diyAudio (
-   Car Audio (
-   -   do amps have parasitic load on car batteries? (

hakentt 21st June 2008 05:40 AM

do amps have parasitic load on car batteries?
I got nice Hifonic brutus 1200d amps in my car and after I leave the car to sit for a week battery dies. But when I disconect the amp from the battery I can leave the car sit two weeks and it would not drain. I did the parasitic load test and seems to me that amps draws some juice at first second of connecting it to charge the capacitors but then it stops. So I don't know about this, any opinions?

Speeed3 21st June 2008 06:39 AM

Firts make sure, that amp isn't on. One strain of power cable touch a remoteterminal etc.

Amps shouldn't draw current if there of, but I have seen amp, that was broken, but produced sound. And it drawed current when it was of. Half of power supply was gone.

luka 21st June 2008 07:03 AM


If you think it is problem in it possible that your battery isn't charged fully? Amp should, I think, use <1mA I think, since everything inside has at that point M ohme resistence, even clock will draw more current. I had similar problem, my battery was not charged at all, music would play, but motor could do only one or two turns, after using car next day for say 2h, I didn't use music, I charged battery fully! Before this I had only 13.8v with engine on, now it is 14.4v or something like that

mandude 22nd June 2008 01:35 AM

Yeah, the amp *shouldn't* be drawing any current, at all.

Keep in mind, you live in Phoenix (looks like), and car batteries and the heat don't get along too well.

All times are GMT. The time now is 06:57 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2