using the 18650 Battery with an Arduino Board

In this example, we will demonstrate how to use the 3.7V 1800mAh 18650 battery with an Arduino Board to power a simple LED circuit.

Hardware Requirements

1 x Arduino Board (e.g., Arduino Uno)
 1 x 3.7V 1800mAh 18650 Battery
 1 x LED
 1 x Resistor (e.g., 1k)
 Jumper wires

Code
```c++
const int ledPin = 13;  // Choose a digital pin for the LED

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

void loop() {
  digitalWrite(ledPin, HIGH);  // Turn the LED on
  delay(1000);              // Wait for 1 second
  digitalWrite(ledPin, LOW);  // Turn the LED off
  delay(1000);              // Wait for 1 second
}
```
Note: Connect the positive terminal of the battery to the VIN pin on the Arduino Board, and the negative terminal to the GND pin. The LED circuit should be connected to a digital pin on the Arduino Board.

### Example 2: Using the 18650 Battery with a TP4056 Lithium Battery Charger Module

In this example, we will demonstrate how to use the 3.7V 1800mAh 18650 battery with a TP4056 Lithium Battery Charger Module to charge the battery using a USB power source.

Hardware Requirements

1 x TP4056 Lithium Battery Charger Module
 1 x 3.7V 1800mAh 18650 Battery
 1 x Micro-USB cable
 1 x USB power source (e.g., a computer or a wall adapter)

Code
```c++
// No code is required for this example, as the TP4056 module handles the charging process automatically.
```
Note: Connect the positive terminal of the battery to the B+ pin on the TP4056 module, and the negative terminal to the B- pin. Connect the USB cable to the module's USB input and a USB power source.

These examples demonstrate the basic use of the 3.7V 1800mAh 18650 battery in IoT and electronic projects. Remember to handle the battery with care, following proper safety guidelines when charging and using it in your projects.