Jeep,Alternators keep dying and killing batteries

The faulty alternator in my 2011 Jeep Wrangler wore out the last battery I had. I replaced both and that worked up until recently. The vehicle has about 172,000 miles on it at this point and I obviously need it to be reliable. The battery has been running low on power again so I think I have the same problem. Is there an alternator on the market that will stand up to my use?