The winch will drain your battery with continuous use, obviously. You need to make sure your alternator is up to charging your battery after winch use.
Biggest fear for me is using the winch late in the day, driving short distance to recovery camp and shutting truck off before the battery has had time to
charge back up for the morning start.
Look at the winch motor as a starter motor, you do know how fast you drain the battery if your truck won't start and you keep cranking the starter over and
over. So just make sure you take a break in between winch pulls, if you are really working your way out of a big stuck to charge the battery back up.
Keep your hand on the winch motor, if it gets really hot then stop and charge the battery and let the motor cool. Lets the contactor/solenoids cool.
Proper management of the system is important.
In my experience, the big failures in winching is bad grounds. Keep all the connections clean and tight. Keep winch line spooling evenly, if its wire and binding, it's
creating a huge resistance and heat in the motor. That is hard on the battery and the winch motor. Carry a spare regulator for your alternator, know when your system has
failed to charge. If it's not charging, then you want to know. my .02