****I am writing this review because I haven't found ANY for Gorillagadgets and seeing as how they have what appears to be an amazing battery at a dirt cheap price, I couldn't pass it up**** So I recently purchased the 3500mAh extended battery from gorillagadgets.com. The battery cost me $22 with free shipping, and came with a replacement door. The battery arrived within 3 days of it shipping (came from CA and I live in VA), and I read that in order to get a true full charge out of the first time, i needed to drain the battery THEN charge it for however long it took, plus and extra 2-3 hours after the LED went green. I received the battery today, and automatically threw it in. The door feels very nice in my hands, I like the weight, and the feel of the extra bulk to my phone (but that's just me). It's color is very similar to the OEM model door, only downside is I have YET to find a case that will fit the extended battery. I turned the phone on with the new battery at roughly 1 p.m. and I turned on the GPS, bluetooth, and wi-fi to really drain this bad boy. I surfed the net, watched youtube, played some Angry Birds (my new addiction). The battery didn't drop below 10% until 11 p.m. Remember this is just from me throwing it in the phone and letting it run. I am currently charging this bad boy over night and will run it thru the paces tomorrow during an average day for me. With the OEM battery I would need to charge it usually 2-3- times a day. Let's see how well this one stacks up. I'll be updating this as I test it out.