Battery ‘State of Health’ (SoH) is an important factor to consider when choosing a second-hand EV. We recommend that you get a copy of a recent scan of the battery before purchasing or settling the price. Most dealers will scan the batteries and show the results if you ask, but otherwise get someone from your local EV Owners group to assist.
Below we have posted the latest data from the Flip the Fleet communal database on leaf SoH measured by LeafSpy (upper) and dashboard bars (lower) for cars. The graphs show the percentiles: 50% is the middle of the pack (half have a higher SoH and half lower); 5% of the EVs have a SoH less than the 5th percentile, and 95% above it.
Be aware that the top (twelfth) bar on the Leaf’s battery health display (extreme right of the dashboard) is worth more than the bars below it i.e. the 12th bar drops off when the SoH drops to around 85%. Thereafter the each remaining bar drops off at about each 6.25% drop in charge holding capacity. Therefore a 10-bar Leaf is likely to have a SoH somewhere between 72.5 and 78.75% SoH.
Below the graphs we present the percentile estimates as numbers for more accurate benchmarking.
If you buy an EV, please sign up at www.FlipTheFleet.org and contribute your data for the people following you: this is the “By EV owners, for future EV owners” approach.
Battery State of Health in percent, by model year
Battery State of Health in bars, by model year
Table view of the two graphs above (the sample for each model year is displayed in the n columns)
Odometer readings for Nissan Leafs participating in Flip The Fleet, by model year, as at 24 July 2017