Why would discharge rate be important? I'm assuming discharge rate as in "ability to deliver high current" here. If you install capacities to serve more than a

Why would discharge rate be important? I'm assuming discharge rate as in "ability to deliver high current" here. If you install capacities to serve more than a few minutes or hours, even the weakest batteries won't be challenged by grid peaks. If you mean self-discharge, and the importance of that being low, yeah, that might become a factor to keep an eye on once we reach capacities to solve seasonal cycles. But even then it's nothing more than another element in what makes up the total charge/discharge efficiency.