Damn...car battery is dead!

**WuNgUn** · 12-02-2008, 12:38 PM

Originally Posted by rijk

But this is without the fuse (to the amps) you pulled.
Your remote should be powerd to a switched 12 volt, if it is not connected to anyting they won't go on at all.

PSU...daisy chained together. Could you "translate" I think it says:
the psu and the amps are on the same 12+ wire, or is it an englisch frase.

Is the battery still drained after pulling the cpc from the car?
It is true, an older battery if realy deeply discharged can die. But yous was 2 years so it should't, it wil have sufferd from the total drain.

Correct...the amp remote on is not connected to anything...yet the battery drained.
The remote on for the amp is controlled by the PC power supply. It leads into one amp, then from that amp, into the next, then into the next...

**rijk** · 12-02-2008, 01:29 PM

Originally Posted by WuNgUn

Correct...the amp remote on is not connected to anything...yet the battery drained.
The remote on for the amp is controlled by the PC power supply. It leads into one amp, then from that amp, into the next, then into the next...

You use the remote wire of the m2, or a 12+ from a molex.
With mine the remote was to weak. It's best to use a relay on the remote and than a switched 12+.

I am not sure (its a guess), but if you use a molex it could be that some of the 12 volt of the amp flows back into the switched off m2.

I had it with a powerd usb hub, with the mobo off, the 5 volt of the standby went into the devices that sould not work (my screen moved in a jurky way while it shouldn't have been able to move at all).

**WuNgUn** · 12-02-2008, 03:23 PM

Originally Posted by rijk

You use the remote wire of the m2, or a 12+ from a molex.
With mine the remote was to weak. It's best to use a relay on the remote and than a switched 12+.

I am not sure (its a guess), but if you use a molex it could be that some of the 12 volt of the amp flows back into the switched off m2.

I had it with a powerd usb hub, with the mobo off, the 5 volt of the standby went into the devices that sould not work (my screen moved in a jurky way while it shouldn't have been able to move at all).

No, that's not it...
The only other thing (that I know of) drawing current is the alarm, but it's a small draw, as far as I know...

**rijk** · 12-02-2008, 03:56 PM

Originally Posted by WuNgUn

No, that's not it...
The only other thing (that I know of) drawing current is the alarm, but it's a small draw, as far as I know...

That can't bee it, unless you installed it in the week before the battery problem. Te dsx caused my battery to go realy weak, the only thing that still worked was the alarm making strange noises. The voltmeter of the car didn't even move (6 volts is the min on that scale). Had to hook it up for 5 minutes to another car before it started.

Onely thing to do, disconnect everything and hook it up one by one if the charge drops in halve a day you found the problem. End have someone with jumercables ready just in case.

**WuNgUn** · 12-03-2008, 10:27 AM

Well, I charged the battery overnight at 6A (auto charger)...The charge read 'Charged' this morning, so I unplugged it and put a meter on it...
12.5V
So I start up the car, no problem...recheck the battery with the engine at idle...
13.8V...so the car is charging it.
But I'm wondering if it's not up to capacity, if something is damaged internally maybe?

While I'm under the hood, I put the meter on 'Load' and check the 4 and 8 AWG amp leads off the battery (no fuses), and the meter isn't reading anything...

I check the M2 across the fuse terminal...nothing...

I'm baffled!

**2k1Toaster** · 12-03-2008, 12:29 PM

Originally Posted by WuNgUn

Well, I charged the battery overnight at 6A (auto charger)...The charge read 'Charged' this morning, so I unplugged it and put a meter on it...
12.5V
So I start up the car, no problem...recheck the battery with the engine at idle...
13.8V...so the car is charging it.
But I'm wondering if it's not up to capacity, if something is damaged internally maybe?

While I'm under the hood, I put the meter on 'Load' and check the 4 and 8 AWG amp leads off the battery (no fuses), and the meter isn't reading anything...

I check the M2 across the fuse terminal...nothing...

I'm baffled!

If you are trying to measure current, be careful. You can blow your meter if it isnt rated for the amps.

Also you know that current is measured in series while voltage is measured in parallel right? So to measure the load on your devices, you connect the battery (+) to meter to device to battery (ground)

**WuNgUn** · 12-03-2008, 01:29 PM

I jammed one end of the meter to one end of the fuse terminal, and the other end of the meter to the other side of the fuse terminal...correct?

**2k1Toaster** · 12-03-2008, 01:45 PM

Originally Posted by WuNgUn

I jammed one end of the meter to one end of the fuse terminal, and the other end of the meter to the other side of the fuse terminal...correct?

No. That is parallel. Only for votage.

**WuNgUn** · 12-03-2008, 01:55 PM

Originally Posted by 2k1Toaster

No. That is parallel. Only for votage.

I mean without the fuse in place...that is series. Besides, even with a fuse in place, I'm not going to be able to read the voltage,
as the fuse doesn't bridge the + and -

Anyhow, I couldn't detect any current going to the amps.
And I measured the M2 the same way, by pulling the fuse and metering across the terminals...
Nothing sensed there either.

Probably the M2 didn't shutdown properly or something when I had the battery drain.
Considering the junk Mini-box makes, I wouldn't be surprised if that were the case.

After giving it n automatic charge over night, it been fine since...however, I still have all the fuses yanked, so....

**timothyr1014** · 12-06-2008, 11:12 AM

Just to point in a sslightly different direction....what type of car? Reason I ask is in mine (cadillac SLS) I started experiencing random battery discharge if the car sat for more than 24 hours. I could not find anything pulling load, so I took the angle of unplugging everything that was installed aftermarket. No change; car sits for 30+ hours and would not start. Then one day when the battery was dead I noticed something a little off...the back end of the car was sitting SLIGHTLY lower than normal, and my lightbulb went on. I recharged the battery, and slid my floor jack under with just enough lift to bear the weight. battery stayed charged for a week+. Turns out to be the compressor for the rear air load-leveling randomly cycles when the ignition is off, and the equipment in my trunk (140 lbs) weighs enough to make it want to cycle every few hours.

seeing as parking with a floor jack under my car would probably lead to my wheels being stolen, I used a realy to make the suspension circuit switched by ignition rather than constant. but that at least explained the part that baffeled me...how is the battery draining when there is no dteectable load; because the load happens at random.