http://www.kinetikaudio.com/

is like a battery just for the amp?

i have all stock electrical system(battery and alternator)

i want to set up my system

1 - 12" Solo X
2500 RMS(5000 Max)
and
1 -Hifonics BX165D
RMS Power Rating: 1600 watts x 1 chan. @ 1 Ohm
RMS Power Rating: 1100 watts x 1 chan. @ 2 Ohms

im going to run the sub at 1 ohm
which the amp is stable and it would push about 800 to 1600 RMS

and i saw there selling a Kinetik HC600 Power Cell
for $60 which i think its kinda cheap compared to its price which is $199
http://www.kinetikaudio.com/hc600.asp


and im also getting a Yellow Top Optima Battey but till next week
and i will also replace the car grounds to 0 AWG

but the HO alternator i cant seem to find one
its for a 95 Ford Probe V6
A worker from a Car Audio Store told me that stocked alternators can be customize to out put more amps

like i said i don't know much about Power Cells so i don't want to buy it if it wont do me any good