Rapid battery drain after upgrading BB10?

Updated my BB10 software on BB Classic. Now the battery is draining in rapid fashion with texts and emails only? any suggestions?

Reboot:
[INFO]Hold the top button till you see a red LED and the BlackBerry logo. Ignore all prompts to reboot/turn off.[/INFO]

And keep in mind that after an update, the OS has to "settle down". Crazy behaviour like fast draining battery and the likes is expected to stop after 24 hours.

Had this problem and it went away after a while (about a week, maybe less). Now battery life is back to what it was. What I did do was drain my battery turned off my device and then charged. No idea if this helped but, like I said, I'm back in business!