The BBC News website is carrying a report about a new way of making lithium batteries which could massively speed up their charging time. It's unclear quite how long the charging would take with the new batteries: the BBC report talks about "20 seconds" in comparison to "6 minutes", so they clearly weren't testing a full capacity battery. However, if we scale that up, a 90 minute charge on current batteries would be reduced to 5 minutes with the new battery type.