Need help putting together batteries for a new work application. Hoping someone on here is less confused than me about lithium batteries.

The application would be running a 12 V electric drive reel, drawing 80 amps at full load (960 watts). We would be running it on and off throughout the day, likely 20 minutes on, 15-20 minutes off 20 on etc. for a total of 5-6 hours/day of actual runtime. Most of that runtime would be under load, but not necessarily peak load.

I know lithium is the best option as I don't want to lose power throughout the day and will also need to charge quickly overnight to use back to back days, however I am somewhat limited by procurement.

Question is, will one 12 V 120 Ah battery be sufficient for the task? I know with a lead-acid battery that would only get me 1.5 hours or so of actual run time, but I've been told that with lithium I will get 4 times that. If not one, what do I need to cover 5-6 hours of run time?