Nissan To Modify Its Leaf Batteries For Increased Life
|   Friday, December 13, 2013
Nissan has announced that it will change the chemical composition of the lithium-ion battery installed in the Leaf model. Nissan hopes to solve problems in areas with high temperatures where battery life drops significantly.

The best selling electric model is the Nissan Leaf. That does not mean that the Japanese model is free of issues. More customers in Arizona and New Mexico have complained that the lithium-ion battery is degrading faster than other copies sold in areas with temperatures are not so high.


After investigating the situation, Nissan found that high temperatures and arid climate could negatively influence the battery life. In this situation, most owners will receive new batteries.
To avoid such problems, Nissan promises to change the chemical composition of the battery with new elements, which are still pending approval by the management development department.

The changes in composition should make the lithium-ion battery more resistant to hot-weather aging, according to Billy Hayes, vice president for Nissan's global electric vehicle business.

"We're working on an improved chemistry to improve the longevity of the batteries, especially in these prolonged extreme heat situations," Hayes said for journalists at the Tokyo Motor Show last month.
"We're optimistic that we would use that for replacements going forward."

If the new chemical solution will be approved, Nissan will start producing the modified batteries in the first half of next year at its plant in Smyrna, USA.
Hayes clarified that the new composition for the lithium-ion batteries will not extend its autonomy, its performances remaining the same as now.

Since its debut on the market, Leaf had suffered two major changes at battery level: one aimed at reducing weight and another aimed at reducing production costs. In the next two years, in addition to changing chemical composition, intended to prolong life in areas with a hot climate, the Leaf's battery will see two more improvement operations.
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