Wirelessly posted (HTC Diamond: Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; IEMobile 7.11) Sprint MP6950SP)
Yeah, the gsm battery kinda stinks.
I have the cdma model so the oem battery has a little more juice.
I suggest www.seidioonline.com and input your model number and several options should show up for you. Good Luck!