The biNixie Clock deserves a box with an antique look. But the technology inside remains modern, so why not use a rechargeable battery supply?
Without any optimization, at 12 Vdc the biNixie Clock drains 82 mA with two digits ON and 65 mA in stand-by. This means a normal battery pack or 2000 mAh would last between 20 and 30 hours. I have to identify how much current each module drains so that I can plan the power supply and the box size accordingly.
I would like to keep it running off a 3S LiPO pack!