The battery is SO terrible in the 14 Ultra. With just 240mAh extra, I suspect it will be terrible in the 15 too. The issue with the battery is not the processor, it's the camera system. When the camera is being used the battery falls off a cliff. No matter how amazingly efficient the processor is, it won't help this. I'll wait to see where it's at before I buy now. I want to see a heap of battery tests from multiple sources. I suspect I'm going to end up with the Oppo or Vivo.