A. Gradual capacity loss is normal and expected in all lithium-ion batteries with time and use.

ENGADGET: Nissan upgrades US Leaf warranties, will 'restore' batteries that lose too much charge

I'm speaking, of course, about concerns regarding the rate of battery capacity loss in the Nissan LEAF's Lithium-ion battery.

ENGADGET: Nissan upgrades US Leaf warranties, will 'restore' batteries that lose too much charge