I am also experiencing crappy battery life after flashing my Captivate to Cognition v2.3b8. I know for a fact that I did not have a full battery when i did the flash. I did the battery calibration but it only helped with the charging percentages being off.
Would it be advisable to flash back to stock, charge battery, (or leave it plugged in the entire time) and reapply Cognition?
Nevermind, I will try the instructions from the ROM forum first:
HOW TO: Reconfigure Battery Stats
When you flash a new ROM it may be necessary to reconfigure your battery stats.
Signs you may need to re configure:
1. . Using more then 10% battery in an hour or less
2. . While plugged into the charger you lock screen shows a different percentage charge then the battery icon
3. . After a full charge your battery icon only shows 99% and quickly drains.
4. . Any general weird battery activity
Step by step battery reconfigure process: (This is the process that has worked for me time and time again with ROM after ROM)
1. . Flash the Rom on a full battery. (skip to step 6)
2. . If you flashed on less then full plug into AC charger asap and charge to full while the phone is powered on
3. . Once the phone blinks full 2.1-battfull popup shows 2.2-battery sign shows on left of notification bar power off
4. . Charge till full while powered off. the phone will vibrate and the green battery will show 100% in white text
5. . Unplug phone and power on.
6. . Using Root Explorer or a comparable program navigate to (Mount R/W first): data>system> and delete file batterystats.bin
7. . Reboot
8. . While the phone reboots it will rebuild that file and the software and phone should now match.
9. . If any of the symptoms persist start at step 2 and repeat.
10. . As with any rechargeable battery fully discharging the battery once in a while isn't a bad idea
..... haha i think i was better off not knowing, b/c i have absolutely no clue what you just said
