SxU
I'm so sorry to hear that. But is that severe is your battery problem? As the power circuit isn't dammaged, your phone will last quite long (mine for 4-5days with around 1000mAH batt on normal usage (10mins calls per day and few SMSs, no GPRS)-i dunno the exact since it doesn't imprint the capacity)
I use my own modded CG (which i made it minimalist), single SIM Card (putting dual one on E680i is quite hard since there's almost no space behind battery cover) and run only what-i-need processes. And top of that.. i use "ugly" GUI (no screensaver, extra clock, etc)
I think the important part is to use it properly, to charge the batt properly (don't exceed the limit) and keep it in clean, cool environment just like another electric appliances.
I was part of that strange race of people aptly described as spending their lives doing things they detest to make money they don't want to buy things they don't need to impress people they dislike. -- Emile Henry Gauvreay