How to Use LiPo 2500mAh: Examples, Pinouts, and Specs

The PKCELL LiPo 2500mAh is a lightweight and high-capacity lithium polymer battery designed for applications requiring reliable and portable power. With a capacity of 2500mAh, this battery is ideal for powering RC vehicles, drones, portable electronics, and other devices that demand high energy density and compact form factors. Its rechargeable nature and stable performance make it a popular choice for hobbyists and professionals alike.

• RC vehicles (cars, boats, planes)
• Drones and quadcopters
• Portable electronic devices (e.g., handheld gaming consoles, cameras)
• DIY electronics projects
• Robotics and IoT devices

The following table outlines the key technical details of the PKCELL LiPo 2500mAh battery:

The PKCELL LiPo 2500mAh battery typically comes with two main wires and an optional balance connector. The pin configuration is as follows:

Note: The balance connector is optional and may not be present on all models. Ensure compatibility with your charger and device.

1. Connect the Battery:

   • Identify the positive (red) and negative (black) wires.
   • Connect the wires to the corresponding terminals of your device or circuit.
   • If using a balance charger, connect the balance connector to the charger for optimal charging.

2. Charging the Battery:

   • Use a LiPo-compatible charger with a constant current/constant voltage (CC/CV) charging profile.
   • Set the charging current to 0.5C (1.25A) for safe charging or up to 1C (2.5A) for faster charging.
   • Ensure the charging voltage does not exceed 4.2V per cell.

3. Discharging the Battery:

   • Avoid discharging below 3.0V to prevent damage to the battery.
   • Use a battery management system (BMS) or low-voltage alarm to monitor the voltage during use.

4. Connecting to an Arduino UNO:

   • Use a voltage regulator (e.g., LM7805) or a DC-DC buck converter to step down the voltage to 5V for the Arduino UNO.
   • Example circuit connection:
     • Connect the battery's positive wire to the input of the regulator.
     • Connect the regulator's output to the Arduino's 5V pin.
     • Connect the battery's negative wire to the Arduino's GND pin.

Below is an example of monitoring the battery voltage using an Arduino UNO and a voltage divider circuit:

// Define the analog pin connected to the voltage divider
const int voltagePin = A0;

// Define the voltage divider ratio (e.g., R1 = 10k, R2 = 10k)
const float voltageDividerRatio = 2.0;

// Define the reference voltage of the Arduino (5V for UNO)
const float referenceVoltage = 5.0;

void setup() {
  Serial.begin(9600); // Initialize serial communication
}

void loop() {
  int sensorValue = analogRead(voltagePin); // Read the analog pin
  float batteryVoltage = (sensorValue * referenceVoltage / 1023.0) * voltageDividerRatio;

  // Print the battery voltage to the Serial Monitor
  Serial.print("Battery Voltage: ");
  Serial.print(batteryVoltage);
  Serial.println(" V");

  delay(1000); // Wait for 1 second before the next reading
}

Important: Use resistors with appropriate values in the voltage divider to ensure the input voltage to the Arduino does not exceed 5V.

• Always use a LiPo-safe charger to prevent overcharging or overheating.
• Store the battery at 3.7V to 3.8V per cell for long-term storage.
• Avoid puncturing, short-circuiting, or exposing the battery to high temperatures.
• Use a fireproof LiPo bag during charging for added safety.

1. Battery Not Charging:

   • Cause: Charger not compatible or balance connector not connected.
   • Solution: Verify the charger is LiPo-compatible and properly connected.

2. Battery Swelling or Puffing:

   • Cause: Overcharging, over-discharging, or physical damage.
   • Solution: Stop using the battery immediately and dispose of it safely.

3. Low Runtime:

   • Cause: Battery capacity degraded or excessive current draw.
   • Solution: Check the discharge rate and ensure the battery is not overused.

4. Device Not Powering On:

   • Cause: Incorrect wiring or low battery voltage.
   • Solution: Verify connections and measure the battery voltage.

• Q: Can I use this battery for a 5V device?
  A: Yes, but you must use a voltage regulator or DC-DC converter to step up or step down the voltage.

• Q: How do I safely dispose of a damaged LiPo battery?
  A: Discharge the battery completely, submerge it in saltwater for 24 hours, and take it to a recycling center.

• Q: What is the maximum current this battery can supply?
  A: The maximum current is determined by the discharge rate (25C). For a 2500mAh battery, it is 25C × 2.5A = 62.5A.

By following this documentation, you can safely and effectively use the PKCELL LiPo 2500mAh battery in your projects.