I am putting a 16,700 watt SPL sytem in my 2000 Chevrolet Monte Carlo. I already have three 390 am alternators under my hood. I am putting nine SK-BT120 Shuriken batteries in the trunk and removing the front battery. I want to isolate one of my nine batteries in the trunk to dedicate to the starter or all that power will burn out my starter. I saw Metra IB200 200 amp relay/isolator and wanted a relay that would switch and separate one of the batteries from the rest when the starter wire is activated to start the vehicle. When the starter is not cranking, the battery would be connect to the other eight so it will be able to charge and power my stereo system. Would a battery isolator do what I need even though it says it's a relay? I basically want all 9 batteries for my stereo, but when I start my car, isolate one battery for the starter only when starting vehicle temporarily. Once vehicle is started, the battery will be connected to the other 8 batteries. What should I use?
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