A few people in other threads have asked me to report back on how this battery worked. I have been getting about 12-15 hours with light to moderate use (no 4G or WIFI. Texts, emails and 5 or so calls) with the stock battery still at 25% going on the charger. Charged up the Seidio and used it yesterday. Same usage as the stock battery except I ran my laptop using the hotspot. This ate up some battery as expected. I went from about 90% to 68% in the 30 minutes of hotspot use. The battery still made it 13 hours of moderate use before hitting 8%. Today should be a closer comparison with my stock battery as i am not using the hotspot today.