Inductors can transform voltage, so balancing current is higher, balancing time shorter. It works around an issue that the most common active balance strategies slow down as the voltage difference decreases. Often uses a small processor that can drain the first few cells, though. Example: https://www.amazon.com/dp/B0B3D5JCRC

Flying capacitor active balancers, on the other hand, are cheaper and slower to balance, and don't need a processor since they just randomly connect everything in turn. Example: https://amzn.to/3UK4j3w