Iv been trying out the aftermarket battery now for the droid x and i must say it works great. works just as well as my original one. if anyone is interested i bought it off amazon.
Amazon.com: Motorola Droid X MB810 Premium Japanese Cell Standard Battery (1500 mAh) - BH5X Replacement: Cell Phones & Service
Amazon.com: Motorola Droid X MB810 Premium Japanese Cell Standard Battery (1500 mAh) - BH5X Replacement: Cell Phones & Service