anyone try this external battery?

http://www.amazon.com/Hyperion-GT-i9250-Compatible-International-GT-i9250/dp/B006ZBGBKG/ref=pd_ybh_9?pf_rd_p=280800601&pf_rd_s=center-2&pf_rd_t=1501&pf_rd_i=ybh&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=0HZKMCPX8NPP5C6NSQA1

16 bucks for an 3500mAh

if anyone has could you upload an image of how much extra bulk it adds?