WindyNation 4 Gauge 4 AWG 25 Feet Black + 25 Feet Red Welding Battery Pure Copper Flexible Cable Wire - Car, Inverter, RV, Solar

How many amps can I put through this?

Can I use this for car audio applications?

I’m running 17’ total length through a chase in aluminum boat to outboard for starting (battery in front) What is drop in amps in that length?

How much for 250 ft of white #4