[The_bluester (Paul)]

From my memory looking at them a couple of years ago the Telsla battery systems are rated in terms of their deliverable discharge capacity.

They are also lithium ion batteries rather than lead acid so the depth of discharge largely amounts to "Just not to 0% OK"


Apparently some are recycled from Tesla cars as the current demand in the cars is more or less explosive and in the case of a powerwall setup, much more gentle so a battery that is no good in a car is still fine for many years in a less demanding application.

When you consider the acceleration times the Tesla cars are capable of they much be calling on half a megawatt or more for short periods if someone decides to see just how hard it will go! I recall someone building EV sports cars 20 years ago and puching the motor cotnroller technology of the time commenting on the lines of "Nothing much really happens under about a thousand amps"