What are you doing differently? Unless you’re pulsing your charging or otherwise varying the current rapidly, then it seems that all you can really do is vary the current as a function of temperature, state of charge, and maybe some other variables. At the end of the day, if you’re going to deliver energy e in time t, you need average power e/t, and the fancier your curve, the more your peak power will exceed your average.

(And if you don’t want to overhead the cables or the connector, you care about current squared, giving you an added incentive to charge at near constant current or perhaps to charge some cells at a different rate than others.

What’s the trick here?