AA-AAA-9V Battery Charger. Documentation

Component Name

AA-AAA-9V Battery Charger

Description

The AA-AAA-9V Battery Charger is a compact and efficient charging module designed to recharge a wide range of batteries, including AA, AAA, and 9V types. This charger is an essential component in various IoT applications, such as wireless sensor networks, remote monitoring systems, and portable devices.

Functionality

The AA-AAA-9V Battery Charger is a constant-current, constant-voltage charger that provides a safe and efficient charging process for batteries. The charger operates by detecting the type of battery connected and automatically adjusting the charging parameters to ensure optimal charging. The charger's microcontroller unit (MCU) continuously monitors the charging process, providing overcharge protection, short-circuit protection, and thermal protection to prevent damage to the batteries.

Key Features

Multi-Battery Support: The charger supports charging of AA, AAA, and 9V batteries, making it a versatile component for various IoT applications.
Automatic Battery Detection: The charger detects the type of battery connected and adjusts the charging parameters accordingly, ensuring optimal charging and preventing damage to the batteries.
Constant-Current, Constant-Voltage Charging: The charger provides a stable charging current and voltage, ensuring fast and efficient charging while preventing overcharging.
Overcharge Protection: The charger's MCU continuously monitors the charging process and terminates charging when the batteries are fully charged, preventing overcharging and prolonging battery life.
Short-Circuit Protection: The charger features built-in short-circuit protection, which prevents damage to the charger and batteries in case of a short circuit.
Thermal Protection: The charger's thermal protection feature prevents overheating, ensuring safe and reliable operation.
Compact Design: The charger's compact design makes it ideal for use in space-constrained IoT applications.
Low Power Consumption: The charger has a low power consumption, making it suitable for battery-powered IoT devices.
LED Indicators: The charger features LED indicators that provide visual feedback on the charging status, making it easy to monitor the charging process.

Input Voltage

5V DC

Output Voltage

1.2V - 9V DC (depending on battery type)

Output Current

up to 500mA (depending on battery type)

Charging Modes

Constant-Current, Constant-Voltage

Battery Types Supported

AA, AAA, 9V

Operating Temperature

-20C to 40C

Storage Temperature

-40C to 80C

Dimensions

35mm x 25mm x 15mm (LxWxH)

Weight

10g

Applications

The AA-AAA-9V Battery Charger is suitable for use in a wide range of IoT applications, including

Wireless sensor networks

Remote monitoring systems

Portable devices

IoT gateways

Wearable devices

Conclusion

The AA-AAA-9V Battery Charger is a reliable and efficient charging module designed to recharge a variety of batteries. Its compact design, automatic battery detection, and multiple protection features make it an ideal component for IoT applications that require efficient and safe battery charging.

Pin Configuration

AA-AAA-9V Battery Charger Component Documentation
Overview
The AA-AAA-9V Battery Charger is a compact and efficient charging module designed to recharge AA, AAA, and 9V batteries. This module is ideal for IoT projects, robotics, and other applications that require reliable battery charging.
Pin Description
The AA-AAA-9V Battery Charger module has a total of 6 pins, labeled as follows:
1. VCC (Pin 1)
Function: Power Input
Description: This pin is used to connect the external power source (e.g., a wall adapter or a power bank) to the charger module. The recommended input voltage range is 5V to 12V.
Connection: Connect a power source (e.g., a wall adapter) to this pin.
2. GND (Pin 2)
Function: Ground
Description: This pin serves as the ground reference point for the charger module.
Connection: Connect the ground wire of the power source or a common ground point to this pin.
3. B+ (Pin 3)
Function: Battery Positive Terminal
Description: This pin is connected to the positive terminal of the battery being charged.
Connection: Connect the positive terminal of the AA, AAA, or 9V battery to this pin.
4. B- (Pin 4)
Function: Battery Negative Terminal
Description: This pin is connected to the negative terminal of the battery being charged.
Connection: Connect the negative terminal of the AA, AAA, or 9V battery to this pin.
5. STAT (Pin 5)
Function: Charging Status Indicator
Description: This pin outputs a digital signal indicating the charging status of the battery. The signal is:
+ High (VCC) when the battery is charging
+ Low (GND) when the battery is fully charged or not connected
Connection: Optional connection to a microcontroller or indicator LED to monitor the charging status.
6. EN (Pin 6)
Function: Enable Pin
Description: This pin is used to enable or disable the charging function. The charging function is enabled when this pin is connected to VCC, and disabled when connected to GND.
Connection: Typically connected to VCC to enable the charging function.
Connection Structure
To connect the pins, follow this structure:
VCC (Pin 1) Power Source (e.g., wall adapter)
GND (Pin 2) Power Source Ground or common ground point
B+ (Pin 3) Positive terminal of the AA, AAA, or 9V battery
B- (Pin 4) Negative terminal of the AA, AAA, or 9V battery
STAT (Pin 5) Optional connection to microcontroller or indicator LED
EN (Pin 6) VCC to enable the charging function (or GND to disable)
Important Notes
Ensure the power source voltage is within the recommended range (5V to 12V) to prevent damage to the charger module.
Always connect the battery to the charger module before applying power to the module.
The charger module is designed for charging AA, AAA, and 9V batteries only. Do not attempt to charge other types of batteries.
By following this documentation, you can properly connect the AA-AAA-9V Battery Charger module to your IoT project or application, ensuring safe and reliable battery charging.

