Passive Cell Balancing

As a method of cell balancing, passive cell balancing uses the battery management system to equalize the charge across battery cells by wasting excess energy from higher-voltage cells as heat through resistors. Passive cell balancing is simple, cost-effective, and reliable for ensuring all cells reach similar voltage levels to extend the overall lifespan, making it ideal for small-scale applications and consumer goods. However, it is energy inefficient, converting the excess energy into heat.