johnlocke wrote:As an owner of a 2016 4 bar loser, I can tell you that my experience is that the Leaf spy numbers matched the actual usable mileage fairly closely. For the last year I've been routinely driving the car to LBW or less fairly regularly. LBW is a fixed number of GID's (50) so I've watched the LBW creep up from 13% to 21% of power left when the nice lady announces LBW. Range has steadily dropped over time,
I agree 50 GIDs is LBW but the issue is where on the voltage curve it is occuring as the GIDs are based on measurement and calculations. It is my understand that as the capacity of a battery declines, the knee tends to stay around the same voltage but occurs at a lower Ah value. The portion of the battery capacity after the knee may hold a relatively constant amount of energy.
If the 50 GID point occurs at an increasing voltage as the battery degrades, or even just as BMS recalculates and places it higher, then the effective capacity as seen by the driver degrades. The only way to confirm this is to do a full discharge under controlled conditions to explore usable kWh remaining below LBW and indications are there is more than the 4kWh suggested by LBW.
At least you are getting a new pack so will have range fully restored. Thanks for the feedback.