As I mentioned, I have a 2001 Insight; about 48K miles.
After reading a few sites about how to get the 'most' of your Insight, I've been trying to put a few 'tips' into practice. One of tips is to floor it at gear 1 & 2 from a stopping position, and then throw it into gear 5; the theory being that your electric battery will be used to it's fullest extent, and save gas.
So, after a half hour drive on the highway, dinner, and a half hour drive back to the house, driving at 55 mph and conserving gas, I had a nicely charged battery, only a few bars from the top.
So, 1.5 hours later, time for coffee. Within 5 minutes of driving (no highways), my battery has dropped to half. Within another 5 minutes, my battery has suddenly, without warning, dropped to 2 bars. And I'm not going to be getting anymore electric boost on this particular trip, thus forcing me to use nothing but the puny gas engine.