According to foreign media reports ，recently，the Ministry of Japan economic and industry plans to require auto manufacturers to display the life of battery which is built in the electric vehicle，so that drivers can understand the attenuation of re-use of aging lithium ion batteries，and strive to
establish an appropriate capacity evaluation mechanism，and promoting the reuse of batteries while cultivating the second-hand electric vehicle market.
That plan will be announced as early as September，and be implemented formally during this year. All auto company will respond positively，and will display the remaining capacity of battery compared to it of a new car.
Take the Nissan pure electric vehicle“leaf”for an example，it will show the fully charged capacity by 12-level scale to compare with the battery of new car. On the other hand, there are some pure vehicles do not show the attenuation of electric vehicle as “leaf”. The minister of Japan economic
and industry required all the auto companies should show the attenuation of car battery or compare the endurance mileage after charging once to it of a new car.