DNAinaGoodWay
Well-known member
azguy, can you read cell balance?
2015: Battery Data Report @ 100% Charge
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Here are my most recent stats with 6410 on the odometer at 100% charge and 113 on the GOM
278 Gids, 21.55 kwh, 97.09 SOC, 89.2% SOH, 91.05 HX 59.10 Ahr 63.6 Temp
Anecdotally, I tried keeping the charge between 30-80% for 3 weeks of driving before taking this reading and these numbers are actually up in HX and Ahr compared to prior readings.
I have no reason to think that my range has diminished in any measurable way. I've maintained 4.7mi/kwh since I had the car and roll into work with almost exactly the same percentage every morning. I've seen a lot of commentary on this post about people with less than stellar range capacity loss and while not the extreme, I consider myself to be at the bottom end of that spectrum. My worst 100% GID reading has been 275. My car was manufactured in 4/14 and thus I suspect was one of the first 2015's off the line. I bought it in 8/14 so I suspect that it sat on the lot for 4-5 months in the summer and I attribute this (and my wife charging it to 100% and letting it sit at work for 5-6 hours each day during September/October) to any early loss compared to other users. I think our early manufactured units just have an extra summer of exposure and those of us who were new to EVs didn't know better than to ask for the freshest car on the lot, or bring an OBD reader with us to test capacity before buying. You live and you learn.
At this point I've resolved to stop fussing with it and follow three primary rules when charging. (1) Don't leave it at 100% for over 2 hours, especially in the summer, and (2) don't top up the battery unless below 70% and (3) Avoid frequent QC - Although I have yet to even use a QC on the car.
Here's to hoping that we still have greater than 10 bars when we go to sell it or trade it in about 2.5 years from now.
278 Gids, 21.55 kwh, 97.09 SOC, 89.2% SOH, 91.05 HX 59.10 Ahr 63.6 Temp
Anecdotally, I tried keeping the charge between 30-80% for 3 weeks of driving before taking this reading and these numbers are actually up in HX and Ahr compared to prior readings.
I have no reason to think that my range has diminished in any measurable way. I've maintained 4.7mi/kwh since I had the car and roll into work with almost exactly the same percentage every morning. I've seen a lot of commentary on this post about people with less than stellar range capacity loss and while not the extreme, I consider myself to be at the bottom end of that spectrum. My worst 100% GID reading has been 275. My car was manufactured in 4/14 and thus I suspect was one of the first 2015's off the line. I bought it in 8/14 so I suspect that it sat on the lot for 4-5 months in the summer and I attribute this (and my wife charging it to 100% and letting it sit at work for 5-6 hours each day during September/October) to any early loss compared to other users. I think our early manufactured units just have an extra summer of exposure and those of us who were new to EVs didn't know better than to ask for the freshest car on the lot, or bring an OBD reader with us to test capacity before buying. You live and you learn.
At this point I've resolved to stop fussing with it and follow three primary rules when charging. (1) Don't leave it at 100% for over 2 hours, especially in the summer, and (2) don't top up the battery unless below 70% and (3) Avoid frequent QC - Although I have yet to even use a QC on the car.
Here's to hoping that we still have greater than 10 bars when we go to sell it or trade it in about 2.5 years from now.
BooKittyLeaf
Well-known member
tkdbrusco said:
Thats about where I am at now with my 2015 SV.
Built Aug 22, sat on a lot until Jan 22 when I leased it.
Im actually hoping I can run it down to 8 Bars & get a new battery before Lease is up. I specifically got a 4 year lease because I think in 3-4 years Nissan will have an even better thermally resistant battery (No TMS) but via chemical composition, perhaps even a denser pack with more Kw for longer range - then I will buy it at the residual. If they havent improved much by then, I bet there will others that will have superseded Nissan, and then thats where I will go. Only the Shadow knows
At 600 miles my readings are similar to yours, but you have about 5% higher readings across the board
Have you "verified" you have the Lizard Battery.... calling Nissan Leaf Support with your VIN? April should be some of the first Hot Climate Batteries in production.
I agree totally about "Newbee" EV Buyers like US - Lesson Learned - ALWAYS check the Mfg Date before (simple call to Nissan) and bring LeafStat or Spy ... wish I knew that as well!
Nest one i lease/Buy I will try & have the Dealer order one from Nissan so I get as "fresh" of a pack as possible.
BooKittyLeaf said:tkdbrusco said:
Thats about where I am at now with my 2015 SV.
Built Aug 22, sat on a lot until Jan 22 when I leased it.
