I've been wheeling the heck out of my Jeep this past few weeks. I was rolling with the big boys most of the time and we found lots of super deep mud holes and plenty of winching.
Decided it was time to do a little upgrade on my battery and cables. My old battery was fine but it would struggle under a big load after about 1 minute of pulling. I did a bit of research and decided to skip right over the Optima and get a good battery.
X2 Power AMG from Batteries Plus. 880 CCA and 134 minutes of reserve capacity. It uses virgin pure lead and AMG construction. I got the model with top and marine posts so I could add additional cabling without cluttering up the top posts.
I put a new #4 ground terminal from the battery to the block and added another #4 grounding cable from the battery directly to the winch. In addition to that I have the winch grounded directly to the chassis. I also have an additional #4 grounding cable from the battery to the chassis.
I added a #4 charging wire directly from the alternator to the battery. I used the existing #0 power cable from the battery to the winch that I installed last year. Also a hold over from last year is the #2 power wire to the accessory plug on the bumper. The original power wire from the battery to the starter and alternator was in perfect condition so I reused that one.
To some this might be overkill but it's very easy to overlook power and grounds when carrying the very large loads demanded by a winch. Where we go I just can't afford to have an issue.