Passive vs Active Balancing BMS: How to Choose Correctly

Cell inconsistency is the main reason for reduced capacity, shortened cycle life, and unstable performance of lithium battery packs. As a core function of BMS, cell balancing eliminates voltage differences between individual cells to maximize battery pack performance and service life. Many buyers and engineers are confused between passive balancing and active balancing BMS. In fact, neither solution is absolutely better. The correct choice depends on your cell quality, application scenario, cycle frequency, heat condition, and budget.