> I think smartphone makers will make the battery rectangular They are still rectangular. I actually thought they are more irregular, trying to use the availab

> I think smartphone makers will make the battery rectangular They are still rectangular. I actually thought they are more irregular, trying to use the available space more efficiently, but e.g. Samsung S23 Ultra battery looks like a normal rectangle. Their casing is much thinner, though, since they don't have to assume rougher handling by an end consumer. I wonder if perhaps there will be two batteries of the same shape - the non-replaceable will have a thinner casing, but with a somewhat higher capacity.