The Seidio 2400mAh Extended Battery provides approximately 100% more capacity than the 1200mAh that initially ships with the Treo 750 but adds very little to its thickness. This is the answer for those on the go. Even with heavy phone and data use, this battery will keep your Treo going through the day and longer.
While we have packed a lot of power into one battery, this product only extends your Treo 750 by 4-5 mm! In fact, the extended battery cover will make holding your Treo 750 easier. Your hand rests on the battery cover quite comfortably. PLEASE NOTE: This Extended Life Battery will increase the size of your phone making it too large for standard fit cases. | 
