Recalibration: that sounds like a breach of contract on Nissan's behalf.
To be positive, overall I think Nissan has done a great job. But in this
case, I'd fight back. When you by a leaf, you sign a contract and
recalibrating the way the battery is measured sounds cleanly like a case
of changing the terms of the contract. (For me, it's moot, I'm only one
bar down.) Unless, of course, the contract states explicitly that the
battery must be measured against the current algorithm.
Peri
------ Original Message ------
From: "Cor van de Water via EV" <[email protected]>
To: "Willie2" <[email protected]>; "Electric Vehicle Discussion List"
<[email protected]>
Sent: 04-Oct-16 2:06:10 PM
Subject: Re: [EVDL] To fully charge or not to fully charge that is the
question
Willie,
Not dynamically, just a one-time upgrade (dealer visit required).
Many Leaf owners who lost the 4th bar and thought they qualified for
the
warranty battery replacement were miffed to see the dealer really
enforcing the Nissan requirement that the warranty will only be honored
after the mandatory re-calibration of the 12 battery bar gauge. Most
owners found out that after re-calibration their earlier 4 bar loser no
longer showed 4 bars lost so they no longer qualified unless they would
again see 4 bars lost on the re-calibrated gauge. The first bar does
not
disappear until 15% is lost and each subsequent bar should stand for
6.25% so in theory you need a battery degraded to just over 66% of
nominal capacity to qualify if the gauge will indeed drop to 4 bars
right at that point. But reports I have seen of Ah capacity degradation
suggest that the loss of the 4th bar happens later.
I found it significant that Leafs can lose more than 40% capacity in
about 50k mi while some Tesla drops only 6% in 200k mi.
Of course this is only one sample with a specific usage pattern,
but I highly doubt an expansion of the samples will give different
results, we'll see.
Cor van de Water
Chief Scientist
Proxim Wireless
office +1 408 383 7626 Skype: cor_van_de_water
XoIP +31 87 784 1130 private: cvandewater.info
http://www.proxim.com
This email message (including any attachments) contains confidential
and
proprietary information of Proxim Wireless Corporation. If you
received
this message in error, please delete it and notify the sender. Any
unauthorized use, disclosure, distribution, or copying of any part of
this message is prohibited.
-----Original Message-----
From: EV [mailto:[email protected]] On Behalf Of Willie2 via EV
Sent: Tuesday, October 04, 2016 11:18 AM
To: Electric Vehicle Discussion List
Subject: Re: [EVDL] To fully charge or not to fully charge that is the
question
On 10/04/2016 12:29 PM, Cor van de Water via EV wrote:
on the battery as the Leaf *does* degrade its battery by 40% to
approx
60% capacity in approx 50k mi in warmer climates (that is the point
where Nissan gives a warranty battery replacement, even though they
promised 70% but re-calibated the battery to lose the 4th bar around
60%
capacity and triggering the warranty if it occurs within the warranty
limits for time and mileage.)
When I first got my Leaf, I was astonished at how crappy the
instrumentation is/was. Coming from the conversion world, I expected
to
see, or find out, how much energy went into the battery and how much
came out. Instead, I had these twelve "bars". Unacceptable
granularity. Later, I found the "bars" were not even of equal value.
After some pondering, I came to the conclusion that Nissan did things
in
that way to hide information from their customers. What other
explanation could there be?
Even more astonishing is how Leaf owners accept the situation and speak
of almost meaningless "bars". I'm not surprised to learn that Nissan
dynamically recalibrates "bars" to manage their warranty threshold.
_______________________________________________
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
Read EVAngel's EV News at http://evdl.org/evln/
Please discuss EV drag racing at NEDRA
(http://groups.yahoo.com/group/NEDRA)
_______________________________________________
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
Read EVAngel's EV News at http://evdl.org/evln/
Please discuss EV drag racing at NEDRA
(http://groups.yahoo.com/group/NEDRA)
_______________________________________________
UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
http://lists.evdl.org/listinfo.cgi/ev-evdl.org
Read EVAngel's EV News at http://evdl.org/evln/
Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
