On the right of the Driver's Info screen, the kW going out (depleting) or in (regen) is shown. Just after a full charge a thin line appears (only when you ARE "regen-ing") below the icon showing the amount of regen "available". After FULLY charging, this is near-zero. As you use up energy, making room in the battery for more, that line descends until max regen is achieved, then it disappears. It only takes about 3-4 miles of driving (5 minutes?) to use up 1 kWh (@ 4 miles per kWh) to regain good regen capability. If you do not charge to full, you may never notice this. I did not find this until another Forum member pointed it out to me. Then it was clear. Since I nearly always charge to Hilltop Reserve (90% charge) I do not often get to see that regen available building back up. Happy driving!