anyone tried using a pc UPS as a robot power supply? I've got an old backUPS pro with a 12v/7aH battery. It's also got a serial port so it can be connected to the atx motherboard i'm using. This way, i can poll it for battery voltage over the serial line. The pc psu will plug right into it, though i expect i'll lose some efficiency with the dc/ac/dc conversion. The motors/oopic sub-controller board might be able to run off of a second (or the same) psu wired onto its +12v/+5v rail. It'll also be able to charge the battery automatically and without having to shut down the mobo when the bot reaches its charging station. Comments?
Also, would it be possible to just swap the ups' 7aH battery with a say 12aH one without any other modifications to the unit?
Thanks for your time, Will