How long should the battery in my Ericsson last?

I have an Ericsson T68i mobile phone. How long should the battery last?
Saul, October 2003


done
I have a T68i and it lasts about 10 days or 240 hrs on standby

R Brownlee, June 2004
About 40 hours continuous stand-by use.

H.Wilson, May 2004