I run 8000lb winches (some China, one Ramsey) on my JD 4300. Have an Optima yellow top hooked up as main winch power source. This is kept charged off the main battery circuit. I have killed the battery once, broken a cable once, in the past 8 yrs....
Everything rides on the 3pth with the winch plugging into a 2" receiver.
I drag the logs out to where I can hook a chain from the winch bracket to the log, lift and skid.
(got three 8000lbers that get moved between tractor, float and pickup truck.)