Why Have A Dual Battery System. In the F-250 the passenger side battery is tied directly to the starter for main starting power and the driver side battery is the reserve battery and used for running all the electronics in the truck and helping the passen. A dual battery with an isolator for those who dont know is pretty much what it sounds like.
For my particular application I made a decision based on the following. 2020 F-350 67 Rapid Red. But thats more of an exception to the rule and youll still need an isolator to have your back.
That system functions well where cranking loads are small but a dead-flat starting battery may not receive enough power from the deep-cycle battery to.
At its most basic an automotive dual-battery system with the batteries connected in a parallel circuit essentially doubles the amount of electricity you have available. This article explains the different solutions to keeping your fridge running and lights on without bias or attempts to sell any dual battery system products. Why You Might Want to Add Another Battery in Your UTV. What are the top 3 upgrades Ive done to my Gladiator.
