Widespread use of Li-ion batteries in consumer products led to rapid increase in their energy and power densities in the last fifteen years with EV applications as the next frontier. Lithium ion batteries may reach 300 - 400 Wh/kg and 750 -1000 Wh/l in the next 5-10 fifteen years making ～200 mile BEV possible. Battery Energy is ultimately limited due to chemistry constraints and Moore's Law does not predict its progress. Cost remains major huddle to overcome for widespread EV use. Long-term: New cathodes with reversibility for multi-electron reactions via insertion (or displacement reactions) for super high energy density batteries.
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