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I notice a big difference in the regenerative braking between my previous 40kW and the new 60kW. My 40kW used to stop much quicker. Did anybody noticed this after upgrading from a lower kW to upper kW battery car?
Do you mean 10% or 100%? If 10% yes, I've never noticed any difference as long as there was enough space left in the battery and the battery was warm enough. If 100% or close to it, regen will reduce or stop since there will be nowhere for the electricity to go.