Thread: UPS managed shutdown

Someone in another forum mentioned needing a UPS for a car-puter (using Standby instead of actually shutting down), and it got me thinking.

I've never taken one apart, but it seems like you could remove the AC-DC conversion part, and run your vehicle's power right into the UPS battery (if the voltages matched up). You might even be able to remove the DC-AC converter and the AC power supply in the PC and keep it all DC... But yeah, it seems like a UPS would be a simple way of getting around a lot of power problems...

Is it even possible for a machine to go from suspend to hibernate?

I assumed you were thinking of first suspending the machine, then when the battery gets to 98%, tell it to hibernate. If you were not, well a PC running without being suspended will drain the battery *completely* in 2 or 3 hours.

Yes I know this. In your original post you said you would use the UPS to set the machine to hibernate when the battery is at 98%. Do you mean then, that you would leave your computer on at all times, running at full power, and then presumably when the battery decreases to 98%, suddenly go into hibernate?

This would seem silly, as the longest you'll be able to have the machine "on" is at most 1 hour before it gets put into hibernate. If you were looking for a way to leave the machine 'on' so that you would not have to wait for it to boot, suspend to ram might be a better option for you, and you could leave the machine in that state for days with only a 5-10 second boot each time.

Oooh...well in that case u should just order one of Jeffy's shutdown controllers.

Remember, in Jeff's shutdown controller, you have wires from the battery, as well as the ignition wire connecting to it. So if the ignition wire is cold, the battery still supplies it with power.