How to Use LiPO BATTERY 7.4V 5200MAH : Examples, Pinouts, and Specs

The LiPO BATTERY 7.4V 5200MAH is a rechargeable lithium polymer battery with a nominal voltage of 7.4 volts and a capacity of 5200 milliamp hours (mAh). This battery is widely used in applications requiring lightweight, high-capacity power sources, such as remote-controlled (RC) models, drones, robotics, and portable electronic devices. Its compact design and high energy density make it an excellent choice for projects where performance and efficiency are critical.

• Remote-controlled cars, boats, and drones
• Robotics and automation systems
• Portable electronic devices
• DIY electronics and prototyping
• Backup power for small systems

The following table outlines the key technical details of the LiPO BATTERY 7.4V 5200MAH:

LiPo batteries typically have two types of connectors: a power connector and a balance connector. Below is a description of these connectors:

The balance connector is used for charging and monitoring individual cell voltages to ensure safe operation.

1. Connect the Power Connector: Use the XT60 or JST connector to connect the battery to your device or circuit. Ensure the polarity matches the device's input terminals.
2. Use a LiPo-Compatible Charger: Always charge the battery using a charger designed for LiPo batteries. Set the charger to 7.4V (2S) and a current of 1C (5.2A) or lower.
3. Monitor Voltage Levels: Avoid discharging the battery below 6.0V to prevent damage. Use a voltage alarm or battery management system (BMS) for safety.
4. Balance Charging: Connect the balance connector to the charger to ensure each cell is charged evenly.

• Avoid Overcharging: Never charge the battery above 8.4V.
• Prevent Over-Discharge: Use a low-voltage cutoff or alarm to avoid discharging below 6.0V.
• Handle with Care: Do not puncture, crush, or expose the battery to fire or water.
• Storage: Store the battery at a voltage of 3.7-3.8V per cell (7.4-7.6V total) in a cool, dry place.
• Inspect Regularly: Check for swelling, damage, or unusual heat during use or charging.

To power an Arduino UNO with the LiPo battery, you can use a DC-DC step-down converter to regulate the voltage to 5V. Below is an example circuit and code:

1. Connect the battery's power connector to the input of the DC-DC converter.
2. Set the converter's output to 5V using a multimeter.
3. Connect the converter's output to the Arduino UNO's VIN and GND pins.

// Example code to read a sensor and print data to the Serial Monitor
// Ensure the Arduino is powered via the LiPo battery through a DC-DC converter

const int sensorPin = A0; // Analog pin connected to the sensor
int sensorValue = 0;      // Variable to store the sensor reading

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

void loop() {
  sensorValue = analogRead(sensorPin); // Read the sensor value
  Serial.print("Sensor Value: ");
  Serial.println(sensorValue); // Print the sensor value to the Serial Monitor
  delay(1000); // Wait for 1 second before the next reading
}

1. Battery Not Charging

   • Cause: Incorrect charger settings or damaged charger.
   • Solution: Verify the charger is set to 7.4V (2S) and the current is appropriate (≤5.2A). Check the connections and try a different charger if necessary.

2. Battery Swelling

   • Cause: Overcharging, over-discharging, or physical damage.
   • Solution: Stop using the battery immediately. Dispose of it safely according to local regulations.

3. Device Not Powering On

   • Cause: Low battery voltage or incorrect connections.
   • Solution: Check the battery voltage with a multimeter. Recharge if below 7.4V. Ensure the power connector is securely connected.

4. Uneven Cell Voltages

   • Cause: Imbalanced charging or aging cells.
   • Solution: Use a balance charger to equalize the cell voltages.

Q: Can I use this battery for a 12V device?
A: No, the nominal voltage of this battery is 7.4V. You would need a step-up converter to power a 12V device.

Q: How long will the battery last on a single charge?
A: The runtime depends on the load. For example, a device drawing 2A will run for approximately 2.6 hours (5200mAh ÷ 2000mA).

Q: Is it safe to leave the battery connected to a device when not in use?
A: It is recommended to disconnect the battery when not in use to prevent over-discharge or accidental damage.

Q: Can I charge the battery without a balance charger?
A: While possible, it is not recommended. A balance charger ensures the safety and longevity of the battery by charging each cell evenly.