Code Examples

AA-AAA-9V Battery Charger Documentation

Overview

The AA-AAA-9V Battery Charger is a versatile and efficient component designed to charge AA, AAA, and 9V batteries. This charger supports a wide range of applications, from small IoT devices to larger systems, and is suitable for both technical professionals and informed hobbyists.

Features

Supports charging of AA, AAA, and 9V batteries
 Compact design with a small footprint
 Efficient charging algorithm for fast and safe charging
 Overcharge protection to prevent battery damage
 Status indicators for charging and error conditions

Pinout

The AA-AAA-9V Battery Charger has the following pins:

VCC: Input voltage (5V typical)
 GND: Ground
 BATT+: Positive terminal of the battery being charged
 BATT-: Negative terminal of the battery being charged
 CHG_IND: Charging indicator (active high)
 ERR_IND: Error indicator (active high)

Code Examples

The following code examples demonstrate how to use the AA-AAA-9V Battery Charger in various contexts:

Example 1: Basic Charging with Arduino

This example shows how to use the AA-AAA-9V Battery Charger with an Arduino board to charge a AA battery.
```c++
const int chargePin = 2;  // Connect to CHG_IND pin
const int errPin = 3;    // Connect to ERR_IND pin

void setup() {
  pinMode(chargePin, INPUT);
  pinMode(errPin, INPUT);
}

void loop() {
  // Check if charging is in progress
  if (digitalRead(chargePin) == HIGH) {
    Serial.println("Charging in progress...");
  } else {
    Serial.println("Charging complete or not charging.");
  }

// Check for error conditions
  if (digitalRead(errPin) == HIGH) {
    Serial.println("Error condition detected!");
  }
  delay(1000);
}
```
Example 2: Charging 9V Battery with Raspberry Pi

This example demonstrates how to use the AA-AAA-9V Battery Charger with a Raspberry Pi to charge a 9V battery.
```python
import RPi.GPIO as GPIO
import time

GPIO.setmode(GPIO.BCM)

charge_pin = 17  # Connect to CHG_IND pin
err_pin = 23    # Connect to ERR_IND pin

GPIO.setup(charge_pin, GPIO.IN)
GPIO.setup(err_pin, GPIO.IN)

while True:
    if GPIO.input(charge_pin) == GPIO.HIGH:
        print("Charging in progress...")
    else:
        print("Charging complete or not charging.")

if GPIO.input(err_pin) == GPIO.HIGH:
        print("Error condition detected!")
    time.sleep(1)
```
Example 3: Autonomous Charging with ESP32

This example shows how to use the AA-AAA-9V Battery Charger with an ESP32 board to charge a AAA battery and monitor the charging status using a web interface.
```c++
#include <WiFi.h>
#include <ESPAsyncWebServer.h>

const char ssid = "your_wifi_ssid";
const char password = "your_wifi_password";

AsyncWebServer server(80);

const int chargePin = 2;  // Connect to CHG_IND pin
const int errPin = 3;    // Connect to ERR_IND pin

void setup() {
  Serial.begin(115200);

// Connect to Wi-Fi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to Wi-Fi...");
  }

Serial.println("Connected to Wi-Fi");
  Serial.println("Starting web server...");

server.on("/charge", HTTP_GET, [](AsyncWebServerRequest request) {
    if (digitalRead(chargePin) == HIGH) {
      request->send(200, "text/plain", "Charging in progress...");
    } else {
      request->send(200, "text/plain", "Charging complete or not charging.");
    }
  });

server.on("/error", HTTP_GET, [](AsyncWebServerRequest request) {
    if (digitalRead(errPin) == HIGH) {
      request->send(200, "text/plain", "Error condition detected!");
    } else {
      request->send(200, "text/plain", "No error condition detected.");
    }
  });

server.begin();
}

void loop() {
  // Monitor charging status and error conditions
  delay(1000);
}
```
These code examples demonstrate the versatility and ease of use of the AA-AAA-9V Battery Charger in various IoT applications.