I have a Panasonic DMW-BLB13 replacement battery that I no longer need as I have upgraded to the GH2 which uses a different battery....grrrrr!!
This battery was purchased new a few months ago and has been on the charger maybe 2 or 3 times. It has mostly been in my bag as a backup. These batteries go for $40+ but I'll part with it for $25 to a Continental USA buyer only. I'll even include shipping.