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

[Myles Twete]

Gary-

 

You need a home dump pack then.obviates the need to suck multi-KW power from
your grid.

 

-Myles

 

From: oeva-list-bounces at oeva.org [mailto:oeva-list-bounces at oeva.org] On
Behalf Of Graunke, Gary
Sent: Monday, March 16, 2009 2:04 PM
To: Philip Kollas; oeva-list at oeva.org
Subject: Re: [Oeva-list] MIT research: Lithium Iron Phosphate batteries

 

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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