Vertex FNB-126LI-UNI is the one I have. 2300 mAh. I think it has been discontinued, but many others are available. You need a special charger. http://www.vertexstandard.com/lmr/Accessories/Portables/Batteries Tight fit with the belt clip on the FT-60. Great on my FT-270 and 277. Good luck.