Have a FT 891 what size battery do I need

I have an FT 891 AND I WOULD LIKE TO KNOW WHAT SIZE BATTERY I NEED TO RUN THIS RADIO FOR FEILD OPS.

@John_Broome
Your FT-891 is a 100 watt radio. The Bioenno 1230A (30 Amp Hour) will run that at full power of 7 hours and the 1250 A (50 Amp Hour) will run that for over 11 hours. Of course if you want to run it at 75 watts, you could run it for 6 hours with the 1220A.
My recommendation which is less power but reasonably priced is the Bioenno BLF 1215A Bioenno Power LiFePO4 Battery BLF-1215A
This will run your radio for about 6 hours. Don’t forget the charger

Bioenno Power 14.6V 4A AC to DC Charger BPC-1504DC

Note also that these Bioenno batteries come with Anderson Power Pole connectors

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