This weekend I did something I don't really practice, that's leaving the Roadster plugged in from Friday evening to Monday morning topped off on a standard mode charge. I typically leave the pack sit at 50-60% SOC over the weekend since that's the SOC the lithiums like best (and 26F or below temp). Every morning I charge the roadster so it has 1/2 hour to balance and typically the pack balances out in 15-20 mins. The balancing grid of diags is all 0's if fully balanced and shows 1's in the brick/sheet matrix that need to be brought up and balanced. I use to think was the true tale of balancing, but I found out its not! Its just a really close rule. When I tapped into my Zero electric motorcycle's com port (hack) you can get all types of cool data and tweak the bike a bit. The nice thing that, I wish this was public accessible, are the balancing values. In the Zero instead of a 0 or a 1 it shows how far off each cell is in Volts from one another. In this fluke of an experiment, my CAC stayed the same, around 155.13 but my ideal standard mode range had increased by 3-4 miles on my Tuesday morning's charge. All after sitting at 80-84% SOC for the weekend. Every charge now hits 187 and that's after sitting for 2-3 hours so its a real number. Before this experiment, I was charging up to 184 ideal miles consistently and also didn't seem to stick as well as the 187 after I drive off you can see the miles drop fast sometimes in 2-5 miles of real tarmac. So now it appears that if I want to keep the pack truly balanced to its optimal peak that I need to let it sit for a weekend in std. mode every so often. I'll see how long this 187 std charge range will hold true. I'm guessing every 4-6 months doing this to keep things optimum.