12.8 V 5000mAh Cylindrical Battery 32700-4S

Part 1. What does "32700-4S" mean?

The designation "32700-4S" provides important information about the battery’s construction:

1. 32700: Refers to the size of the cylindrical cells used in this battery pack. Each cell has a diameter of 32mm and a height of 70mm.

What Is a 32700 Battery? A Complete Guide

2. 4S: Indicates that the pack consists of four cells connected in series. This configuration multiplies the voltage of a single cell by four to achieve the overall nominal voltage of the pack.

In this case, the 32700-4S battery pack uses LiFePO4 (Lithium Iron Phosphate) chemistry, known for its safety and durability.

Understanding S and P in Lithium Battery Packs

Part 2. Why is it 12.8V?

The nominal voltage of a single LiFePO4 cell is 3.2V. By connecting four cells in series (4S), the voltage adds up:
3.2V × 4 = 12.8V.
This consistent 12.8V output is ideal for various applications, including RC cars, solar energy systems, and portable power stations, as it delivers stable power over extended periods.

Part 3. Chemistry

The 12.8V 5000mAh battery pack is based on LiFePO4 chemistry (Lithium Iron Phosphate). This advanced chemistry provides several performance advantages:

1. Long Cycle Life: Typically offers 2000 charge-discharge cycles, significantly extending the lifespan compared to other lithium chemistries.

2. Safety: LiFePO4 is inherently more stable, with lower risks of thermal runaway or overheating.

3. Temperature Tolerance: Functions effectively across a wide range of temperatures (-10°C to 80°C for discharge), making it reliable in different environments.

4. Sustainability: This chemistry is more environmentally friendly and recyclable.

These features make LiFePO4 batteries the preferred choice for both consumer and industrial applications.

Part 4. What is 12.8V 5000mAh watt-hour?

The watt-hour (Wh) rating represents the total energy capacity of the battery. It is calculated using the formula:

Watt-hour (Wh) = Voltage (V) × Capacity (Ah).

For this battery:

12.8V × 5Ah = 64Wh.

This means the battery can deliver 64 watts of power for one hour or smaller amounts of power over a longer period, making it versatile for devices requiring steady energy output.

Part 5. Charger

To charge this 12.8V 5000mAh LiFePO4 battery, a 14.6V LiFePO4-compatible charger is required. This ensures proper charging without overvoltage, protecting the cells from damage. Chargers with smart features, such as automatic cutoff and temperature monitoring, are highly recommended for optimal safety and performance.

Part 6. How to charge a 12.8 volt li ion battery?

To safely charge the battery, follow these steps:

1.Choose the Right Charger: Use a 14.6V charger designed specifically for LiFePO4 batteries.

2. Connect Properly: Ensure the charger’s polarity matches the battery terminals (positive to positive, negative to negative).

3. Set Current Limits: For this battery, use a charging current within the range of 0.2C to 1C (1A to 5A).

4. Monitor Temperature: Charge at room temperature (0°C to 45°C) to avoid overheating or reduced efficiency.

5. Unplug When Fully Charged: Most smart chargers will stop charging once the battery reaches 14.6V, indicating a full charge.

Avoid overcharging or using an incompatible charger to maintain the battery’s longevity.

Part 7. Maintenance and care tips

To ensure long-lasting performance of your 12.8V 5000mAh LiFePO4 battery, follow these maintenance tips:

1.Avoid Deep Discharge: Do not discharge the battery below 10.0V, as this can damage the cells and reduce capacity.

2. Store Properly: If not in use for extended periods, store the battery at a 50%-70% charge level in a cool, dry place between -20°C and 45°C.

3. Charge Regularly: Even if unused, charge the battery every 3-6 months to prevent deep discharge.

4. Inspect for Damage: Check for physical damage or swelling before each use. Replace the battery if signs of wear appear.

5. Use a Compatible Charger: Always use a charger rated for LiFePO4 chemistry to prevent overvoltage or undercharging.

6. Avoid Extreme Temperatures: Do not expose the battery to temperatures beyond its operating range (-10°C to 80°C during discharge).

By following these care practices, your battery will maintain its performance and deliver reliable energy for years to come.

This comprehensive guide provides valuable insights into the 12.8V 5000mAh LiFePO4 battery, covering its unique features, technical details, and practical usage tips. Ufine Battery continues to offer customizable, high-performance power solutions tailored to your specific needs.