How is the DC fast charging curve optimized for battery longevity?

DC fast charging curves balance speed and battery health by controlling power based on: SOC level (high power at low SOC, tapering as SOC increases to prevent lithium plating), battery temperature (limiting power when cold or hot), cell voltage (reducing current as cells approach upper voltage limit), and cumulative fast charge history. Typical curves show constant power initially, then constant current, then constant voltage phases. Advanced algorithms may use real-time impedance measurements and predictive models. Optimized curves can achieve fast charging while minimizing degradation impact.