Hi.. my battery only last for around 1 day standby(with around maybe half an hour talk time)
I'm wondering is that normal?? :(

My 3650 battery lasts about three days with moderate use.

My batery goes about 10hours - so its pretty shit.
1day is max. that my battery goes.

Try not to have many apps running on the background. Apps like psiloc screensaver,task manager, one2go , active desktop,etc... drain to much battery

yes sure, i have this app in background but i need this app like batery
i have miniGPS, scsSaver, eProfiles.

How do I know what program is running on background?

If you have Appman or Task Manager installed, you'll be able to see what are the running apps, processes, open files plus installed apps.