TickTock wrote:GIDs increase in the fall, but not capacity.
Thanks for the comment. Is there any indication, however subjective, that higher GIDs translate to more range or do they simply get corrected downward more quickly?
Nothing in my data suggests that my range or capacity increased when I saw my gids increase seasonally
starting at the beginning of October or degraded at a faster rate when the gids plummeted starting in March. However, I do
think the latest sw update did slightly increase my available capacity/range and that was
accompanied by an increase in gids.
Below is my capacity chart to date. I annotated it to try to avoid some of the confusion since the gid readings (blue dots) have a lot of volatility and in some cases almost smear into the gid readings of the prior year (i.e. variation almost as high as the annual degradation). The 2011,2012,&2013 labels and associated lines are there to help distinguish between the blue dots from year to year.
- blue dots : gids (times 0.08 to give them the same units as the wall power measurements)
red, orange, green dots : power measured from the wall to go from 5 gids to 100% charge for 2011,2012,and 2013 respectively
purple dots : linear fit to the power from the wall to show general average trend.
I annotated the first time my car was reset in 2012 for the Stanfield test where you can see a marked increase in the gids (blue) but no obvious increase in capacity (0 to 100 wall power (orange)).
I also annotated the sw update on 7/10/2013 where you can see a clear increase in gids (blue) and a slight increase in wall power (green). I think my data does show that capacity (green) did increase slightly for me after the sw update.
In short, the data shows that, with the exception of the sw update, capacity is declining steadily but the gids fluctuated quite dramatically with the seasons. It will be interesting to see if the seasonal variation in the gids persists this fall (if the improved accuracy and temperature compensation will translate to less seasonal variation in gids).