2nd Battery not preforming like I expected.
Alright guys here's the deal:
I take my car to the local drive in regularly, and was using my carputer for the radio, but my problem is after about 1.5 movies the battery is dead. Im running an i5 with a 40w kenwood amp and hd radio. So my thoughts were simple as this. Wire in a 2nd battery, extend computer life to last 2-2.5 movies. Well, I wired it in, and the computer still cuts off about 2 hours into the night.
My batteries are wired directly to each other. + to + / - to - with fuses in the appropriate places. No isolator or switcher, because Im using the same sized battery, with power being pulled off the + terminal of the 2nd battery.
Am I just stupid for thinking it would work this way? Or.... is something wrong?