Battery Isolator.

[MONSONwarrior Premium Member]

I would like to know if I need one of these for adding a Deka G-31 to my system when I have a Deka Intimidator 9A78DT up front. Some people say that if they aren't the exact same battery they will discharge, any thoughts? If I do need an isolator, what size? I'll be running 1500 watts from my AP-15001 with 0 gauge from front to back. Big 3 is done if anyone needed to know that.

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[Nathan@XS Power 10+ year member]

No you do not need to run an isolator in a car audio application like this.