For grid applications, I am looking for typical ramp rate of Li-ion batteries. I am specifically interested in batteries used for frequency management. So suppose I have a 1MW grid connected battery and the grid sees a disturbance in which there is loss of generation. What kinds of maximum ramp rate can I expect from Li-ion battery in say one second? Is it 30% of rated capacity per second?
Are there metrics like 0 to 99% rated capacity in N seconds? What are typical values of N for Li-ion?