Charging rate—also known as C-rate—describes how quickly a battery is charged relative to its nominal capacity. It is a key parameter in battery system design and operation, affecting charging time, efficiency, thermal behavior, and battery lifespan.
Why It Matters:
Design Limitation: Different chemistries tolerate different max charging rates (e.g., LFP vs. NMC).
Battery Health: Frequent high C-rate charging accelerates lithium plating, capacity fade, and cell swelling.
Charging Infrastructure: Determines compatibility with fast chargers or grid systems.
