I used cool recent weather (65 deg F evening, 62 deg F overnight low), to do a rare test of my 100% charge. Result:
271 gids, or 3.6% loss...
When I first finished my SOC meter in late Aug 2011, I never saw more than 274 gids, but with the onset of cooler Fall weather the readings went up, and I hit 281 for most of my winter once-per-month 100% checks. Last 281 was probably February...
RE "3.6% loss", wouldn't it be a good idea to calculate percentage losses, from gid readings, taken at similar temperatures?
You only have a about a 1% gid loss since your highest
gid count in late August 2011, right?
Were all those nights significantly warmer, than during your recent 271 result?
Do you have a similar charge temperature gid count recorded from that time (or later) to compare to the present?
Are the 11 bar LEAFs also seeing gid counts variable by temperature?
1. Yes, I am now setup to record garage temperatures, including morning, maximum afternoon (if car present), and minimum over-night.
2. Yes, 271 is about 1% less than the best I achieved last August.
3. Yes, Aug nights are all at least 5-6 degrees F warmer than the highest recent night temperatures, and most of the recent temperatures since my last 281 were an additional 3-4 degrees cooler than the highest recent night temperatures.
4. No, I do not have recorded temperatures from last Aug.
5. (11 bar LEAFs) I don't know. It is a reasonable question, but I would expect that temporary temperature loss would continue to add to permanent capacity loss.
My main concern about the coming summer is possible permanent loss from high daytime temperatures while the car is in the garage with most of a full charge, ready for a planned evening out. My garage gets quite hot in the afternoon, despite its insulated door and solar panels on its roof. The same conditions last summer didn't cost any immediate loss, but it seems possible that the loss effect could be cumulative.