http://www.amazon.com/Anker-1600mAh...9A/ref=sr_1_15?ie=UTF8&qid=1318871003&sr=8-15
Bought it and my battery life is very good now, I can actually power use my phone without worried about battery. I played fruit ninja and played music via 3g with the speakers for more than an hour and loss like 15% percent battery. Went to bed with the battery at 12% and when I woke up it was at 8%. I can't get you any technical specs but the battery is alot better than stock, and for the price you can't go wrong.
Bought it and my battery life is very good now, I can actually power use my phone without worried about battery. I played fruit ninja and played music via 3g with the speakers for more than an hour and loss like 15% percent battery. Went to bed with the battery at 12% and when I woke up it was at 8%. I can't get you any technical specs but the battery is alot better than stock, and for the price you can't go wrong.