Last spring, as my 85D turned one year old, I was slightly disappointed to see degradation appear to accelerate, with displayed range falling almost daily. 90%, which had originally been 243-245, fell to 233 or 234, with 100% barely eking past 260. Roughly 3.5% degradation in the first year and 16,000 miles. Not significantly worse than promised, but a bit of a bummer, nonetheless. As recommended at annual service, I did a couple of range charge --> 10% cycles and crept back up to 263 or 264. Not terrible. The big surprise this summer, approaching 20,000 miles, has been that the last range charge was 267 (vs. original of 270), with subsequent daily charges to 70, 80 or 90% all prorating into the 265-268 range. Warmer temps? (Summer comes late to SoCal, but once it comes, it can be hot.) Longer (recreational) runs and fewer seven-mile daily work commutes? Or the latest firmware upgrade? Today, I was puzzled to see that a 75-miles golf commute which usually averages 300 - 320 Wh/mi and 85-90 range miles instead consumed only 288 Wh/mi and 80 range miles. Same speed and AC use as always. Anyone else experiencing similar "summer rallies"?