I have the Seidio 1750mah battery. Loved it. But I needed more battery life. I have the Seidio Innocase Active for this battery. Loved it as well. Bought the HTC 2150mah battery. LOVE THIS. I get a whole day and a half of usage at times. However, there is no case for this. I just got the HTCpedia extended battery case. http://shop.htcpedia.com/index.php?dispatch=products.view&product_id=1104. Talk about disappointment. It looks like a case from VZW that the opening has been cut out. It's pretty lousy. The cuts are irregular and not smooth. I could've done a better job. Now to my actual question. Will the Seidio Innocase Extended case for the 3500mah battery fit my DINC with the 2150mah battery? http://www.seidioonline.com/product-p/csr5hddnx-bk.htm. Love the protection and feel of my Seidio Innocase Active.