Keveeno

What if I have just 1 singer 320?

Yes thank you for reminding me for the second time. I have now modified the post so that it does not indicate that the car will be off. Yes the car will be on. Can someone at least tell me if I can demo a few songs (with the car on) without the battery discharging completely or not?

I never play with the car off as it is. Never will play without the car on.

I really don't want to invest in such an expensive battery to only be able to demo for like half a song and then let the battery charge up.

Alright, in short, singer 320 amp alt, xs power d3400 up front, xs power lithium 30k in the back, 1 sundown scv7500 running at 1 ohm. How long roughly would I be able to demo the system till the xs power lithium 30k completely discharges?