I am arguing that you can't create the system where only 100% of speed can be achieved by having 100% non-degraded battery. iPhone must have 10-20% security mar

I am arguing that you can't create the system where only 100% of speed can be achieved by having 100% non-degraded battery. iPhone must have 10-20% security margin in battery capacity so when battery degrades it doesn't require degrading performance. That can be achieved by 10% thicker phone, right?