Even though this battery offers a lot more power, the battery will only extend your Treo Pro by 4-5 mm and your hand will rest comfortably on the battery door which is included.

The door is made from a hard plastic with a smooth rubberized finish, so you will have a better grip of your phone and it will help reduce scratches.

• 3500mAh - up to 130% more capacity than the original
• High quality Japanese cells
• Includes a black extended door with our soft-touch "rubberized" texture to  improve grip
• Extends the depth of your device by only 4-5mm