Happy New Year, everyone, I bought these a couple of years ago and never used them. They adapt the NC-50 charger for FNB25, 26, 27, and 28 batteries used in the FT26, FT 76, FT415, FT530, FT815 radios. These are new in original Yaesu box, $10 shipped prepaid USA. Thanks for reading and 73 to all, Mike W2IY