The fragility -- and dangers -- of lithium ion batteries for electric cars came up again at the Automotive News Europe Congress in Paris when DHL's head of automotive logistics pointed out the difficulties of transporting them.
Not only are they heavy, they also are classified as "dangerous goods" when flown, Fathi Tlatli told us last week.
Used battery packs can't be flown by air at all. They must be transported by road.
DHL has had to develop special packaging to carry batteries to protect against temperature fluctuations, shocks and explosions, Tlatli said.
This fragility was at root of Mitsubishi's recent recall of 4,313 plug-in hybrid versions of the Outlander SUV. In one instance the lithium ion battery pack caught; in another it melted.
The problem was traced back to the way the batteries were handled in the factory, where some packs had been dropped while others were damaged in an excessively forceful screening process. The supplier, Lithium Energy Japan, said it had come up with a solution to the problem in May.