If I was going to buy a Battery, and if I had extra Lighting and other options which I do..as a Tech I would look at the best fitting battery, with the Best reserve rating..This way you can calculate how many amps it Takes to run your option without the Engine running...lights radio and etc..and see what the reserve amp hrs. are with that Battery, and Purchase accordingly..Dont buy a cheapy redone battery as they are problems..You have a 14k rig buy a 150 dollar Battery..you get what you pay for these Days...Do your Math