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Re: The 62kWh Battery Topic

Posted: Thu Jan 21, 2021 8:44 pm
by DougWantsALeaf
Nissan expanding 62kWh Leaf battery production in the UK.

https://www.thetimes.co.uk/article/niss ... -pnx56m35q

Re: The 62kWh Battery Topic

Posted: Fri Jan 22, 2021 10:18 am
by DaveinOlyWA
Adjustment Jan 2021; -.63% More than double Oct 2020 adjustment which kinda blows up that temperature theory a bit. My 2018 did the same thing losing more in Winter while 2nd Summer the adjustments were July; +.78 and October; ZERO.

So have to say that Nissan has made progress on that heat related degradation since a few in "warmer" climates are doing significantly better than me. I guess the Pacific Northwest advantage no longer applies.

Re: The 62kWh Battery Topic

Posted: Fri Jan 22, 2021 11:40 am
by DougWantsALeaf
It does feel like these batteries don't like the cold, at least for adjustments. I wonder if you ran a space heater around the car the days of adjustment whether that might reduce the impact.

Well, I will hope for warm weather for my Feb and March adjustments.

Re: The 62kWh Battery Topic

Posted: Fri Jan 22, 2021 11:44 am
by DaveinOlyWA
DougWantsALeaf wrote:
Fri Jan 22, 2021 11:40 am
It does feel like these batteries don't like the cold, at least for adjustments. I wonder if you ran a space heater around the car the days of adjustment whether that might reduce the impact.

Well, I will hope for warm weather for my Feb and March adjustments.
March adjustment covers Jan to Mar... I would look for something else to hope for.

Re: The 62kWh Battery Topic

Posted: Sat Jan 23, 2021 12:51 pm
by DougWantsALeaf
I did a relatively long drive on a charge. 178.4 miles total drive with all but about 6 miles of it highway to/from Wisconsin. Ambient was about 15F on the way out and about 20F on way back on average (a bit colder in WI and a bit warmer in IL). Most of the driving was at 70-75mph, except for the first few miles around Chicago, and maybe 65mph at the interchange in Milwaukee. The distance and speed are not terribly exciting. Efficiency was 3.3 on the way up, and in total 3.5 m/kWh for the whole trip.

The interesting thing was that upon arriving at home with stale --- was that LS showed 5.8 kWh of power left. I had been driving for 6-8 miles on double --- before arriving home. I forgot to bring LS with me for the trip, hence only the end reading. Low battery was at 9% like it was in the summer. I never hit very low battery. This suggests in cold weather the Leaf takes you to --- earlier than when its warm. I would guess that its to also keep you from getting stuck.

As I charged just before I left, I started and ended with 5 battery bars. I was surprised that I didn't lose a bar during the 3 hours (including the stop to visit in the middle).

Re: The 62kWh Battery Topic

Posted: Sat Jan 23, 2021 1:42 pm
by LeftieBiker
It may also be that --- is based on voltage, and a cold battery will get to that low voltage with more power stored but unavailable because of the cold.

Re: The 62kWh Battery Topic

Posted: Sat Jan 23, 2021 3:49 pm
by DougWantsALeaf
True, though I was hoping at 5 temp bars, not too much would be unaccessible. Ending temp was 62F 65F and 73F, so it looks like the fast driving kept temps very healthy. Starting temp per car dash in the garage was 60F, but battery might have been a bit warmer or colder.

Re: The 62kWh Battery Topic

Posted: Sat Jan 23, 2021 4:19 pm
by LeftieBiker
There are likely sections of the pack that get colder than the temp sensors.

Re: The 62kWh Battery Topic

Posted: Sat Jan 23, 2021 5:00 pm
by DaveinOlyWA
DougWantsALeaf wrote:
Sat Jan 23, 2021 12:51 pm
I did a relatively long drive on a charge. 178.4 miles total drive with all but about 6 miles of it highway to/from Wisconsin. Ambient was about 15F on the way out and about 20F on way back on average (a bit colder in WI and a bit warmer in IL). Most of the driving was at 70-75mph, except for the first few miles around Chicago, and maybe 65mph at the interchange in Milwaukee. The distance and speed are not terribly exciting. Efficiency was 3.3 on the way up, and in total 3.5 m/kWh for the whole trip.

The interesting thing was that upon arriving at home with stale --- was that LS showed 5.8 kWh of power left. I had been driving for 6-8 miles on double --- before arriving home. I forgot to bring LS with me for the trip, hence only the end reading. Low battery was at 9% like it was in the summer. I never hit very low battery. This suggests in cold weather the Leaf takes you to --- earlier than when its warm. I would guess that its to also keep you from getting stuck.

As I charged just before I left, I started and ended with 5 battery bars. I was surprised that I didn't lose a bar during the 3 hours (including the stop to visit in the middle).
Normal. Plus packs don't heat well. I charged 6.6 kw for 3 hours 12 minutes in low 40's temp partly cloudy day. Batt temps rose 4º started at 4 TBs and ended at 4 TBs.

Re: The 62kWh Battery Topic

Posted: Sat Jan 23, 2021 5:04 pm
by DaveinOlyWA
DougWantsALeaf wrote:
Sat Jan 23, 2021 3:49 pm
True, though I was hoping at 5 temp bars, not too much would be unaccessible. Ending temp was 62F 65F and 73F, so it looks like the fast driving kept temps very healthy. Starting temp per car dash in the garage was 60F, but battery might have been a bit warmer or colder.
NOT accurate if recently charging. Sensor too close to inverter. I see up to a 2-4º temp difference immediately after a charge session nearly every morning. I have seen it as much as 8º higher on longer charge sessions