I read on here yesterday that turning on the headlights can change to a more aggressive charging program. So today I turned on my headlights, and my battery stayed closer to the top of the charge guage regardless of how I drove. No longer worried about draining the battery, I revved the engine more aggressively and used assist more often and at higher levels. The thing is, my mileage did not go down at all. I am still at 62 mpg, and the Insight is a lot more fun to drive. Granted, if I was shooting for 80 mpg I doubt I could pull it off driving like this, but I think I could at least maintain my solid lo 60's because I get into lean burn a LOT sooner. Any advice?