The Battery Charging Module 2 x 18650 USB 5V (Manufacturer Part ID: 1567) is a compact and efficient module designed to charge two 18650 lithium-ion batteries simultaneously. It features a USB input for charging and provides a regulated 5V output, making it ideal for powering small electronic devices or circuits. This module is widely used in portable power banks, DIY electronics projects, and backup power systems.
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This circuit is a battery management and power supply system that uses three 3.7V batteries connected to a 3S 10A Li-ion 18650 Charger Protection Board Module for balanced charging and protection. The system includes a TP4056 Battery Charging Protection Module for additional charging safety, a Step Up Boost Power Converter to regulate and boost the voltage, and a USB regulator to provide a stable 5V output, controlled by a push switch.
This circuit is a portable power supply system that uses multiple 18650 Li-ion batteries to provide a stable 5V output through a boost converter. It includes a fast charging module with a USB-C input for recharging the batteries and a battery indicator for monitoring the battery status. The system powers a Lora G2 Node Station, making it suitable for wireless communication applications.
This circuit consists of three 18650 batteries connected in series to a 3S 10A Li-ion 18650 Charger Protection Board Module. The protection board manages the charging and discharging of the battery pack, ensuring safe operation by balancing the cells and providing overcharge, over-discharge, and short-circuit protection.
This circuit is a battery management and charging system for a 2S lithium-ion battery pack, which powers multiple MG996R servos. The TP5100 module charges the battery pack from a 12V power supply, while the 2S 30A BMS ensures safe operation and distribution of power to the servos.
Below are the key technical details of the module:
Parameter
Specification
Input Voltage
5V (via micro-USB or USB Type-A port)
Output Voltage
5V (regulated)
Battery Type Supported
18650 lithium-ion batteries
Number of Batteries
2 (connected in parallel)
Charging Current
1A (maximum)
Output Current
1A (maximum)
Protection Features
Overcharge, over-discharge, and short-circuit protection
Dimensions
60mm x 22mm x 15mm
Pin Configuration and Descriptions
The module has several key connectors and pins for input, output, and battery connections. Below is a detailed description:
Pin/Connector
Description
Micro-USB Port
Used for charging the 18650 batteries via a 5V USB power source.
USB Type-A Port
Provides a regulated 5V output for powering external devices or circuits.
B+
Positive terminal for connecting the first 18650 battery.
B-
Negative terminal for connecting the first 18650 battery.
OUT+
Positive terminal for the 5V output (if not using the USB Type-A port).
OUT-
Negative terminal for the 5V output (if not using the USB Type-A port).
Usage Instructions
How to Use the Module in a Circuit
Connect the Batteries:
Insert two 18650 lithium-ion batteries into the module, ensuring correct polarity. The positive terminal of the battery should connect to the B+ pin, and the negative terminal to the B- pin.
Ensure the batteries are securely placed in the holder or connected via wires.
Power the Module:
Use a standard 5V USB power source (e.g., a phone charger or USB port) to charge the batteries via the micro-USB port.
Output Power:
To power an external device or circuit, connect the load to the USB Type-A port or use the OUT+ and OUT- pins for direct connections.
Monitor Charging:
The module typically includes indicator LEDs:
Red LED: Charging in progress.
Blue LED: Charging complete.
Important Considerations and Best Practices
Battery Safety: Only use high-quality 18650 lithium-ion batteries with built-in protection circuits to avoid risks of overcharging or overheating.
Heat Management: Ensure proper ventilation around the module during operation to prevent overheating.
Load Current: Do not exceed the maximum output current of 1A to avoid damaging the module.
Polarity Check: Double-check the polarity of the batteries before connecting them to the module to prevent damage.
Example: Using with an Arduino UNO
The module can be used to power an Arduino UNO via its USB Type-A port. Below is an example code to blink an LED using the Arduino UNO powered by the module:
// Example code to blink an LED using Arduino UNO
// Ensure the Arduino is powered via the USB Type-A port of the module
const int ledPin = 13; // Pin connected to the onboard LED
void setup() {
pinMode(ledPin, OUTPUT); // Set the LED pin as an 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
}
Troubleshooting and FAQs
Common Issues and Solutions
Module Not Charging the Batteries:
Cause: Incorrect battery polarity or damaged batteries.
Solution: Verify the battery polarity and ensure the batteries are functional.
No Output Voltage:
Cause: Batteries are not charged or the load exceeds the maximum current rating.
Solution: Charge the batteries fully and ensure the load current is within the 1A limit.
Overheating During Operation:
Cause: Prolonged high current draw or poor ventilation.
Solution: Reduce the load current and ensure proper airflow around the module.
LED Indicators Not Working:
Cause: Faulty LEDs or improper connections.
Solution: Check the connections and replace the module if necessary.
FAQs
Can I use only one 18650 battery with this module?
Yes, the module can operate with a single 18650 battery, but the runtime will be reduced.
Is it safe to leave the module connected to a USB charger indefinitely?
Yes, the module includes overcharge protection, but it is recommended to disconnect once fully charged to prolong battery life.
Can I use this module to charge other types of batteries?
No, this module is specifically designed for 18650 lithium-ion batteries and should not be used with other battery types.
What happens if I connect a load that exceeds 1A?
The module may overheat or shut down to protect itself. Always ensure the load current is within the specified limit.
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