Im actually hoping I can run it down to 8 Bars & get a new battery before Lease is up. I specifically got a 4 year lease because I think in 3-4 years Nissan will have an even better thermally resistant battery (No TMS) but via chemical composition, perhaps even a denser pack with more Kw for longer range - then I will buy it at the residual. If they havent improved much by then, I bet there will others that will have superseded Nissan, and then thats where I will go. Only the Shadow knows
At 600 miles my readings are similar to yours, but you have about 5% higher readings across the board
Have you "verified" you have the Lizard Battery.... calling Nissan Leaf Support with your VIN? April should be some of the first Hot Climate Batteries in production.
I agree totally about "Newbee" EV Buyers like US - Lesson Learned - ALWAYS check the Mfg Date before (simple call to Nissan) and bring LeafStat or Spy ... wish I knew that as well!
Nest one i lease/Buy I will try & have the Dealer order one from Nissan so I get as "fresh" of a pack as possible.
I bought, didn't lease, so I'm a bit concerned as well. The plan for mine was alway to sell it in 3 years, either trade in on another EV or sell private party. I need to get $13.5K for it to break even on the car (not including depreciation saving on the other car due to more minimal use).
I haven't called to confirm that I have a lizard pack, but it is my understanding that all 2015s are lizard packs. There's been a few press releases that have said that, so I seriously doubt that I don't. Also no prior pack has ever read 292 Gids at 100% charge and mine read that until about 1500 miles or so. Given that, I don't think there is any way that I don't have a Lizard pack in my car. Is is interesting that I've seen a few people with 2014MY years that have 4/14 production dates as well? I'm not holding out hope for a warranty replacement on my battery pack. Not only do I doubt that mine will drop that low by 60K miles, I also don't think I would keep the car that long anyways. If I can get >$12K for it in 3 years as a private party sale or a trade in, then it is getting turned in for a Leaf Gen2, Bolt, or a Tesla model 3. I suppose that I could keep it around and hope for a battery replacement under warranty, but it likely wouldn't be worth it for the following reasons (1) In 5 years the $7500 tax credit will start rolling off, so while I'm waiting around, I'll be losing money I could have gotten with the purchase of a new EV. (2) The warranty replacement batteries will by that point be refurbished old leaf batteries. The fine print in the warranty only says that they need to replace it with a battery with >9bars, not necessarily a new one. Just my luck, I'd go through a bunch of hassle to get a pack with marginally better capacity. (3) There are no guarantees that Nissan will either drop the price for the new replacement batteries or product new once with improved tech or extended range.
I really think that the loss we are experiencing is just due to sitting on lots in the sun (perhaps at 100% charge) for extended periods of time. Really a shame cause had I known better, I would have went around opening doors of 2015S w/QC and just found the one with a 7/14 or 8/14 production date and I'd likely be better off. The good news is that from about mile 2000-6500 my readings have been between 285-275 pretty consistently, with most around 282 or so, so I'm hopeful that there's some leveling off that's occurring. I think the true test will be what the battery looks like at the end of the next summer. We put about 14K a year on the leaf so come next September if I'm losing a first bar, I'm going to be very worried! I've done some predictive analysis and it seems like the first bar should drop around the time a 100% charge gets you consistently to not greater than 250 GIDS with the 2nd bar dropping at just shy of 230 GIDS. If I lose the 2nd bar before 40K miles, I'm gonna be watching it like a hawk and getting reading to trade that puppy in ASAP.
MartinChico
Well-known member
A few weeks ago, after an overnight L-1 charge, I noticed that (almost) all of the cell voltages in the LEAF Spy Pro app were red:
The only thing I have been able to learn is "The red bars represent those cell pairs that have the shunt active to bleed off some of the stored energy and balance the battery pack. This is still a work in progress." So it doesn't really sound like a problem, but all those red bars are sure unnerving. Should I be worried?
Thanks for tolerating my ignorance.
The only thing I have been able to learn is "The red bars represent those cell pairs that have the shunt active to bleed off some of the stored energy and balance the battery pack. This is still a work in progress." So it doesn't really sound like a problem, but all those red bars are sure unnerving. Should I be worried?
Thanks for tolerating my ignorance.
Roadburner440
Well-known member
tkdbrusco said:
I have a 2012 so I can't comment on the lizard pack. My battery is sitting at 11 bars at the moment at 35.5 months, and will probably lose a second bar this summer (maybe third). So I would expect you to still have 12 bars at 2.5 years as I just lost my bar in November. Obviously it depends on where you live. I am curious to see how your guys batteries fare so I can see if the replacement would even be worthwhile outside of warranty. Hopefully the lizard battery works out, and if not I will pray for a third party solution I suppose. :lol:
DNAinaGoodWay
Well-known member
azguy said:
Sorry, I only have an iPhone, so stuck with LeafStat until LeafSpy for iOS comes out. The LeafSpy threads should have some info on that. I'm curious to see if the numbers you report are the same if your pack is balanced. With LeafStat, I can't read cell pair voltages at all.
