I am using the BAMF 1.6 Debloat ROM and have the 2750 mAh battery. When I reboot, I get a battery hit as well, usually pretty significant. However, with this ROM currently the battery life is great! I have been on the phone for about 45 minutes and gotten about 40 emails and read/responded to them and still at 97%. I drove to this client's office about an hour ago and it was plugged into the cigarette lighter, but the above activity has been SINCE it was unplugged!
With the STOCK ROM. I'd be lucky to make it for 4-5 hours!