...@bellsouth.net
Sent: Thursday, June 4, 2015 9:37 PM
Subject: Re: [EVDL] Success!
Actually, those procedures were developed by customer feedback mostly!
As some of us started reducing the ending voltage so did the spec
sheets of TS, CALB, et al. Do you have references for those procedures
being
/This testing is not much value when trying to compare cells ability to last
a long time./
That wasn't the point. He was just showing that the CC/CV transition
voltage in the manufacturer charging spec is for the charging current in the
spec, and you can go higher without causing immediate damage
At room temperature the cells may be fine at high SOC. Since so much
traditional cycle testing is done at room temps, they never spend much time
at the condition that actually causes problems. This testing is not much
value when trying to compare cells ability to last a long time.
Mike
On
The spec for CALB cells is CC to 3.6V per cell then CV to C/20. When I do a
full charge I charge my 180 Ah CALB SE cells at CC to 3.53V per cell
average, or about 127V pack voltage, then the charger holds a pack V of
about 126V to C/20, or 9A, and terminates. After several hours at rest the
pack
Sent from my iPhone
On Jun 3, 2015, at 11:27 PM, David Nelson gizm...@gmail.com wrote:
On Wed, Jun 3, 2015 at 10:50 AM, Paul Dove via EV ev@lists.evdl.org wrote:
Yes I suppose this is confusing. Let them ion batteries are charged
according to a procedure. Let's take lithium iron
Sorry about that my dog hit my arm and hit send by accident. Sure one can
develop their own procedure however, these procedures were developed in a
laboratory and the batteries dissected afterwards to see the effect. My point
was anything over 3.38 V is charging the cell
Sent from my iPhone
Thanks, everybody, for all the advice.
Sunday evening when I had dinner at their place, I set the car to only charge
to 80%. I also set the timer so that it'll finish charging by 6:00 am, thinking
that that was when their time-of-use plan kicked up to the higher rate. They
actually don't have
Absolutely never trickle charge any type of Lithium Ion battery
Sent from my iPhone
On Jun 3, 2015, at 11:12 AM, Ben Goren via EV ev@lists.evdl.org wrote:
Thanks, everybody, for all the advice.
Sunday evening when I had dinner at their place, I set the car to only charge
to 80%. I also
Paul,
What is the reasoning there? *IF the cut off voltage is not exceeded* (and
it is low enough) then there should be no problem with very low current
charging.
However, to many people trickle charge means an unmanaged charge that
continues beyond a cut off point. You will definitely ruin Li
On Wed, Jun 3, 2015 at 10:50 AM, Paul Dove via EV ev@lists.evdl.org wrote:
Yes I suppose this is confusing. Let them ion batteries are charged according
to a procedure. Let's take lithium iron phosphate for example.
According to the procedures you charge to 3.65 V constant current. Then you
Absolutely never trickle charge any type of Lithium Ion battery
Nissan refers to their included Level 1 EVSE as a trickle charger. Charging is
still completely under control of the car's BMS.
I'm not sure why Nissan says it's not for routine use, but it doesn't hurt the
car. I suspect
Yes I suppose this is confusing. Let them ion batteries are charged according
to a procedure. Let's take lithium iron phosphate for example.
According to the procedures you charge to 3.65 V constant current. Then you
hold the voltage at 3.65 and taper the current to C/20.
Sometime later The
Lee, your point is very well taken. Tesla has a fusible link on every one
of their 7000 cells, for example. I suspect they have all manner of
software and hardware protection beyond that. They have billions on the
line.
On Mon, Jun 1, 2015 at 11:50 PM, Lee Hart via EV ev@lists.evdl.org wrote:
: Re: [EVDL] Success!
Yes, I am familiar with some of those guys from endless sphere, but they are
young males. You remember what that was like right? Completely invulnerable,
more testosterone than brains, get a good laugh out of almost burning the house
down...besides they likely all rent
Yes, I am familiar with some of those guys from endless sphere, but they are
young males. You remember what that was like right? Completely
invulnerable, more testosterone than brains, get a good laugh out of almost
burning the house down...besides they likely all rent and they are using
small
In a phone conversation, Dr. Dahn told me that LFP starts deteriorating a
104°F when fully charged.
