LiFePO4 battery active equalization, also known as active equalization or lossless equalization, is a technique used in battery management systems (BMS) to balance the voltage across all cells in a battery pack by transferring energy from higher-energy cells to lower-energy ones. This method effectively equalizes the cells without significant energy loss.

• Energy Transfer:
  Active equalization works by redistributing energy from cells with higher charge levels to those with lower charge levels, achieving voltage balance across the entire battery pack. This process is highly efficient, with minimal energy loss.
• Continuous Operation:
  Active equalization operates continuously, regardless of whether the battery is charging, discharging, or idle. It activates whenever the voltage difference between cells exceeds a predefined threshold and continues working 24/7 until the voltage difference falls within the acceptable range.
• High Balance Current:
  Unlike passive balancing, active equalization can support higher balance currents, typically ranging from 1 to 2 amps. This is because the process does not generate significant heat, allowing for larger currents without thermal management concerns.

Active equalization is particularly well-suited for large-capacity battery packs due to its ability to operate continuously and handle higher currents, ensuring optimal performance and longevity of the battery system.