How to Use 12.8V 30000mAh 3C 4S5P LiFePO4 Battery Pack: Examples, Pinouts, and Specs

The 12.8V 30000mAh 3C 4S5P LiFePO4 Battery Pack (Manufacturer: Pro-Range, Part ID: IFR 32650) is a high-performance rechargeable lithium iron phosphate (LiFePO4) battery pack. It features a nominal voltage of 12.8V, a capacity of 30,000mAh, and a discharge rate of 3C. The pack is constructed using 4 cells in series (4S) and 5 cells in parallel (5P), ensuring high energy density, long cycle life, and enhanced safety.

• Solar energy storage systems
• Uninterruptible Power Supplies (UPS)
• Electric vehicles (EVs) and e-bikes
• Portable power stations
• Robotics and industrial equipment
• Marine and RV power systems

The battery pack typically includes the following terminals and connections:

Note: The exact pin configuration may vary depending on the specific design of the battery pack. Always refer to the manufacturer's datasheet for detailed wiring diagrams.

1. Connection to Load:

   • Connect the positive (+) and negative (-) terminals of the battery pack to the load or device.
   • Ensure the load does not exceed the maximum continuous discharge current (90A).

2. Charging the Battery:

   • Use a LiFePO4-compatible charger with a maximum charge voltage of 14.6V.
   • Ensure the charger supports the required charge current (e.g., 0.5C or 15A for optimal charging).

3. Battery Management System (BMS):

   • The battery pack includes a built-in BMS for overcharge, over-discharge, and short-circuit protection.
   • Connect the BMS port to a compatible monitoring system if required.

4. Cell Balancing:

   • During charging, the BMS ensures cell balancing to maintain consistent voltage across all cells.

• Avoid Overcharging: Do not exceed the maximum charge voltage of 14.6V to prevent damage.
• Avoid Deep Discharge: Do not discharge below the cut-off voltage of 10.0V to extend cycle life.
• Temperature Management: Operate the battery within the specified temperature range to ensure safety and performance.
• Storage: Store the battery at 50% charge in a cool, dry place if not in use for extended periods.
• Wiring: Use appropriately rated wires and connectors to handle the high current output.

The battery pack can power an Arduino UNO via a DC-DC step-down converter to regulate the voltage to 5V. Below is an example circuit and code:

1. Connect the battery pack's positive (+) and negative (-) terminals to the input of a DC-DC step-down converter.
2. Set the output of the converter to 5V.
3. Connect the 5V output to the Arduino UNO's 5V and GND pins.

// Example code to blink an LED using Arduino UNO powered by the LiFePO4 battery pack

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
}

Note: Ensure the DC-DC converter is properly configured to output 5V before connecting to the Arduino UNO.

1. Can I use this battery pack for solar energy storage?

   • Yes, the battery pack is ideal for solar energy systems due to its long cycle life and stable performance.

2. What happens if I overcharge the battery?

   • The built-in BMS prevents overcharging, but using a compatible charger is essential to avoid damage.

3. How do I extend the battery's lifespan?

   • Avoid deep discharges, overcharging, and operating outside the recommended temperature range.

4. Can I connect multiple packs in series or parallel?

   • Yes, but ensure proper balancing and use a compatible BMS for series/parallel configurations.

By following these guidelines, you can safely and effectively use the 12.8V 30000mAh 3C 4S5P LiFePO4 Battery Pack in your projects.