50+ AMP Power Supplies - RC Groups
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Aug 18, 2004, 09:21 PM
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Jeff Meyers's Avatar

50+ AMP Power Supplies

Hey guys,

One of my club fields has AC Power.....but I'm killing my 25 amp Radio Shack power supply.

When charging two 8S3P packs at 6 amps each....I'm exceeding the current capabilities. I will soon need to charge 10S packs at 6 amps each....plus some smaller packs at the same time...

Anyone have a good suggestion for an easily portable 50 amp power supply? I need something that's less than 10 lbs ....smaller the footprint the better...
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Aug 18, 2004, 10:34 PM
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Andy W's Avatar
I would suggest two of the 25A units, one per charger. That's what I have (although I rarely push my chargers as hard as you are). It will be FAR cheaper and smaller than a 50A PSU..
Aug 18, 2004, 10:45 PM
Registered User
If money is not an issue, go to www.trcelectronics.com and look at the Cosel 600 (or higher) watt PBA series power supplies. These are small, powerful switching supplies. I use the PBA600F-12 supply to charge 5S3P LiPos with two Astro 109 chargers.

Mike M
Aug 18, 2004, 10:46 PM
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Jeff Meyers's Avatar
Yeah...that's an option....but not as convenient as carrying one unit to the field with one bus bar...
Aug 19, 2004, 12:31 AM
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Hi Jeff,

I've had some good success using 2 of these pc power supplies http://www.newegg.com/app/ViewProduc...148-007&depa=0
in parallel, they are 34a on the +12 volt side ( 2 in parallel should be good for 68a). I'm just charging 3s3p 6000mah but it kept tripping off my charger and I would have to start my car at the field to charge. Its cheap and light and has its own cooling fan built in.

Aug 20, 2004, 06:41 PM
Registered User
You can try an IOTA power supply. I have an 55a and a 90a continuous 12 power supply. Great units and very light. You could charge 3 complete ION packs with the 90a unit.

Aug 20, 2004, 07:03 PM
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Jeff Meyers's Avatar

Got a link?
Aug 21, 2004, 10:11 AM
Registered User
Jeff, get a real 13.8V power supply:


Are you looking for a switcher or linear supply? If you can deal with the weight of linear supply look no further than Astron. The Astron will last a lifetime.
Here are some reviews the eHam.com

Aug 21, 2004, 10:16 AM
EDF Head
Haldor's Avatar
Search google for MAAS/Manson SPS9600 (60A unit)
Lightweight (5.8kg/14pounds)

I got its littlebrother SPS9400 (variable 3..15V/stabilized 13.8V/40A max) which can be had for 160-200Euro.
Weight is 7pounds.

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