TylerNV
Posts: 9
Joined: Sat Jun 25, 2022 1:36 pm
Delivery Date: 05 Jun 2022
Leaf Number: 302868

Not sure if this is normal?

Hello everyone! I'm new to the forum. I'm a recent 2015 Leaf SV owner. 50,000 miles/ 9bars. Yesterday, I arrived home with 7% left on my battery. I put it on L1 charging overnight, along with a Kill-A-Watt unit to observe my findings. This morning the car reported 100% full, but the kill-a-watt showed only 14.4kWh was put in. I'm certain I have the 28kWh battery, but could I be wrong? Could this batter really have half capacity left? Am I missing something?
thanks.
Tyler
LeftieBiker
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Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Not sure if this is normal?

Welcome. The batteries used from 2011 until mid 2016 are all 24kwh, not 28kwh. Of this, several KWH are reserved. So with 3 capacity bars gone (the first one is worth 15%, the others about 6% each), the amount of charge added seems at least ballpark correct.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.
goldbrick
Posts: 1792
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: Not sure if this is normal?

A 2015 Leaf has a nominal 24kWh battery that IIRC is actually about 22kWh usable capacity when new. Since you have 9 bars, your capacity is very roughly 70% of new so your battery actually is about 15 kWh capacity. 9 bars covers approximately 65-72% of new capacity as the first bar is 15% +/-. The charging isn't 100% efficient so take that into account also.

Finally, there is actually some 'hidden' range below 0% SOC which is hard to quantify so there may be a slight adjustment there.

Hopefully the range will be sufficient for your needs but I would trust the meter more than anything the car reports.

The bottom line, of course, is how many miles you can drive on a full charge and whether or not the car meets your needs. Almost everyone improves their efficiency after driving an EV for a while as they adapt to an EV. If you live in a climate where it gets cold, be ready for a drop in range due to the fact that any cabin heat must be generated from the battery and the fact that all batteries lose capacity and efficiency when cold.

Welcome to the world of EV's ! I think you will like it.
cwerdna
Posts: 12997
Joined: Fri Jun 03, 2011 4:31 pm
Delivery Date: 28 Jul 2013
Location: SF Bay Area, CA

Re: Not sure if this is normal?

For reference, https://usa.nissannews.com/en-US/releas ... -press-kit is the '15 Leaf press kit.

'22 Niro EV
'19 Bolt Premier (bought back by GM)
'13 Leaf SV w/premium (former)
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Please don't PM me with Leaf questions. Just post in the topic that seems most appropriate.
GerryAZ
Gold Member
Posts: 3323
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Not sure if this is normal?

You probably had at least 5 kWh of useable energy left at 7% SOC (on dash display) so the 14.4 kWh charging energy is reasonable. L1 charging is less efficient so the 14.4 kWh input probably yielded about 12 kWh into the battery. Useable capacity of 17 kWh is commensurate with 9 capacity bars.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015; traded 8/10/2019 at 82,436 miles
White LEAF 2019 SL Plus purchased 8/10/2019
LeftieBiker
Moderator
Posts: 18953
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
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Re: Not sure if this is normal?

That would be 9 "full" bars, of course. If the car is about to lose the ninth bar, then capacity would be much closer to 8 bars.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.
TylerNV
Posts: 9
Joined: Sat Jun 25, 2022 1:36 pm
Delivery Date: 05 Jun 2022
Leaf Number: 302868

Re: Not sure if this is normal?

Thank you to everyone! And yes, I knew it was 24kWh battery, not sure why I typed 28. At any rate, it sounds like nothing out of the ordinary then. I'll continue measure what I'm putting in.
On that note, I got all kinds of notifications as my battery was going down, as I was driving home, starting at 15% i think. Even the "miles left" indicator went away, and just displayed a flashing flat line. As I said, I was home by 7%, but what exactly happens when it gets critically low? I imagine the last ditch effort is your forced to pull over and park before the motor shuts down? And is it generally good practice to periodically run down your capacity to 5 or 10%? Or is this considered a big no-no? In the LiFePO4 battery world, I will deplete my off-grid DIY banks down to about 3-5% once about every 6 months or so. They live and cycle mostly in the 25%-95% SOC.

thanks again for all the great info!

Tyler
LeftieBiker
Moderator
Posts: 18953
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Not sure if this is normal?

You can run the battery down that low once in a while, but it's important to make sure that you plug it in to charge as soon as you get home. It's better to stay above 20%, or at least above 10% charge.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.
alozzy
Posts: 2536
Joined: Fri Jan 20, 2017 4:25 pm
Delivery Date: 18 Jan 2017
Location: Vancouver, BC
Contact: Website

Re: Not sure if this is normal?

The LEAF's pack chemistry is very different from LFP packs. From everything I have read, a high DoD isn't good for the LEAF's pack. Use it if you really need the range, but don't make a habit of running it down, thinking that will increase its longevity - it won't.

What you described, when the SOC gets low, is normal. After the dashes appear, there's still another 1 kWh or so remaining. When the pack SOC gets really low, a little turtle icon will appear on the dash, along with this message:

Image

Once the turtle appears, shutdown follows quickly thereafter.
Vancouver, CA owner of a 2013 Ocean Blue SV + QC, purchased 01/2017 in WA
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GerryAZ
Gold Member
Posts: 3323
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Not sure if this is normal?

On my 2015 SL the first low battery warning came at 6% SOC on the dash when remaining miles started flashing at 49 Gids on Leaf Spy. The second warning (very low battery) came at 2% SOC when the remaining miles went to "---" at 24 Gids on Leaf Spy. Motor power limited (Turtle Mode) came between 8 and 5 Gids on Leaf Spy with shutdown very soon after, usually at 4 Gids on Leaf Spy. There was typically 7 miles in suburban driving between low battery warning and very low battery warning and another 7 miles after very low battery warning before turtle mode.

FWIW, I often discharge to very low battery warning before charging fully. I believe the battery deterioration in all three of my cars was (is) no worse than others experience in the hot desert climate in which I live. I also ran full discharge/charge tests every month to track battery capacity of the 2011 and 2015 using a revenue accuracy meter ahead of the L2 EVSE. I run full discharge/charge tests every 3 months with the 2019 because longer charging times require planning to run tests on weekends. I post my discharge/charge test results every 3 months in the 62 kWh battery thread. The next test will be this weekend.
Gerry
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015; traded 8/10/2019 at 82,436 miles
White LEAF 2019 SL Plus purchased 8/10/2019

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