How big of an alternator do I need for 5000 watts?
Ultimately you need a 5000 watt alternator for a 5000 watt load, but if you consume 5000 watts inside your car it will be effectively an oven and you will die soon. You will also need special signalling to your engine ECU to tell it that the AC is on so that it doesn’t stall.
Which car battery is best for sound system?
The best car audio battery you can find is the XS Power D3400 12V High Output Battery. This power cell has the highest power output, so it will be able to run even the largest of car stereos.
What size battery do I need for 8000 watt amp?
12 volt 35 amp batteries contain 12*35=420 watts so 8000 divided by 420 is 19.05 batteries.