Hey,
I'm guessing my only option for "cheap" is SLAs right?
I found some 12v 18ah Universal Batteries here($31.99 each): http://www.buy.com/prod/upg-ub12180-sealed-lead-acid-battery-sealed-lead-acid-18ah-12v-dc/q/loc/111/208713952.html
would they be good enough?
would deep cycle batteries be...