RE: Help me convert this power supply
A 10 ohm resistor will load the 5V line to half its maximum of 1 amp. The PS only is capable of 100 watts on the 12 (13)V side. THis might do it but you might need a higher resistor (20 ohm?) on the +5 to prevent overload and you will not be able to power more than a fairly conservative charging application. I would try to get a PS that is more than 125 watts. Keep in mind that this represents MAXIMUM output and may not be suitable for sustained operation at that level.
Marginal, at best.
Ross