I have on set up under tha passanger seat for my ps2. I have it wired to the power supply from my sound system. I do have an optima red top, but my inverter has a switch on it so it isnt always on.

Ive taken long road trips (hours) with the invertor on, and enjoy some gameplay on my lunch at work without any problems to date.

Hope i was of some help, if anything you know where we're at

.........x