LiFePO4 Battery Size Calculator LiFePO4 Battery Size Calculator Continuous Amp Draw (A): Icom IC-7300 (22A, 100W) Yaesu FT-991A (23A, 100W) Kenwood TS-590SG (21A, 100W) Elecraft K3S (15A, 100W) Yaesu FT-857D (13A, 100W) Icom IC-7610 (20A, 100W) Kenwood TS-2000 (18A, 100W) Yaesu FT-450D (16A, 100W) Icom IC-718 (14A, 100W) FlexRadio 6400 (24A, 100W) Yaesu FT-891 (22A, 100W) Custom Value Enter Custom Amp Draw: Transmit Power Level (W): Operating Time (hours): Application (Duty Cycle %): Select Application Amateur Ham Radio (50%) Boat Trolling Motor (80%) RV Battery (20%) Fridge (40%) SSB (20%) AM (100%) FM (100%) CW (40%) Digital (50%) Reset