Seidio seems to be working very hard on their OEM battery line for BlackBerry devices. This time they have outdone themselves by increasing their original extended battery from 1300mAh to 1500mAh. They claim you will be seeing 30â€“35% more battery life than the original 900mAh battery that comes with your curve. The best part is that just like the first extended battery from Seidio, this battery does not require you to have any new back cover since the form factor is the same as the original RIM battery.
The battery is available for shipping now from SeidioOnline.com for $44.95
If you still want some serious battery power you can get their 2600mAh battery that requires a new back cover for your Curve.
Note: The battery is also compatible with older models such as the Blackberry 8700/8703e and the 7100i