Yeah, def a problem not running and just using a stock bat. this will happen on any systemWell like i was saying, i am new obviously, and my two 12's are hooked up to a 600 watt RMS, Sherwood 250x2. I can literally watch it drain my battery when the truck is off, should this be expected because my alternator isn't running, or is something screwed up? It's just a regular battery not a yellowtop=(