The Volt's cells are rated up to 20C but in the actual car they draw a max of about 7C in the Volt and drew a max of about 9C in the 2016 Caddy ELR.What are you talking about? Maybe you should go look at some battery cell data sheets. P100D max discharge is just under 580 kW, or near 6C. The Volt's pack can handle 20C.