Nissan Leaf battery pack didn’t changed so much from 2011 to 2020.
It’s dimensions has been almost the same during past 10 years, but Lithium batteries technology improved so much since them.
This what allowed Nissan to offer 24, 30, 40 and finally 64 kWh packs in the same space during this years.
It’s basically an airtight container holding 24 or 48 cell modules from AESC.
This closed container does not perform well with heat management, so fast charging and hot weather causes premature damage to AESC cells.
Unfortunately, there’s no easy way to refrigerate the Nissan Leaf’s battery pack, so replacing batteries with Nissan AESC cells is always a time bomb in hot weathers or intensive users.
Another problem is the Nissan prices policies about battery replacements. They are extremely expensive and normally, does not allow retro upgrade your battery pack to newer lithium chems.
The cells used by EV Battery Rebuilds have a great energy density, but also and more important, can handle up to 55ºc degrees without permanent damaging the cell.
That’s great for fast charging, hot weather and longevity of the battery pack!