[Oeva-list] MIT research: Lithium Iron Phosphate batteries

[Graunke, Gary]

My A123 cells *already* can charge in 15 minutes, per manufacturers recommendations for fast charge (the slow charge is 45 minutes).

The only issue is getting a 40KW charger to charge them. This has the same service as my entire house (200A).
And if I put in 4 more batteries (adding to the 6 I have already) to get to 100 mile range, I would need more like 56KW.

So the batteries already can handle level 3 charging, but the level 3 is a bit further down the road.

Gary

________________________________
From: oeva-list-bounces at oeva.org [mailto:oeva-list-bounces at oeva.org] On Behalf Of Philip Kollas
Sent: Monday, March 16, 2009 1:06 PM
To: oeva-list at oeva.org
Subject: [Oeva-list] MIT research: Lithium Iron Phosphate batteries

Did anyone else hear the NPR Science Friday broadcast on 3-13-09, in which an MIT professor of materials & engineering talked about their discovery?  He said they had found that tweaking lithium with iron phosphate (iron phosphate being the same material that battery giant BYD is now going with for their rechargeable cars) made for a much-quicker recharge time as well as greater acceleration.  The recharge time went from hours down to about a minute.

If this is true and the new material can be incorporated into an affordable technology for EV batteries, it seems we would have overcome one of the common objections to EVs (lengthy recharge time).

Thanks, Philip Kollas
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