knightmb
Posts: 942
Joined: Mon Jan 12, 2015 7:41 pm
Delivery Date: 26 Feb 2021
Leaf Number: 306291
Location: Franklin, TN

Hidden Reserve - What is hiding in your 24, 30, 40, 62 kWh Battery?

Mon Apr 26, 2021 8:03 am

I see this come up in topics, but it would be nice to have one place for us to post what we see as capacity below 0% or ---% for the Generation 1 Leaf.

For example, in my 2020 SL Plus, going by LeafSpy, Turtle mode kicks in at 1.0 kWh of remaining battery and full shutdown at 0.7 kWh remaining. I'll have to figure out the math for GIDs on that later and update this topic. Before It hits turtle mode though, at 0% Dash reading, there is still 8 kWh of capacity left when watching it in LeafSpy and it is usable range. I've driven down the extra 20-30 miles just to see myself.

In my 2013 SV, turtle mode hit at 0.5 kWh and shutdown was 0.3 kWh (again, will have to figure out the GIDs math and update this). When the dash ---%, I recall I still had about 1.0 kWH of remaining power, so a very small buffer for range, but one could still squeeze maybe 4 or 5 more miles out of it when driving slow.

I don't know much about the 30 or 40 kWh packs and how much is left on the battery past 0%, but I would certainly like to hear what others have experienced. :mrgreen:
2020 Leaf SL Plus - (Manufacture Date March 2020)
2013 Leaf SV (8 faithful years of service before trade in at 75,679 miles)

DougWantsALeaf
Posts: 2694
Joined: Fri May 10, 2013 8:21 pm
Delivery Date: 18 May 2013
Leaf Number: 407811
Location: Chicago North Side

Re: Hidden Reserve - What is hiding in your 24, 30, 40, 62 kWh Battery?

Mon Apr 26, 2021 9:16 am

Yes, the buffer on the 62kWh pack is quite generous. It should help pack life over time though.
2019 S Plus (93.86% SOH) & 2019 SV Plus (93.35% SOH) Both Silver
2013 Leaf SV sold 2019 with 11 bars
100 Mile Club Member (Number 87)
Max Miles on 13 Leaf: 120 miles
Max Miles on 19 SV+: 242 Highway miles @ 4.5 miles/kWh

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Stanton
Posts: 2349
Joined: Thu Feb 03, 2011 10:56 am
Delivery Date: 01 Sep 2011
Leaf Number: 7458
Location: Plano, TX
Contact: Website Twitter

Re: Hidden Reserve - What is hiding in your 24, 30, 40, 62 kWh Battery?

Mon Apr 26, 2021 11:30 am

How about this: I put a 40 kWh pack in my car so I don't even have to think about what the reserve is (because I have no plans to go near it)! :P
2011 Blue Ocean SV
12v LiFePO4 battery w/Antigravity Battery Tracker
FIAMM 74100 horns/Wet Okole seat covers/Tor's low-power heater mod/Dala's CAN-bridge
Lizard Pack (Rev E) installed @51 months/41k miles
40 kWh Pack (Gen2) installed @115 months/85k miles

knightmb
Posts: 942
Joined: Mon Jan 12, 2015 7:41 pm
Delivery Date: 26 Feb 2021
Leaf Number: 306291
Location: Franklin, TN

Re: Hidden Reserve - What is hiding in your 24, 30, 40, 62 kWh Battery?

Mon Apr 26, 2021 11:41 am

I share the sentiment, it is nice to know for emergency reasons. If you are coming in to a QC and the site is offline for some reason, you have to get to another one far away and the GOM isn't giving you much confidence that you will make it....unless you know the GOM is kind of lying near the bottom end of the battery range. 8-)
2020 Leaf SL Plus - (Manufacture Date March 2020)
2013 Leaf SV (8 faithful years of service before trade in at 75,679 miles)

SageBrush
Forum Supporter
Posts: 6265
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: Hidden Reserve - What is hiding in your 24, 30, 40, 62 kWh Battery?

Mon Apr 26, 2021 1:25 pm

I presume the reserve amount will decrease as the battery degrades. I'm happier getting a 'kWh remaining' read from an app.

