[shaggylive]

that all depends. some came with 1100mah and others came with 1650mah batteries.
If I were going to get one it would be the cheep 2400mah or the expensive 3?00mah.

couple of tips, I use the vistahidebattery so I can always keep an eye on the level. if it's <=50% charge it if only for a few minutes, it will help alot.

if you don't use exchange for email, disable active sync. I use quickmenu that autocloses it.
also there is a setting that tells active sync to start everytime the "time" is updated, so you can disable the network time sync, or there is another way to do this too, search.