I think I'd much rather have our warranty than the one Nissan offers on the Leaf
From Green Car Reports "The warranty is designed to protect against battery capacity loss in the first five years or 60,000 miles, for U.S. customers.
Should the battery capacity gauge fall below nine bars (from twelve) in that period, Nissan will repair or replace the battery under warranty with a new or remanufactured unit, "to restore capacity at or above a minimum of nine bars."
Nine bars signifies remaining capacity of approximately 70 percent. Palmer confirms that this warranty is still subject to the same terms, conditions and exclusions found in the existing battery warranty.
The new warranty coverage reflects recent issues experienced by Nissan Leaf owners living in warmer climates."
Our warranty gives us a NEW battery, not a remanufactured one which only restores the capacity to 70% or better. Ours is 10 year, 100K and not the 5 year, 60K that Nissan is offering. You have a 40% capacity loss on your Leaf, Nissan repairs the pack so you only have a 30% or less capacity loss - Whoopty Doo!!
Nissan only offered this because there have been numerous instances of capacity loss of 30% or greater, especially for cars in hot climates. I haven't read of a single instance where a Mitsu battery has had a capacity loss of 30% so far - Not one. I think to date, every warranty replacement has been to correct for a bad cell which does not allow the pack to charge properly - THAT would be the biggest concern for me. I'm not terribly worried about seeing a 30% loss on either of my cars . . . . I don't drive a Leaf. They need an enhanced warranty, but 5 years, 60K only restoring it to 70% or more sure wouldn't make me sleep any better if I owned a Leaf
There was a description in this forum of one i-MiEV that lost more then 30% in two years, one from Las Vegas(viewtopic.php?f=23&t=2648&hilit=Las+vegas
). That was not a single cell failure, that was general loss of capacity. And mine, if it don't has 30% degradation, is very close to it (last number of current battery capacity is 35 Ah, from june 2015). And I know one Leaf here in Portugal, that lost 4 bars in 3 years, and they simply gave him a new one (and not restoring just one bar). So, Nissan didn't restore 70% capacity, they restore 100% capacity. I think the i-MiEV should have, like the Leaf, the bars of the current capacity, and they should give a new battery for those who lost 30% in 5 years, like what happens with the Leaf. If I owned a Leaf, maybe I was near of getting a new battery...
But I prefer the i-MiEV, now I know ways of preserving the capacity of its battery and the rate of loss of capacity decreased to around 3%/year (from 8% in the first three years), what would be not so easy with the closed pack of a Leaf.
Riding an i-Miev since 4/2011 in Portugal, 100.000 kms.