Needed equipment for second battery

[mobbdeep 10+ year member]

Hello,

I just purchased a Stinger battery as my secondary battery for my system which was in a big sale that I couldn't pass up. My question is, what else do I need to have in order to complete a second battery setup? Do I need a high current power relay battery isolator?

Thanks!

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[mobbdeep 10+ year member]

Bump.. still need help. I have an 05 Ford Focus, 1,000W monoblock Alpine amp, Rockford Fosgate P2's (2 x 12"), 350W 4-Channel Rockford Fosgate door speaker amp, and some Kenwood Sport Series door speakers.

Thank you!