Running 2 batteries is good if you have to make long pulls or if you have to make a lot of pulls. The best advice I could give you is if you have to use your winch make sure everything that you can turn off is off before you start. Having a second battery is good for back up or if you want to split the load off your main battery. One of the first thing we do is to run a high end alternator that can charge the battery quickly and then upgrade the wires. On my truck I will be running two batteries. Everything that I will use off oad will be on my second battery. For the stereo it will be on my main battery along with a few led light bar's. 2 at the most. The other 4 light bar's will be on my second battery along with my winch and cb radio. When it comes time to use my winch everything will be turned off with the exception of my cb and one light bar. I will also be running 2 battery gages as well to make sure my batteries don't drop to low. I hope this helps. Just use some good common sense and keep an eye on your gages and you should be good. I run the same battery in my Tahoe and I have 1500 watt stero with electric fans as well.
