Battery health on a 74wh battery at 102%

Just curious if 102% is a good battery health for the rog ally z1e with the upgraded battery. I find it weird since it's above 100% but maybe that's because 74wh almost doubled the normal battery of the rog. But I also find it weird cus if it's almost double the original battery, shouldn't the battery health be at around 150-200%? These small things keep bugging me lol.