How to build a $20 47A power supply - RC-Monster Forums

SunnyHouTX · 12:05 AM

I don't know why I took this long to do this but I finally got me a 47A PS off the bay for a few cents under $18 shipped. It's going to replace my 26A ATX PS which still works and I will use for truing tires and such at home and as a backup. I was blown away by how small the server PS compared to the ATX PS and I really like the form factor as it makes it easier to carry it and my other CellPro 4S chargers to the track in one Pelican case on race day. It registered 12.58V with no load after I cranked it up.

Thanks to Snellemin and others who've contributed to this thread. Now I wait for my PL8 to show up so I can start working on my LiPos for the 2011 race season. Looking forward to the first ever 1.1s ET on 3S in 1/10 electric TF drag racing.

kazuaki · 01:45 AM

So, here's my "Charging Box" that I recently completed. I used the HP 47A server power supply and cranked it up to output 13.4V. While I was tweaking inside the power supply, I rewired the fan to run off the 5V output, so it's much quieter. So far, it still stays plenty cool. I put it into a modified Plano tackle box with a pair of iCharger 206B chargers (capable of charging at 20A each). I added a socket on the outside of the box for a detachable power cord. I had previously modified the power supply with a toggle switch, so that powers the whole thing up. There is a ton of space for all the miscellaneous charge leads and balance adapters. And finally I added an LED volt meter because I thought it looked cool

So far, I'm really liking this setup.

ANGRY-ALIEN · 02.01.2011, 02:04 AM

very cool... well done on that installation

... been wanting to do something similar with the pair i have... what voltmeter is that? where can i find them?

Alien

kazuaki · 02.01.2011, 04:04 AM

Quote:

Originally Posted by ANGRY-ALIEN

what voltmeter is that? where can i find them?

This is the one that I bought:
http://cgi.ebay.com/ws/eBayISAPI.dll...m=230363049931
There are many out there that would work, but be careful as a lot of them require a 5V power supply.

ANGRY-ALIEN · 02.01.2011, 08:38 AM

Quote:

Originally Posted by kazuaki

This is the one that I bought:
http://cgi.ebay.com/ws/eBayISAPI.dll...m=230363049931
There are many out there that would work, but be careful as a lot of them require a 5V power supply.

Oh.. thanks for the link and advice man... I'll do some searching again for suitable boxes that will fit all my charging/electric field gear and work on the install... will post up some photos when I'm done.

Alien