Or you have some background process eating battery or it is broken. With new battery and some energy saving tricks I was able to get even 8h of life with normal apps running and some browsing.

Life was reduced with more internet browsing, audio or using in bright light down to 2h when viewing movies.

Everything went down with battery, screen degradation for 2 years but even now I get more than 3h for my regular use (mostly fbreader and some fact checking on internet).