Bumping this with a question..
I've been looking into the ProTek Prodigy 620 Duo and it states that input voltage is from 12-18v, but 15+ is recommended when charging at 20a. I was planning on getting a converted 40a+ server power supply as a power source for the charger. However, I know that PSUs supply 12v power.
Now, I don't plan on charging at 20a per port all the time ( probably very seldomly). I plan on charging around 12-15a most of the time. Do I still need to look into getting a 15-18v PSU or would the server PSU be ok?