i bought from: ebay 3200mah Extended Battery w/ Door Cover Black.
Sale date: 08/23/11 (08/2011).
Price: $8.99 + $5.99 Economy Int'l Shipping.
using it now for more than 5 months.
Phone in full charge battery last: 5 days (normal use).
*The battery will reach 100% but you need to wait more time to get the full charge icon.
Thankyou شكرا ありがとう Gracias Grazie