Nissan responds to Leaf owners' massive test in battery aging case
The controversy over Nissan Leaf battery pack capacity loss is getting deeper, following a statement from Nissan published through Green Car Reports, and a response published by EV Owner Tony Williams writing on InsideEV's. Nissan's response that range loss is occurring for Leaf's that have been driven a long distance, but Williams counters with evidence that contradicts Nissan's claims.
As TorqueNews noted earlier, a group of Phoenix-are Nissan Leaf owners staged a test last weekend to verify claims of battery pack capacity loss. This lost capacity would result in a shorter driving range than Nissan claims for the Leaf, and if true would make the Leaf a less-useful car. The issue has been under discussion on the MyNissanLeaf forum for months, leading Nissan to issue a statement saying they were studying the issue.
In July, Nissan brought seven Leaf's to its technical unit at its Arizona Testing Center for a technical assessment. Nissan collects data from each Nissan Leaf and has found that the 450 Leaf's currently in Arizona are on a path which will result in 76% capacity after five years, rather than the 80% capacity Nissan had expected. Nissan's published claims of expected range loss over time were based on an average driving distance of 12,500 miles/year in climates similar to Los Angeles. The seven Leaf's examined closely by Nissan had all been driven much further than the average, some well over 20,000 miles/year.