RegGuheert
Well-known member
No, that is nothing to worry about.MartinChico said:
The cells in the pack are never perfectly balanced, but as the pack gets very close to full the charger slows to try to bring all cells to exactly the same level. The MY2013s and later seem to do an excellent job of this.
Anyway, it is best to look at cell balance at low SOCs (like LBW). When the pack is fully charged, it is impossible to determine if you have a problem with any of the cells.
DaveinOlyWA
Well-known member
azguy said:
I ran a VERY short experiment where I fully charged the LEAF overnight, checked it the next morning and then let it sit til the next day and both times I did it, I lost over 1% and its now looking like I might not get that back...
I have increased my driving back to what it was last Fall and that got back a little but not nearly what I lost. The only thing I have left to try is multiple QC's... other than that, I am afraid my full capacity is now a fond memory...
DaveinOlyWA said:
I'm about to hit 7,000mi on my 2015 and the best 100% I've had in the last few 100% charges is 278. I don't think I'm getting back the old high 280 charges anytime soon. In fact at this rate of degredation, I'm losing my 3rd bar by 45,000 miles.
MartinChico
Well-known member
12/28/14 / 93mi / 9 L1/L2s & 1 QC:
96.4% SOC / 289 GIDs / 22.4 kWh / 63.28 AHr / 100% SOH / 97.45% Hx
01/31/15 / 652mi / 24 L1/L2s & 1 QC / ~3.9 mi/kWh (for the past month):
97.2% SOC / 281 GIDs / 21.8 kWh / 59.76 AHr / 96% SOH / 92.14% Hx
02/28/15 / 1,477mi / 54 L1/L2s & 1 QC / 4.4 mi/kWh (for the past month):
97.3% SOC / 281 GIDs / 21.0 kWh / 59.72 AHr / 96% SOH / 92.08% Hx
I was really disappointed when my GIDs dropped to 281 after the first month, but it's leveled off, so maybe it's not as bad I first thought.
96.4% SOC / 289 GIDs / 22.4 kWh / 63.28 AHr / 100% SOH / 97.45% Hx
01/31/15 / 652mi / 24 L1/L2s & 1 QC / ~3.9 mi/kWh (for the past month):
97.2% SOC / 281 GIDs / 21.8 kWh / 59.76 AHr / 96% SOH / 92.14% Hx
02/28/15 / 1,477mi / 54 L1/L2s & 1 QC / 4.4 mi/kWh (for the past month):
97.3% SOC / 281 GIDs / 21.0 kWh / 59.72 AHr / 96% SOH / 92.08% Hx
I was really disappointed when my GIDs dropped to 281 after the first month, but it's leveled off, so maybe it's not as bad I first thought.
TheGiz05
Member
Checking in for March. Not sure if it's because the temperatures around here are trending warmer but my battery jumped back up to what I think are almost "like-new" numbers (from 272 Gids/93% SOH at the end of January). It will be interesting to see what April's reading is.
Date: 3/2/2015
Mileage: 3223
6 QC & 152 L1/L2s
GIDs: 291
kWh: 24.55 (calculated)
SOC: 97.10%
SOH: 99%
Hx: 95.92%
Ahr: 62.05
Avg Battery Temp: 64.27 F
Date: 3/2/2015
Mileage: 3223
6 QC & 152 L1/L2s
GIDs: 291
kWh: 24.55 (calculated)
SOC: 97.10%
SOH: 99%
Hx: 95.92%
Ahr: 62.05
Avg Battery Temp: 64.27 F
jwalbaum
Member
Date: 3/3/2015
Mileage: 7675
0 QC & 428 L1/L2s
GIDs: 292
kWh: 22.6
SOC: 97%
SOH: 100%
Hx: 105.26%
Ahr: 64.38
Avg Battery Temp: 29.3F
Manufacture date: ? Lease date: 9/13/2014
Only thing that has changed since purchasing Leaf Spy (11/6/14) is Hx went from 104% to 105% and Ahr went from 64.48 to 64.38. Always charge to 100% if time allows, mix of 1.2kW and 6.6kW. Driven in Iowa (cold), usually 2-4 temp bars.
Mileage: 7675
0 QC & 428 L1/L2s
GIDs: 292
kWh: 22.6
SOC: 97%
SOH: 100%
Hx: 105.26%
Ahr: 64.38
Avg Battery Temp: 29.3F
Manufacture date: ? Lease date: 9/13/2014
Only thing that has changed since purchasing Leaf Spy (11/6/14) is Hx went from 104% to 105% and Ahr went from 64.48 to 64.38. Always charge to 100% if time allows, mix of 1.2kW and 6.6kW. Driven in Iowa (cold), usually 2-4 temp bars.
DaveinOlyWA
Well-known member
MartinChico said:
I would be more concerned with the ahr remaining. what is your GIDs set at? your ahr remaining is at my level (I average between 20.8 and 21.2) and I have over 19,000 miles