BTW, 8 kWh reserve sounds truly excessive. I doubt Nissan designed it that way
2013 LEAF 'S' Model with QC & rear-view camera
Bought Jan 2017 from N. California
Two years in Colorado, now in NM
03/18: 58 Ahr, 28k miles
11/18: 56.16 Ahr, 30k miles
09/20: 54.3 Ahr; 38k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

GerryAZ
Gold Member
Posts: 2955
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Hidden Reserve - What is hiding in your 24, 30, 40, 62 kWh Battery?

Mon Apr 26, 2021 11:13 pm

My 2011 and 2015 were both similar and very consistent: LBW (low battery warning--when GOM starts flashing remaining miles) would happen at 49 "GIDS"; VLBW (very low battery warning--when GOM switches to --- remaining miles) would happen at 24 GIDS; Turtle (power limited mode) would happen at 5 GIDS; and Shutdown (main DC contactor opens) would happen at 4 GIDS when running climate control in the driveway. I would typically get about 7 miles after LBW before VLBW and another 7 miles after VLBW. There is normally not much left once the Turtle indicator comes on--maybe 0.25 to 0.5 mile if driven very slow and gentle. A few weak cells toward the end of the time I had the 2015 resulted in premature Turtle mode a few times and I was once able to drive over a mile at very low speeds to reach a charging station, but that was unusual and I was very lucky.

My 2019 SL Plus is not as consistent, but there is a lot left after the first warning: LBW usually happens at 6% SOC and around 106 to 112 GIDS; VLBW usually happens at 2% SOC and around 78 to 82 GIDS; ELBW (extremely low battery--when SOC display switches to ---%) usually happens around 58 to 64 GIDS; Turtle usually happens around 9 to 19 GIDS; and Shutdown usually happens around 6 to 9 GIDS when running climate control in the driveway. Although distances are less consistent, I have driven as much as 34 miles after LBW, 30 miles after VLBW, 16 miles after ELBW, and as much a mile after Turtle.

There is not enough degradation yet to know if the reserve levels change over time with the 62 kWh battery in the 2019, but they were consistent on the 24 kWh batteries in both the 2011 (replacement battery from Japan with original chemistry) and 2015 from the time the batteries were new until the 2011 was totaled and until I traded the 2015 at 82k miles.
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

User avatar
Stanton
Posts: 2349
Joined: Thu Feb 03, 2011 10:56 am
Delivery Date: 01 Sep 2011
Leaf Number: 7458
Location: Plano, TX
Contact: Website Twitter

Re: Hidden Reserve - What is hiding in your 24, 30, 40, 62 kWh Battery?

Tue Apr 27, 2021 5:18 am

GerryAZ wrote:
Mon Apr 26, 2021 11:13 pm
My 2011 and 2015 were both similar and very consistent: LBW (low battery warning--when GOM starts flashing remaining miles) would happen at 49 "GIDS"; VLBW (very low battery warning--when GOM switches to --- remaining miles) would happen at 24 GIDS; Turtle (power limited mode) would happen at 5 GIDS; and Shutdown (main DC contactor opens) would happen at 4 GIDS when running climate control in the driveway.
I see the same numbers with the 40 kWh battery in my 2011. I guess that means these warnings are "hard coded" into the car BMS (or whatever)?
2011 Blue Ocean SV
12v LiFePO4 battery w/Antigravity Battery Tracker
FIAMM 74100 horns/Wet Okole seat covers/Tor's low-power heater mod/Dala's CAN-bridge
Lizard Pack (Rev E) installed @51 months/41k miles
40 kWh Pack (Gen2) installed @115 months/85k miles

knightmb
Posts: 942
Joined: Mon Jan 12, 2015 7:41 pm
Delivery Date: 26 Feb 2021
Leaf Number: 306291
Location: Franklin, TN

Re: Hidden Reserve - What is hiding in your 24, 30, 40, 62 kWh Battery?

Thu Apr 29, 2021 3:26 pm

I finally got some hard numbers for mine so I'm not just guessing from memory. I will be able to check if these change over time (as the battery loses capacity) or if Nissan has kind of soft-coded in these levels to be hidden regardless to make sure the battery range doesn't change over time by eating up some of the hidden range left at the bottom. Using small images to save people bandwidth/viewing headaches. :mrgreen:

2% Battery - 79 GIDS - 6.1 kWh
Image
Image

1% Battery - 74 GIDS - 5.7 kWh
Image
Image

0% Battery - 65 GIDS - 5.0 kWh
Image
Image
2020 Leaf SL Plus - (Manufacture Date March 2020)
2013 Leaf SV (8 faithful years of service before trade in at 75,679 miles)

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