Samsung Galaxy S II :: Who's A Low User Of Phone And Its Applications

As a novice SG S2 owner I would be grateful for the opinions of more experienced SG S2 users as to what the battery life should be for someone who's a low user of the phone and its applications?

For example how long should a full battery charge last for someone who makes very few calls and receives very few calls per day sends less than 10 texts per day and receives less than 10 texts per day, plays no games and surfs the internet very infrequently and plays music very infrequently? In other words the phone spends more time on standby than it does in actual operation.