The 62kWh Battery Topic

[DougWantsALeaf]

Nissan expanding 62kWh Leaf battery production in the UK.

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

[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.

[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.

[DaveinOlyWA]

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.

[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).

[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.

[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.

[LeftieBiker]

There are likely sections of the pack that get colder than the temp sensors.

[DaveinOlyWA]

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.

[DaveinOlyWA]

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