Well the battery died.

**guizai** · 05-21-2007, 03:21 PM

I've got a M2 and it works perfectly other than the fact that my battery died this weekend.

I have a kill switch from the power line to the M2. I typically turn this off when I get out so I completely cut off the power to the system. Unfortunately I lent the car to the gf and she left it on. Well it drained the battery in a day.

I haven't gotten out the voltmeter to see what's pulling all the power but I did notice that with the system off that I have a few USB things with lights still on.

My Bu353 still flashes with the computer off as well as my sensor for the wireless keyboard.

I don't like the fact that I have to wait for the system to completely hibernate before flipping the kill switch but I also don't like having to worry about the system draining everything if I leave it connected.

GPS receiver is connected to a USB port that's connected to the motherboard
Keyboard receiver is plugged into the serial keyboard and mouse ports.

Suggestions?

**ThunderStick** · 05-22-2007, 12:22 AM

Get rid of the M2ATX, there junk. Pick up a good opus psu that cuts the power to the 5v rail when computer is turned off.
I really doubt that one USB device would drain your battery over night. Most people leave there USB recievers powered so they dont have to wait for a lock everytime they shutdown. Anway, I guess what I am saying is I would suspect a bad battery or something not up to par in your charging system.
In my last car I did, the alternator was way underpowered. It was only a 40amp alternator. Yes that is right, it was an old car and had just enough to power the car and the head lights. Anyway long story short, I add a carputer and every other day my battery was dead. I replaced the alternator with a 110 amp and voila problem solved. My computer was pulling about 15 amps alone, so you can imagine only having about 25amps to power my car was not nearly enough.
I hope this helps and good luck with your install