I own a HTC Desire Z. This battery is obviously * not * original battery, because, firstly, the charge status is not detected correctly from my phone (already full, but after 3 hours properly used empty after half an hour allegedly again) and, secondly, even after attempting to fully charge it ( overnight), he brings only about half the power of my now 1.5 years old original battery ... Have it now almost two weeks with the battery trying to ultimately come back but the much more powerful original battery into the device. So definitely rate from the purchase!
Addendum: There are obviously a better and even cheaper alternative: See "Anker 1600mAh Li-ion Battery for HTC Desire S, Desire Z, Incredible S, Incredible 2, Salsa".
