amperage draw

[trunks9_us 10+ year member]

ok i have a zapco 9.0 and a kinetik 2400 how long will it take to drain the battery i have a 80 amp alternator and have not done the big 3 i am currently working on doing the big three i am going to try and do it this weekend. Anyways how long would it take you think to empty the battery while city driving, and highway driving? Now the battery is fully charged i think but how can i tell the battery is fully charged? I have a cigret lighter voltmeter and when the car is on the highest i have seen it is 14.0 but then again i am running a reference zapco 1100.1 right now so i am seeing it go from 13.8 - 12.8 when i am city driving highway is 13.8-13.5 so any ideas on my question would be appreciated.

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[xtremebassjunky 10+ year member]

the 1100.1 draws 130 amps when it is full tilt...

as long as you don't have the amp cranked i don't expect you to drain the battery completely...

the lights will dim... but it would take it a while to drain while driving, if you listening at a moderate volume

 

[Skip01 5,000+ posts]

Id charge that batt like twice a month if i was you...just to insure its getting a full charge

That 9.0 will draw a good bit more than the 1100.1.....good luck