SageBrush
Posts: 1217
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: Colorado

Battery Temperature Correlated to Ambient

Sat Aug 05, 2017 7:23 pm

It has been reported by Nissan that battery longevity is most affected by battery temperature, and battery temperature by climate. I monitor my LEAF battery monthly for capacity and temperature using LeafSpy, and share below the temperature data for the past 5 months. We park the car in the shade at home, try to avoid parking on hot asphalt in the summer when out and about, charge during the cool hours, and do not fast charge. Car is used most days for about 15-20 miles.

Ambient average is calculated from historical data using the simple average of (max+min)/2

Image

So at least for our use profile Nissan is correct to within a few degrees.
2013 Model 'S' with QC & rear-view camera
Bought off-lease Jan 2017 from N. California with 63.9 Ahr after 22k miles
Car is now enjoying an easy life in Colorado

GerryAZ
Gold Member
Posts: 1402
Joined: Mon Nov 22, 2010 6:47 pm
Delivery Date: 12 Jun 2011
Location: Phoenix, AZ

Re: Battery Temperature Correlated to Ambient

Sun Aug 06, 2017 2:12 pm

I have been driving Leafs as daily drivers in Phoenix since June 2011 (except for about one month) and I agree that battery temperature tracks average ambient temperature closely. A DCQC will spike the battery temperature a bit, but the battery pack cools off to somewhere near ambient temperature while parked overnight. I also notice the battery pack temperature drops during highway driving after DCQC due to air flow over the battery housing.
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

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