"my friend has a seperate batteries to power his amps. "

He has A seperate BATTERY or has seperate batteries?

If he has seperate batteries, how many extra just for the system.

How many amplifiers, and what models?

Which two memphis's subs?

What does partially sponsored mean? Either they pay for your stuff/helped payed for your stuff, and you advertise for them; or you dont.

And Lastly where is this audio shop at?