MECHMAN 10+ year member
Senior VIP Member
Your factory 136a alternator is putting out 75-85a @ idle? Our units can double that at idle and and double your peak output too as a bolt-in installation as they are designed and built for this kind of use.
Sure, you CAN run without a good alternator and add more batteries, but you really need to upgrade the system as a whole to get the proper performance out of your amplifiers.
Your 136a factory unit was designed to run your vehicle with enough extra amperage to run aux driving lights or other small additions to the system. If you add 176a of demand from a 2200w amp then your amp alone is exceeding your output of your alternator and you will see the voltage drop. With a 2200w amp in your current setup I would recommend a 220a high output alternator and a quality AGM battery under the hood. If your Jeep can fit the group 65 battery the XS Power D6500 will drop in place of your factory battery and is rated for systems up to 4,000w. Then you won't need a second battery, just good cables to get the power to your amp.
Sure, you CAN run without a good alternator and add more batteries, but you really need to upgrade the system as a whole to get the proper performance out of your amplifiers.
Your 136a factory unit was designed to run your vehicle with enough extra amperage to run aux driving lights or other small additions to the system. If you add 176a of demand from a 2200w amp then your amp alone is exceeding your output of your alternator and you will see the voltage drop. With a 2200w amp in your current setup I would recommend a 220a high output alternator and a quality AGM battery under the hood. If your Jeep can fit the group 65 battery the XS Power D6500 will drop in place of your factory battery and is rated for systems up to 4,000w. Then you won't need a second battery, just good cables to get the power to your amp.