You can simply not charge fully. Exactly how not fully? I don't know.
Also there may be differences depending on the form factor, source of the
electrode, electrolyte compositions, and so on.
No
Yes, I am aware of that. For about 5 years I have been advising people not
to charge to over around 3.45V which is about where the exponential increase
in the curve starts at typical charge currents. I published a number of
cell measurements and charge curves around that time showing there is
] On Behalf Of Michael Ross via EV
Sent: Monday, June 01, 2015 12:27 PM
To: tomw; Electric Vehicle Discussion List
Subject: Re: [EVDL] Success!
No one I know of charges fully.
The eBike and light EV crowd are not so fortunate. (The area I am most
concerned with.) They typically buy no name packs with, BMS
No one I know of charges fully.
The eBike and light EV crowd are not so fortunate. (The area I am most
concerned with.) They typically buy no name packs with, BMS of unknown
function and provenance, and chargers with all the stickers removed and
unknown internal tweaks.
My first off the
[mailto:ev-boun...@lists.evdl.org] On Behalf Of EVDL Administrator via
EV
Sent: Monday, June 01, 2015 7:47 PM
To: Electric Vehicle Discussion List
Subject: Re: [EVDL] Success!
On 1 Jun 2015 at 12:05, Michael Ross via EV wrote:
This is complicated by the general rule not to ever, ever charge Li
Cor van de Water via EV wrote:
I don't charge my car in the living room, but the attached garage is
just a layer of sheetrock removed from the living room... In there
are a large number of CALB 180Ah cells...
Our ICEs all have tens of gallons of highly flammable gasoline in them.
This sits in
I wasn't speaking of smaller cells like phones. I guess the PC have been
sorted out.
I was thinking specifically of EV packs that are home built or otherwise
DIY'd.
If there is a malfunction you may burn it down. I am sure some other folks
will chime in. I am looking at the book Battery
On 1 Jun 2015 at 12:05, Michael Ross via EV wrote:
This is complicated by the general rule not to ever, ever charge Li ion
cells in your residence.
Good grief, why not? In our house we regularly charge 3 portable computers,
2 mobile phones, a mi-fi router, and a e-scooter. Every one of them
Discussion List
Subject: Re: [EVDL] Success!
On 1 Jun 2015 at 12:05, Michael Ross via EV wrote:
This is complicated by the general rule not to ever, ever charge Li
ion cells in your residence.
Good grief, why not? In our house we regularly charge 3 portable
computers,
2 mobile phones
So, Dad just drove Mom home in a 2013 Leaf. ~12k miles, California vehicle;
couldn't tell it from new. There was one bar missing from the charge gauge; the
numeric meter read, 98%.
Everybody's excited. It should be well and truly perfect for them.
One thought I had that I'm hoping somebody
money...
Peri
-- Original Message --
From: Ben Goren via EV ev@lists.evdl.org
To: Electric Vehicle Discussion List ev@lists.evdl.org
Sent: 31-May-15 12:03:27 PM
Subject: [EVDL] Success!
So, Dad just drove Mom home in a 2013 Leaf. ~12k miles, California vehicle;
couldn't tell
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Hash: SHA1
On 05/31/2015 10:33 PM, Ben Goren wrote:
On May 31, 2015, at 1:12 PM, Jay Summet via EV ev@lists.evdl.org
wrote:
The 2013 battery modules do have more air holes in them for
passive thermal heating than the 2011/2012 modules.
That sparks
On May 31, 2015, at 1:45 PM, Charles Galpin cgal...@lhsw.com wrote:
Ben, do you mind sharing how much they paid? Leaf’s are getting pretty cheap
here too. There is a 2012 SV with 15k miles for $11k locally which is calling
my name.
The charge on my credit card -- including all taxes and
On May 31, 2015, at 1:46 PM, Jay Summet j...@summet.com wrote:
but proably not at all
worth the time/effort.
Ah, well. 'Twas a thought
My understanding is that the 20%-80% range is the
safe range.
Certainly makes things easier...take the time to charge to 80%, program the car
to
. Sigh, all of these things cost money...
