What amp battery isolator do I need?
Size your battery isolator to handle the max amp output from your alternator. The max amps your alternator will output can sometimes be found in the spec sheet of the vehicle. If you don’t have this or can’t find it. It will typically be stamped onto a metal plate on the alternator itself.
Can I hook up a second battery for car audio?
Having an extra battery will help your system sound better at higher volumes and can dramatically increase the longevity of your amplifiers.
Why do I need a battery isolator?
A battery isolator helps to ensure that the starting battery has sufficient power to start the engine and recharge the batteries if, for example, loads on the auxiliary battery (e.g., refrigerator or navigation lights) cause it to be drained, or if an auxiliary battery fails.