Most factory automotive batteries are wet cell lead-acid batteries—and they are always sufficient for the power draw of your stock vehicle. If you’re adding more draw on your electrical system, you should be checking out a battery with a higher reserve capacity and amperage. While there is the obvious reason for increased battery power if winches, lights, or large stereos are added, is there a reason for upgrading to a better battery if your electrical system remains otherwise stock? In the off-road world, we’d say definitely yes. The great majority of off-roaders use AGM (absorbent glass mat) batteries that are sealed, can be mounted at any orientation, and are spill-proof—much safer for an off-road vehicle. Beyond that, an AGM replacement battery will almost always have a longer reserve capacity that will allow you to listen to the radio longer at camp or run a portable freezer/fridge for much longer.
