AC-DC Power Conversion - RC Groups
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Dec 15, 2004, 04:17 PM
High Speed, Triple Spark!
BigBreeze's Avatar

AC-DC Power Conversion

Does anyone have any pointers for AC-DC power conversion to run DC supplied Lipo chargers at home? I heard PC Power supply works great with a few mods...!! Are these safe? Will they be okay for my new Lipos? What are some of the the stats that I need when looking for a power source?

Anybody else tried something different or easier?

Thanks for the advice,

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Dec 15, 2004, 04:29 PM
Registered User
Big Breeze, maybe I'm interpreting your write up wrong, but you do not use the AC/DC power supply you make from a computer power supply to charge your LiPos, you use it to power a charger that is built to charge LiPos. Most of these chargers will work with any power supply that will provide at least 5 amperes at 12 volts.
Dec 15, 2004, 05:03 PM
High Speed, Triple Spark!
BigBreeze's Avatar
That's what I mean. I would like to know some more advice/tips on converting an old PC AT or ATX power supply in order to power a Lipo Battery Charger. Or get any other ideas on what others are doing. Seems like most of the lower priced Lipo Chargers (Apache 2500, etc) are 12V DC only. This is okay, but I usually charge batteries at home and don't really want to go out and buy a Gel Cell or motorcycle battery.
Dec 15, 2004, 05:16 PM
SCAT-R-D's Avatar
Big Breeze,
Do a search on Cosel power supply or PC power supply and you will have more info than you know what to do with!

If you use the pc ps make sure your ps can handle the amp draw.
Check your charger for input current requirements.

Dec 15, 2004, 07:42 PM
Registered User
I monkeyed with the PC supply conversion for awhile then just bought a Cosel from for around $25 shipped. Works great. It looks like they may have sold out though. It was a commercial supply liquidation so there won't be any more. However, I got a lot of hits on ebay for "12V power supply".

Dec 15, 2004, 09:21 PM
Registered User
ebill3's Avatar
Several folks (me included) have had great results with modified PC power supplies - some not.
If you want to give it a shot, check out:

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