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Parts list:
Dual USB Port Marine Boat Car RV Voltmeter 12V Socket 4 Hole Panel Switch Kit US: https://www.ebay.com/itm/DualUSBPor...
SAE Power Socket: https://www.amazon.com/gp/product/B07...
Academy Sports Ammo Box: https://www.academy.com/shop/pdp/acad...
Cabelas rechargeable battery: https://www.cabelas.com/shop/en/cabel...
16 Gauge wire
Insulate Terminals (mine came with the voltmeter and switch linked above)