David Howey runs the Battery Intelligence Lab at the University of Oxford. In this interview we do a deep dive into battery charging curves, from determining the state of charge, to what the core problem is with charging, to tradeoff decisions, and does lfp really like to be charged to 100%?


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Timeline
00:00 Introduction
01:09 How is Charge State Determined?
08:35 Challenges with Iron vs Nickel Batteries
14:29 Sodium Ion Batteries
17:24 The Charging Curve // The Key Variables
26:56 The Charging Curve // Building the Model
30:26 Is there a Discharge Curve?
31:34 The Charging Curve // TradeOff Decisions
37:48 Does LFP ‘Like’ to be Charged to 100%?
47:01 What Causes Rapid Changes in Charge State?
49:01 Any Improvements Coming in Charging Software?
52:19 What David is Doing and How to Follow Him

Intro Music by Dyalla: Homer Said