EV Battery Q&A: Jeff Dahn Answers Your Questions on Charging, Degradation & Lifespan

Should you charge to 80% or 100%? Does fast charging damage your battery? Dr. Jeff Dahn answers real viewer questions on EV battery health and longevity. JOIN EV Society and help build sustainable transport https://evsociety.ca/ EVS members enjoy discounted car (& home) insurance. Get a free, no obligation quote: https://www.dulibaninsurance.com/auto... If you missed Dr. Dahn's last presentation on Canada Talks Electric Cars watch it now:    • How Long Do EV Batteries REALLY Last? — Dr...   Referenced during video Peak Power V2G    • Will EV Charging Break the Grid? with Matt...   Canada Talks Electric Cars Previous Episodes:   • EV Society Webinars-Full Webinars   Shout out to Jason and Engineering Explained for promoting Jeff's last video with us:    / @engineeringexplained   0:00 Intro & Welcome 1:40 Today's Topics Overview 2:40 NMC Batteries: How Charging Range Affects Longevity 5:09 Real Data: Years of Lab Testing & What It Means for You 9:20 Practical Charging Advice: The 70–80% Rule 9:46 High-Nickel NMC & Why 80% Matters Even More 16:21 LFP Batteries: Why Charging to 100% Is Fine 17:51 Why LFP Loses Range Accuracy (Flat Voltage Curve) 20:14 Vehicle to Grid (V2G): How It Works & Canada's Progress 22:38 Second Use EV Batteries: A Growing Industry 25:17 Q&A Begins 29:00 Q: Why can't the car just manage charging automatically? 31:51 Q: Why did LFP take so long to reach EVs? 33:28 Q: Do EV batteries really need replacing every 10 years? 39:27 Q: Blood Cobalt — Is It Still an Issue? 45:50 Q: Are Canadian battery factories obsolete before Solid State? 52:13 Q: Is Jeff still funded by Tesla? 53:39 Closing & Next Episode