Nissan LEAF - General

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#1882063 11-Oct-2017 19:45

k14:

Going by some of the tradme auctions there seems little need to be concerned about battery degredation. Here is a 2013 model that has done 57000kms and it still has 12 battery bars left. It sounds a bit too good to be true? Anyone seen a Leaf with over 50000km and still 12 battery bars left?

My 2016 30kWh LEAF is now a hair short of 42,000km and the battery is 93%-97% SoH (LeafSpy) depending on recent driving / charging patterns and ambient temperature. It was reliably 100% until the first week of Auguest......but it's almost 2 years old (from manufacure) so a small amount of degradation is to be expected.

I should be over 50,000km in the next 3-4 months. I'm doing about 1000km / week unless I'm in Australia (two weeks coming up).

This leaf just needs to last me until I can order a Tesla Model 3.

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Linuxluver

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#1882068 11-Oct-2017 19:55

MarkH67:

k14:

Going by some of the tradme auctions there seems little need to be concerned about battery degredation. Here is a 2013 model that has done 57000kms and it still has 12 battery bars left. It sounds a bit too good to be true? Anyone seen a Leaf with over 50000km and still 12 battery bars left?

I'm doubtful that a 4 year old Leaf battery wouldn't be degraded much. Is it possible for one to still be on 12 bars? Maybe, but I wouldn't buy one without expecting that the 12th bar could disappear any day. The first bar doesn't disappear until the battery has lost 15% and then subsequent bars are lost for every 6.25% dropped - a twelve bar Leaf could easily have a battery at 86%, I definitely would assume at 4 years old it is probably under 90% SoH.

The 12th bar is about 15% wide.....so anything over 84%. After that the bars are about 6.5%-7% (85/11 bars) each.

Edit: Other bars are 6.25% each.....but that doesn't add up to 11 * 6.25 = 68.75......so there must be another "fat" bar somewhere....

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PhantomNVD

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#1882124 11-Oct-2017 22:03

I’d say the ‘fat’ bar is the last one, and very fat as my leaf has me puzzling recently when plugging into a DC QC and being told by the dash I have 10kms left (flashing and ‘battery low’ warning) and the after plugging in the charger tells me the car reports it’s on 25% SoC??? 🤔

Something really screwy going on, but as I’m too chicken to run it flat (and risk having to be towed as you can’t just rev it in the garage flatten it like an ICE, and leaving the lights etc. on would only flatten the 12v) there is no easy way to see what’s going on?

BUT since I reliably get 110-120kms from a 100% charge (GoM says 145-147kms 🙄) I’m just ignoring the readings and driving to the known limits 🤷‍♂️

Cloud999

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Wannabe Geek

#1882155 11-Oct-2017 22:26

I've been trying to set the clock to NZ time on the Nav unit in my 2016 24X Jap imported Leaf and tried to follow the instructions in the back of a manual supplied by the dealer. The manual says to disconnect the gps cable from the back of the unit in order to prevent the gps from resetting the clock to Japanese time. But when I pulled the unit out I found the instructions don't match any of the cables in the back. See photo (taken from the top of the unit). I've searched online (like https://www.youtube.com/watch?v=exj9g-kWPvI and here http://www.evsrilanka.com/viewtopic.php?t=10 but they all indicate the same cable as the one in the manual. So far I've also drawn a blank with Nissan NZ and with Clarion who make the unit which is a QY-8205 model. Can anyone identify which cable is the gps cable on my unit? Cheers

afe66

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#1882157 11-Oct-2017 22:31

Ask on nzev group on facebook. Someone posted a similar question recenty.

Cloud999

3 posts

Wannabe Geek

#1882158 11-Oct-2017 22:33

Awesome thanks

Cloud999

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Wannabe Geek

#1882196 12-Oct-2017 07:01

Just following on from this in case anyone else reads this thread, the message from the NZ EV Owners fb page is that on this particular leaf/nav unit combination if you correct the clock by removing the gps cable (which they say is the blue plug in the photo) you lose the charge timer function. Damn shame but the clock has to go!

Thanks for the steer afe66

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PhantomNVD

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#1882352 12-Oct-2017 10:48

So, to the more experienced Leaf drivers... speed =distance/time, so I’m wondering... in a Leaf, could economy driving (80-90) save enough power to defray charge time (QC stops without queuing) over longer distances?

On my way back from Whangerei today hoping to only make 2 stops instead of the 4 (nervous WAF) we made on the way up... will careful driving (1-2dots except on the steeper hills) at a slightly reduced speed (following a truck for eg.) perhaps beat several quick ‘top off’ charges?

k14

629 posts

Ultimate Geek

#1882354 12-Oct-2017 10:51

Cloud999: Just following on from this in case anyone else reads this thread, the message from the NZ EV Owners fb page is that on this particular leaf/nav unit combination if you correct the clock by removing the gps cable (which they say is the blue plug in the photo) you lose the charge timer function. Damn shame but the clock has to go!

Thanks for the steer afe66

Yes, I think you read the instructions from the 2014 and earlier models. In the newer models I don't think you can unplug the GPS antenna and retain full functionality. Really annoying I'd say. Who knows what other restrictions will arise from the latest model.

