The evidence is anecdotal at best, but today is Day 3, I charged my Incredible (stock battery) from practically dead (~10%) for four hours this morning (8AM - 12PM), and it's been running since. Current stats (11PM):
11h 4m 3s since unplugged
Overall Current Battery Level (Green Bars) - 40%
Android System - 23%
Cell Standby - 24%
Phone Idle - 19%
Bluetooth - 10%
Display - 8%
Wi-Fi - 7%
Voice Calls - 4%
Camera - 3%
Internet - 2%
11h 4m 3s since unplugged
Overall Current Battery Level (Green Bars) - 40%
Android System - 23%
Cell Standby - 24%
Phone Idle - 19%
Bluetooth - 10%
Display - 8%
Wi-Fi - 7%
Voice Calls - 4%
Camera - 3%
Internet - 2%