First i've heard of 80-20 for the leaf. It does have a charge time setup
display which allows you to specify 80% charging. But this doesn't sound
like the same thing. Peri
-----Original message-----
From: Thos True <[email protected]>
To: Electric Vehicle Discussion List <[email protected]>
Sent: Sat, Jan 19, 2013 14:44:06 GMT+00:00
Subject: Re: [EVDL] Charging Leaf at 20amp receptacle.
Interesting idea. I recall the early VWs (and Porsches) with the "reserve
function".
According to one Nissan engineer that I spoke with in 2011, the Leaf is
designed to not charge above 80% nor discharge below 20%, which corresponds
to the on on-board display's full and empty. (this corresponds with the
guidelines of most Lithium manufacturers, and therefore makes a lot of
sense, as a method to preserve the batteries). It has been my experience
with electric vehicles that if you pull out of traffic and wait 20 minutes
or so, that you can restart the vehicle and limp to an outlet somewhere. (
I have yet to need to do this with our Leaf, as the instrumentation has
always erred on the side of more range rather than less. My home built
projects never seemed to have the desired accuracy.
-Tom
On Sat, Jan 19, 2013 at 3:21 AM, EVDL Administrator <[email protected]> wrote:
On 18 Jan 2013 at 21:32, Cal Frye wrote:
> I wouldn't mind it if it worked like the really early Beetles - the
> range meter would reach zero at, say, 20% SOC, and you would have to
> physically throw a switch or something to discharge it any further. I
> would locate the "extended discharge switch" under the hood...
My father had one of those VWs, a 1961, with no gas gauge and a reserve
lever on the firewall. I think something similar is an outstanding idea
for
an EV. It shouldn't be at all tough for a manufacturer to implement -
just
program it into the BMS.
David Roden - Akron, Ohio, USA
EVDL Administrator
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