Which firmware gives the BEST battery life?

[crippen]

I had 48p and i managed 1.5-2 days tops.

I'm now on generic 08p and the verdict isn't out yet but I doubt i'll make much more than 3 days.

I do about 1hr of calls a day, and very light fiddling with the phone. No camera use, no music playing .. just some texting and constantly pressing side-volume every 15 min or so to see if i missed a call or msg ..

what is the MOST any of you have gotten on ONE charge?

Thanks for the info

[crippen]

I've been reading some posts here and noticed some users have a BT60 in there .. ? Mine is a BT50 .. I didn't realize this phone supported different batteries .. is this correct?I'm assuming BT60 is bigger (1100?) , what about the BT50?

Thanks!