Leaf battery degradation case A: AZE0 24 kW⋅h—part 3 2021-10
Posted on 24 December 2021 in Electric vehicles
Part 3 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:
- Part 1 2019-10.
- Part 2 2020-10.
- Part 3 2021-10 (this article).
- Part 4 2022-11.
Summary
Period | Distance | ∆SoH |
---|---|---|
12 months | 9 379 km | −3.64 pp |
- In the year ending October 2021 the vehicle travelled 9 379 km and the SoH reduced by 3.64 percentage points.
Data
Battery parameters were recorded using Leaf Spy Pro for Android. The table below shows the battery parameters for the year ending October 2021.
Date | Odometer (km) | A⋅h | SoH (%) | Hx (%) | Fast charges | Type 1,2 charges |
---|---|---|---|---|---|---|
2020-10-25 | 39481 | 53.48 | 81.77 | 75.38 | 27 | 1396 |
2020-11-17 | 40000 | 53.10 | 81.20 | 74.72 | 27 | 1417 |
2020-12-24 | 41386 | 56.42 | 86.27 | 80.88 | 37 | 1434 |
2021-01-04 | 42111 | 55.84 | 85.38 | 79.76 | 46 | 1440 |
2021-02-08 | 42834 | 52.80 | 80.73 | 74.16 | 46 | 1469 |
2021-04-03 | 44197 | 52.64 | 80.51 | 73.90 | 46 | 1524 |
2021-05-06 | 45048 | 52.05 | 79.85 | 72.79 | 46 | 1572 |
2021-06-05 | 45760 | 51.90 | 79.36 | 72.54 | 47 | 1618 |
2021-07-02 | 46232 | 51.72 | 79.08 | 72.20 | 47 | 1644 |
2021-08-01 | 46912 | 51.72 | 79.09 | 72.22 | 47 | 1682 |
2021-09-02 | 47279 | 51.93 | 79.41 | 72.59 | 48 | 1698 |
2021-10-01 | 48032 | 51.72 | 79.08 | 72.21 | 49 | 1732 |
2021-11-01 | 48860 | 51.10 | 78.13 | 71.08 | 50 | 1772 |
Observations
The count of Type 1 and 2 charges is higher than actual due to the Leaf's built-in charge timer recording one charge when the vehicle is plugged in, and a second when the timer initiates charging.
The increase in SoH from 81.20% to 86.27% in December 2020 is due to a series of quick charges made on an inter-city journey.
In the year ending October 2021 the vehicle travelled 9 379 km and the SoH reduced by 3.64 percentage points.
On 2021-09-26 it was observed that the eleventh battery capacity level bar had been lost.
From 2021-03-13 the vehicle was parked uncovered.