Battery life on the HTC Hero was fair to middling, although we were impressed with a 1350mAh battery under the hood. It shows that there's probably a fair amount of processing going on at any one time when such a battery will only last around 1.5 days under normal use, as in all honesty we'd have expected more.
Actually, that's not a very fair statement, as the likes of the internet and sheer range of applications available meant that we picked up and played with the HTC Hero quite a lot throughout the day, and that's without the natural calling and texting you'd expect to do.
However, once the battery meter starts to fall, the phone quickly runs out of power, meaning as soon as the green bar begins to drop you should probably think about heading to the nearest plug socket.
The organisational aspects of the phone lie largely in its synchronisation with Google Calendar and Mail, with a bit of Facebook thrown in for good measure. You can observe your friend's birthdays, look at all your work schedules (if you use Google Calendars for such) and... well, that's pretty much it for the likes of organisational tools on the phone.
Of course, you can always synchronise your Microsoft Outlook Calendars too thanks to Exchange integration, but if you're looking for much beyond calendar functionality and a bit of calculation or stock information then you should probably head for the Market, where there's a whole host of extra application goodness to play with.