FNB-83xh: 7.2v 2500mAh Long-life Ni-MH battery for Yaesu and Vertex radios. Replaces FNB-83, FNB-64, FNB-V57, FNB-V94. Charges up on the radio with original Wall Charger; also re-charges with Desktop Chargers (EMS-57-83, or Yaesu factory models). Fits radios such as VX-110, VX-120, VX-127, VX-130, VX-150, VX-160, VX-170, VX-177, VX-180, VX-210A, VX-400, VX-410, VX-420, VX-800; VXA-150 Pro V, VXA-210 , VXA-220 (PRO VI), VXA-300 Pilot III, VXA-200 Aviator Pilot II, Aviator Pro IV, ProV; Yaesu FT-60R/E, FT-250, FT-270, FT-277, FTA-230, FTA-310; Standard Horizon HX270S, HX370S, HX500S, HX600S, etc. NOTE: this FNB-83xh is an exclusive-design product, incorporating high-capacity cells. The casing is designed to accomodate these battery cells, so the battery pack is 1/16" thicker than a standard OEM battery. The fit on the radios is excellent. The battery fits under the belt clip. If you have a desktop charger with a tight pocket (where the radio leaves no extra room in the charger pocket), then the FNB-83xh and your radio may not fit in your charger together. The battery CAN be charged separately (alone) in any charger pocket. If you wish to charge battery and radio together, and your charger is the tight pocket style, then the highest-capacity batteries available for that purpose are the FNB-83x, FNB-V57x, FNB-V94.