MarkH67

517 posts

Ultimate Geek

#1882459 12-Oct-2017 14:32

PhantomNVD: So, to the more experienced Leaf drivers... speed =distance/time, so I’m wondering... in a Leaf, could economy driving (80-90) save enough power to defray charge time (QC stops without queuing) over longer distances?

Driving slower will definitely increase the range you get. You will be able to drive further at 40kph than at 60kph or at 60kph rather than 80kph. If you drive 80-90kph you will get quite a bit more range than at 100kph.

On my commute from home to work to home again (70km) I can arrive home with 20% battery left or with 40% battery left, depending on how I drive. That is without exceeding 100kph as measured by GPS (110kph as measured by my car's speedo).

happyfunball

287 posts

Ultimate Geek

#1882647 12-Oct-2017 20:48

I have a potential problem with my new Leaf (2016 - 30kw) which I'm trying to figure out. I would appreciate any thoughts you veterans have.

I've had the car a few days and did a leafspy. The dealer said it was 94% SOH when he checked it, and showed me a report, but my check now is showing 87% SOH which is alarming. Should I be worried? I've charged it once via a 8A socket after driving it home from the dealer.

The dealer has offered to give me my money back so I'm not worried about being screwed over, I just need to know if this is normal.

numberonekiwi

144 posts

Master Geek

#1882680 12-Oct-2017 22:24

From what I understand about lithuim batterys they do need to be charged to 100 % on occasions and then used very soon after I see your leaf report shows 79.5% charged have you set it to charge to only 80 % also the amount of charges seem a little high for that milage try a 100 % charge during the day then go for a drive very soon after to about 1/2 charge try this a few times and see what happens.

happyfunball

287 posts

Ultimate Geek

#1883245 14-Oct-2017 08:45

I fast charged it on the dealers advice and took it for a drive. At home checked again, the SOH dropped to 86%, not sure what to think. The dealer is offering EV insurance which will cover sudden battery deterioration, does anyone have experience with that kind of insurance?

I like the car and have already had a tow bar installed so reluctant to give it up unless I know whats going on, but don't want a dud battery.

Linuxluver

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#1883868 15-Oct-2017 17:57

Cloud999: Just following on from this in case anyone else reads this thread, the message from the NZ EV Owners fb page is that on this particular leaf/nav unit combination if you correct the clock by removing the gps cable (which they say is the blue plug in the photo) you lose the charge timer function. Damn shame but the clock has to go!

Thanks for the steer afe66

Funny...I used to work as part of a team based in Sydney, Singapore, Hong Kong and Tokyo......so shifting time zones is no problem at all.....and I'd rather have the charging timer.

I'm not arguing.....just reflecting on the sorts of things we decide we can or can't tolerate. :-)

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Linuxluver

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#1883873 15-Oct-2017 18:06

PhantomNVD: So, to the more experienced Leaf drivers... speed =distance/time, so I’m wondering... in a Leaf, could economy driving (80-90) save enough power to defray charge time (QC stops without queuing) over longer distances?

On my way back from Whangerei today hoping to only make 2 stops instead of the 4 (nervous WAF) we made on the way up... will careful driving (1-2dots except on the steeper hills) at a slightly reduced speed (following a truck for eg.) perhaps beat several quick ‘top off’ charges?

I've tried to work this out, too. Underlying these calculations is the knowledge that spending any time charging over 80% is essentially wasting time as the charger slows down after 80% on 24kWh LEAFs and after 85% on 30kWh Leafs. Adding to the confusion is the 30kWh Leaf charging about 25% faster than the 24kWh earlier models.

My own "recipe" is to try to fast charge from 30% to 80% - or less (like 40% to 80%) - in order to minimise charging time AND minimise the amount of additional battery heat I get from ech fast charge. Driving slower will also have that effect as you can save - say - 20% of your energy at 80kph vs 100kph....

Charging from 15% to 95% - and I have done it - does two things:

1. In a 30kWh Leaf it will take 30 minutes. In a 24kWh LEAF it will take about 45-50 minutes. Those minutes after 80% add up.
2. It will push your battery temp up about 15C each time you do it....so if you start at 20C.....after two long fast charges you're looking at 45C-50C....and maybe having to wait a while before you try another 15-95% charge.

The other advantage of driving slower (80kph - 90kph) is your Leaf battery both heats up more slowly....and sheds heat more quickly between charges. Driving at 100kph you may find you don't shed heat at all and your battery just gets warmer and warmer until it won't charge anymore.

Using the more frequent, smaller charging regime I was able to get from Auckland to Wellington in 12 hours with 6 (shorter - maybe only 8 mins in some cases) fast charges.....and still be under 50C for battery temp.

So....all things considered.....charge from 30% to 80% (or as near as) if you can.....and then drive more slowly. Hard to do the latter on SH1......but there are often back roads that have a lot less traffic....or times of day when most people are asleep.

It all sounds like pain.....but I can drive 700km for about $28, at a relaxed pace..........and enjoy it.

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