Ah well I do a lot of coding for work, so I prefer to do something different for a hobby! It's from an old Eddie Izzard joke about the slow and unnoticed collapse of the Austro-Hungarian empire, it was "like a flan in a cupboard". Maybe I should update, I must have been using that nick since '99! Somewhere I have a different data sheet which describes "Optimal charge" as 0.2C, and "Maximal charge" as 0.5C. Regen events are of course quite short (except heading down a mountain) but temperature monitoring will allow you to reduce CCL if required (if you have cold weather it should also be reduced).