Originally posted by dtm
Many moons ago I used to use a computer power supply. Check on the case most will run 12V @5A. Just don't go over the rating. I used mine for almost a year before I upgraded. No major problems except that it would occasionaly switch off by itself...probably the overload protection. They are a cheap alternative.
Cheap alternative if you haven't got anything better.
But if you're investing in such a good charger.. think twice about what kind of power you're feeding it. The Mill Pro expects to get a clean and stable DC voltage coming in, otherwise its peak detection will be off track.
MillPro also needs a DC input approx 1.5-2.0V *above* the peak voltage of your cells. If your cells are older and peak at 10.5-11V, you need a supply that can pump 13.8V and be voltage stable, otherwise you'll get heaps of headache with false-peaking.
(The PC PSU seems to barely even reach 12V under load!?)
You will also not be able to charge 7 & 8c packs @ 12V alone.