I guess a technology writer understands “format war” and spun the article this way, giving it a subtitle of ‘Prius-ray vs Dominant Volt Drive?‘ In any case they say that the Japanese automakers are presenting for consideration a potential “worldwide standard” for automotive Li-ion batteries and related technologies. It may be a bit too early to standardise on specific Li-Ion chemistries so hopefully the standard they propose will be flexible enough to accomodate the variety of Lithium based battery chemistries which are being developed.

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