I figured I post this up for you guys that want an affordable 12.5V 47A capable power supply to power your chargers.
The model number is power supply in question is 321632-001,
DPS-600PB HP 575W Power Supply Proliant DL380 G4. All you need to do for the PSU to "Turn on", is short 3 connectors. Basically two hot wires to ground. No load resistor is needed.
When you look at the back of the PSU, you'll find 4 blade plugs. The two on the left are ground and the other two on the right positive. In between the blade plugs, you'll find a set of 12 pin connectors. You'll see a pin that is shorter than the rest, which I call pin 6.
1 2 3
4 5
6<---short pin
7 8 9
10 11 12
Connect 6 and 10 to 8(ground). I believe pin 5 is ground as well. Note that the PSU fan will turn on when you connect it to the AC line. The fan will speed up, once you short the 3 pins together. I opted for plugs to the pins, but you can use a switch instead. You can use servo leads as well.
Solder your power wires to the blade pins and have fun charging.
