knightmb
Well-known member
Wonder no more, I had a good opportunity to test this week.
I had a multiple-state trip for the family to visit relatives and it was a 640 mile round with nothing but QC the entire way.
I got the battery temperature all the way over 130F (54C) threshold due to constant QC and driving in 100F air temperature. The first thing you will notice once you start hitting the "red" zone (starts at 127F in LeafSpy I think?) on the temperature gauge is that your top end "acceleration" power starts to get reduced. The picture below was taken at 131F, so as the temperature goes past this, you start losing a bubble for every degree over 130F. So at 135F for example, the Leaf would be reduced to just 4 acceleration bubbles (still plenty of power to reach highway speed though) As the battery cools down, the acceleration bubbles slowly return. With it being over 100F outside though, it would take a long time before all power would return for acceleration and usually not before the next QC station, I still would be down 1 of 2 acceleration bubbles.
To top all that off, I will have to make the same trip in another week and it will probably be even hotter. Guess this battery is going to have literal days of roasting in human killing temperatures underneath.
And yes, my car has returned to 12 bars now :lol:
The maximum temperature I ever got was 137F for the last QC at the last leg of the trip. I was still able to reach 60 MPH with so few bubbles left (AC running the whole way also) and even though I knew my battery was baking, never had a single issue or error on the dash during the whole trip.
On the return trip, basically repeated the same process though I arrived at home at only 130F this time because the outside air temperature was in the low 90s instead of 100s I believe.
What damage did it do to the battery? Well, who knows, but it did increase my capacity and bump my battery SOH up 2%, so I guess count that as negative damage so far.... :twisted:
Before battery baking road trip:
After battery baking road trip
I had a multiple-state trip for the family to visit relatives and it was a 640 mile round with nothing but QC the entire way.
I got the battery temperature all the way over 130F (54C) threshold due to constant QC and driving in 100F air temperature. The first thing you will notice once you start hitting the "red" zone (starts at 127F in LeafSpy I think?) on the temperature gauge is that your top end "acceleration" power starts to get reduced. The picture below was taken at 131F, so as the temperature goes past this, you start losing a bubble for every degree over 130F. So at 135F for example, the Leaf would be reduced to just 4 acceleration bubbles (still plenty of power to reach highway speed though) As the battery cools down, the acceleration bubbles slowly return. With it being over 100F outside though, it would take a long time before all power would return for acceleration and usually not before the next QC station, I still would be down 1 of 2 acceleration bubbles.
To top all that off, I will have to make the same trip in another week and it will probably be even hotter. Guess this battery is going to have literal days of roasting in human killing temperatures underneath.
And yes, my car has returned to 12 bars now :lol:
The maximum temperature I ever got was 137F for the last QC at the last leg of the trip. I was still able to reach 60 MPH with so few bubbles left (AC running the whole way also) and even though I knew my battery was baking, never had a single issue or error on the dash during the whole trip.
On the return trip, basically repeated the same process though I arrived at home at only 130F this time because the outside air temperature was in the low 90s instead of 100s I believe.
What damage did it do to the battery? Well, who knows, but it did increase my capacity and bump my battery SOH up 2%, so I guess count that as negative damage so far.... :twisted:
Before battery baking road trip:
After battery baking road trip