Congrats on finally getting things up and running!
Double check to make sure the Secondary Output is not jumpered for "always on" (JP3) operation. Also make sure the Secondary Output Control (JP4) is set for DLYON. If it is set for PRI OUT (which means the Secondary Output is ON when the Primary Output is ON, and since you are using Standby (sleep) the Primary Output never turns off!), your Secondary Output will never turn off. If your 8" Xenarc draws any current when it is off, it will be sucking it from the P1900 and draining your battery.Quote:
I also have my Xenarc 8" screen connected to the secondary output (set to 12v) on the P1900.
How are you powering your USB hub? Do you have a P5V or are you directly connecting the hub to the mini? I would suggest you use the P5V and let it disable power to the USB hub when your system goes to sleep. Some USB hubs can draw significant current even with nothing connected. If you have a GPS mouse connected, that's another ~100mA. If you're not careful you'll be drawing 300-400mA total while in sleep. If you've been subjecting your battery to this slow drain for while (with your previous system) it may already be degraded and not able to be fully recharged.Quote:
One thing I have noticed is that the USB bus stays on even when the Mini is sleeping.
Do you have a digital voltmeter? Can you measure the battery voltage in the morning before you crank your engine? The P1900 will cut power to the mini if, while in Sleep mode, the battery drops below 10.5V. However, as soon as you turn on your ignition, the P1900 goes into startup mode and ignores the battery voltage since it will dip during engine cranking.Quote:
Is there a way to check to see if my P1900 properly cuts off power if the voltage drops too low (I don't have a variable voltage power supply)?