Battery Life, where to buy for 6700

[masters]

Ok I'm tired of carrying around the cord for this phone.. I can't believe the battery life on these phones is so bad..

Where are people finding the best battery for the phones?? I'm not looking at taking a chance on ebay..

Is this really normal?
Almost as soon as I unplug it, 90%
5 Mins 80%
10 Mins 70%
15 Mins 50%
25 20% (alarm chimes battery is low)
30 Mins 10% remaining

This was with 6700 WM6, backlight on (ir off, BT on but not linked) and surfing the net..