Peri
-- Original Message --
From: Ben Goren via EV ev@lists.evdl.org
To: Electric Vehicle Discussion List ev@lists.evdl.org
Sent: 31-May-15 12:03:27 PM
Subject: [EVDL] Success!
So, Dad just drove Mom home in a 2013 Leaf. ~12k miles, California
ev@lists.evdl.org
Sent: 31-May-15 12:24:39 PM
Subject: Re: [EVDL] Success!
Not to mention the fact that using a Battery heat it. Charging also=20
causes it to heat so using the battery while charging would beat the=20
battery even more.
Sent from my iPhone
On May 31, 2015, at 2:13 PM
In Arizona, an evaporative cooler is very effective most of the year and is
ideal for a garage. Even on the hottest days, 95F air out of the swamp
cooler is better than nothing, and you'd still get much cooler air at
night. Or, run the window a/c instead on the hottest/humid days.
money...
Peri
-- Original Message --
From: Ben Goren via EV ev@lists.evdl.org
To: Electric Vehicle Discussion List ev@lists.evdl.org
Sent: 31-May-15 12:03:27 PM
Subject: [EVDL] Success!
So, Dad just drove Mom home in a 2013 Leaf. ~12k miles, California
vehicle; couldn't tell it from
in, thus drawing line current, not battery.
-- Original Message --
From: Paul Dove via EV ev@lists.evdl.org
To: Electric Vehicle Discussion List ev@lists.evdl.org
Sent: 31-May-15 12:24:39 PM
Subject: Re: [EVDL] Success!
Not to mention the fact that using a Battery heat
On May 31, 2015, at 1:12 PM, Jay Summet via EV ev@lists.evdl.org wrote:
The 2013 battery modules do have more air holes in them for passive
thermal heating than the 2011/2012 modules.
That sparks another interesting thought...would there be any particularly good
place to position a box fan to
Congrats on the new LEAF. There were some significant improvements in
the 2013 model year (search the EVDL for comments on LEAF version
1.5). There were changes to instrumentation, battery chemistry, regen,
and other features that early adopters of 2011/12 versions had been
requesting.
You
drawing line current, not battery.
-- Original Message -- From: Paul Dove via EV
ev@lists.evdl.org To: Electric Vehicle Discussion List
ev@lists.evdl.org Sent: 31-May-15 12:24:39 PM Subject: Re:
[EVDL] Success!
Not to mention the fact that using a Battery heat it. Charging
also=20
You could try using LeafSpy to check the battery condition.
https://play.google.com/store/apps/details?id=com.Turbo3.Leaf_Spy_Lite
Peri mentioned ventilating, but I would run it only when outdoor air
temps are at least 5 degrees below indoor air temp. Night time
pre-cooling for the following
@lists.evdl.org
Sent: 31-May-15 3:38:06 PM
Subject: Re: [EVDL] Success!
Ben Goren via EV wrote:
They might be open to keeping the window A/C unit in the garage for
the purposes of keeping the batteries cool. Seems like that might be
the only other measure worth considering.
I live in Minnesota
a split AC and have
been very happy with it.
Rush
Tucson AZ
-Original Message-
From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Joe via EV
Sent: Sunday, May 31, 2015 2:20 PM
To: Electric Vehicle Discussion List
Subject: Re: [EVDL] Success!
In Arizona, an evaporative cooler
)
To: Electric Vehicle Discussion List ev@lists.evdl.org
Subject: Re: [EVDL] Success!
In Arizona, an evaporative cooler is very effective most of the year and is
ideal for a garage. Even on the hottest days, 95F air out of the swamp
cooler is better than nothing, and you'd still get much cooler air
Ben Goren via EV wrote:
They might be open to keeping the window A/C unit in the garage for
the purposes of keeping the batteries cool. Seems like that might be
the only other measure worth considering.
I live in Minnesota, where we have the opposite problems with our
garages -- keeping them
On 05/31/2015 02:03 PM, Ben Goren via EV wrote:
So, Dad just drove Mom home in a 2013 Leaf. ~12k miles, California vehicle; couldn't tell
it from new. There was one bar missing from the charge gauge; the numeric meter read,
98%.
Everybody's excited. It should be well and truly perfect for
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