NMC lithium batteries

[overbyte]

Does anyone have facts about lithium NMC battery chemistry for e-bikes versus LiFePO4? From what I've read, Li-NMC has the best energy density of the currently available lithium battery types. That is, it packs the most energy at the least weight. For example, this battery in a tube enclosure weighs only 7 pounds but holds 36v 10.5 Ah of energy: http://gocarlite.com/Electricbikekitproducts.php?view=productPage&product=17&category=, And this one is 36v 12 Ah in 6.1 pounds: http://www.ampedbikes.com/tubebattery.html.

Any opinions?

 

[Phoebus]

High end NMC, from Dow Kokam:

http://endless-sphere.com/forums/viewtopic.php?t=36280

At it's best, NMC has the best energy density of the lithium chemistries, discharge rates between LiCo and LiFe, and stability similar to LiFe (supposedly).

 

[amberwolf]

EIG:
http://www.eigbattery.com/eng/product/C020.pdf