Do you need a receiver battery too?
I have a Lipo like the one pictured for sale as well. It is a ProTek R/C Li-Poly Flat Receiver Battery Pack (7.4V/2300mAh) (w/Balancer Plug). The wrap is pretty worn so I have duct taped it. It works fine just doesn't look that good. I can add that for $15 more so $40 total shipped for the blinky and the Lipo.