Building a power supply.
 

Hello people i am looking for some help. I am going to try and make a power supply to run a charger i want to get. the model number of the power supply i found laying around is dps 300pb-3c rev. I am looking to get either http://www.hobbypartz.com/73p-t6x4-charger.html or http://www.hobbypartz.com/75p-t6-multi-charger.html for a charger. Basically will the one i found laying around work or should i be looking for something differnt?