Leaf battery degradation case A: AZE0 24 kW⋅h—part 1 2019-10

Posted on 11 January 2021 in Electric vehicles

Part 1 in a series following the state of health (SoH) degradation of a Nissan Leaf AZE0 24 kW⋅h battery.

Vehicle specification:

Vehicle:Nissan Leaf
Type:ZAA-AZE0
MY:2013

Articles in the series Nissan Leaf battery degradation case A: AZE0 24 kW⋅h:

  1. Part 1 2019-10 (this article).
  2. Part 2 2020-10.

Summary

2013-12/2019-10
Period Distance ∆SoH
70 months 31 060 km −15.47 pp
  • From December 2013 (date of manufacture) to October 2019 the SoH reduced on average 2.65 percentage points per year to 84.53%.

Data

Records started in October 2019 when the vehicle was estimated to be 70 months old (approximately six years).

The readings dated 2013-12-01 are theoretical readings of a new battery. The readings dated 2019-10-07 were made with Leaf Spy for Android.

Battery degradation 2013-12/2019-10.
Date Odometer (km) A⋅h SoH (%) Hx (%) Fast charges Type 1,2 charges
2013-12-01 0   100.00 100.00 0 0
2019-10-07 31060 55.31 84.53 77.15 12 1160

Battery degradation 2013-12/2019-10 CSV file.

Observations

  1. The month of manufacture is unknown so for the purpose of this articles a manufacture date of December 2013 has been used.
  2. SoH declined from 100% to 84.53% from 2013 (year of manufacture) to October 2019, a reduction of 15.47 percentage points. On average this is a reduction of 2.65 percentage points per year.