The extended battery for the HTC device is a 1800mAh Lithium Ion Polymer battery. The extended battery may not fit with cases designed for the standard battery because of the added width. An extended battery door is required for this battery to work with your phone.
The HTC 1800mAh Extended Battery (35H00117-04M), manufactured by HTC is compatible with the HTC Fuze, HTC Touch Pro (GSM), Alltel HTC Touch Pro, and Sprint HTC Touch Pro. Not for use with Verizon Wireless HTC Touch Pro phone models.
