Are you constantly anxious about your phone's battery percentage? We sit down with CNET experts to discuss the latest in smartphone battery testing, why your lithium-ion battery naturally degrades over time, and simple tips to keep it healthier for longer. YouTube Chapters 0:00 - The Battery Anxiety Problem 0:53 - Which Phones Have the Best Battery Life? 3:52 - Why Phone Batteries Degrade 5:18 - Tips to Extend Your Phone's Battery Life 6:00 - The Future of Batteries: Silicon Carbon 7:34 -