How to build a $20 47A power supply

[Nard Cox]

The three victims:



Opening it up:



The noisemaker:


Possible solution?




I tested the PSU's shortly with my EOS0615i Duo2. When charging a 4S 5A pack with 5A/1C the voltage is at ~12.35, when I put it at 10A/2C the voltage drops down to ~12.17v and I will only charge at ~9.75A, any ideas? I saw snellemin's stay at 12.8v @ 25.4A:

Originally Posted by snellemin

Naah, I haven't bothered opening it up. I wanted something simple and cheap. A regular ATX is too much work compared to this PSU. I will ask at work if boosting the voltage is even feasible with this PSU. I have no schematic of what the other pins do. I was pulling 25A last nite out of the PSU and the charger stated 12.8V@25A. When I get a few more, I'll open one up.