My usual useage is
2 hours of music
Data connection on all day
Social networks Facebook, twittet , XDA, TSR etc 2-3 hours
Web search about 30mins
Whatapp 4 hours ( requires data connection)
Messaging 2 hours
This is my daily usage on the phone.
Standard HTC battery lasts about 4-5 hours on full charge
1600mah HTC battery lasts about
7-8 hours on full charge
A big improvement!
Sent from HTC Desire HD using Tapatalk