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Mon, 27 Feb 2012, 12:43pm Envia Claims ‘Breakthrough’ in Lithium-Ion Battery Cost and Energy Density »
Dolphyn
EExpert
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Registered: Aug, 2008
Last visit: Thu, 08 Mar 2012
Posts: 227

Here's an interesting graph:
http://enviasystems.com/images/45ah-cells.png
It appears to lose its 45ah capacity after just a few cycles, so it seems like a stretch to describe this as a 45ah cell. If you'll settle for 25 AH, it should be good for 450 cycles or so. This makes me think that for all practical purposes, they've only achieved 200 watt-hours per kilogram, but maybe the longevity will improve before it comes to market.

Source: http://enviasystems.com/announcement/

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