I have a Model 3 and charge at home. I know that when charging, as the battery gets closer to 100% it takes longer to charge, e.g. going from 80% charge to 100% takes a lot longer then, say, from 40% to 60%. My question is does this mean that it will also take more electricity to go from 80% to 100% charge, thus costing more money per Kw hr to charge?