Can amps etc drain battery power when not on?

finkle636 · Post by **finkle636** » Sat Nov 08, 2008 12:51 pm

any ideas?

Do they drain there caps on a cycle or anyhing?

Post by **bdubs767** » Sat Nov 08, 2008 1:13 pm

maka78 · Post by **maka78** » Sat Nov 08, 2008 5:16 pm

yes only if there's an internal short in the amps. The best way to test this is to check the amperage going from your battery to the amps when the amps are off. If there's a fairly large amount of amps (like 5 amps would be a large amount if they're off), then there's an internal short somewhere in one of the amps.

fordtough1 · Post by **fordtough1** » Sat Nov 08, 2008 6:59 pm

maka78 wrote:yes only if there's an internal short in the amps. The best way to test this is to check the amperage going from your battery to the amps when the amps are off. If there's a fairly large amount of amps (like 5 amps would be a large amount if they're off), then there's an internal short somewhere in one of the amps.

To be honest .5 amps would be a fairly large amount if they are off. On a modern car the acceptable battery drain is .05 amps. I would be ok with up to .1 amps, but anything more than that is going to drain the battery after a couple of days of sitting. A drain as big as 5 amps will drain it overnight.

rolandk · Post by **rolandk** » Mon Nov 10, 2008 4:43 pm

An amplifier with B+/B- connected and no voltage on the Remote will still draw a tiny bit of current to power the muting circuit, but not enough to drain the battery.

finkle636 · Post by **finkle636** » Mon Nov 10, 2008 5:30 pm

So when the car is started, is the alternator providing the power for the amps to use or does the battery still have some input?

bretti_kivi · Post by **bretti_kivi** » Mon Nov 10, 2008 11:11 pm

when the car motor is running, the battery should be being charged by the alternator, so it doesn't matter.

Bret

Post by **stipud** » Tue Nov 11, 2008 6:47 am

Everything runs off the alternator, until you exceed it's available current. Let's say your alt is rated 60 amps at idle, and you are swinging 100 amps through your amplifiers. In this case, it will begin to draw from your battery, which is why we see a voltage drop and often get headlight flashing

PaulD · Post by **PaulD** » Sat Nov 15, 2008 4:10 pm

If your amp is bolted/srewed straight to the chassis, some will actually stay on - even if the stereo is off.

Post by **kg1961** » Sat Nov 15, 2008 8:14 pm

anyone pics ?????????? but no, yes your right tom!!!

Can amps etc drain battery power when not on?

Can amps etc drain battery power when not on?

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