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Electric Battery-Charger-pSupply
› DIY charging power supply
02-14-2011 10:06 PM  6 years agoPost 1
mikmerl

rrApprentice

Athens, Greece

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When I started flying 12 cell LiPo helicopters (2x 6cell) I realized that I needed a more serious 12V DC power supply. I had a quick look at what was commercially available to us modelers and decided to put something together myself.

I am sure a lot of fellows will chime in and say “I am using XYZ product with great results” or “why didn’t you do it like ………” and I am sure they will be absolutely correct.

This is simply the way I approached this need and have had good results with it. I hope that it may be an incentive for somebody to try his own construction.

The photos I believe are self explanatory.

mike

Vario Bell 47g II, Vario EC135, Vario BO 105 big, Vario Benzin trainer, Logo 600SE, Logo 550

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02-14-2011 11:42 PM  6 years agoPost 2
kcordell

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O Fallon, MO

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Nice job!

Team Futaba, Team Synergy/Rail, Team Scorpion, Team Castle Creations, YS Engines, VelTye

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02-15-2011 01:33 AM  6 years agoPost 3
jphilli

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Atlanta, Ga.

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Looks good! One question though, are you only using your 610c's? Reason being is that 4 of them would pull 320 watts max but you have 720 watts of power supply. Seems like you could get by with just using one of them.

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02-15-2011 01:29 PM  6 years agoPost 4
mikmerl

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Athens, Greece

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Pjhilli, your statement is correct in that I could have gotten away with one unit. However occasionally I hook up more chargers to enable concurrent charging of other batteries as well.

I wanted to be sure that this equipment could be of good service to me for the foreseeable future, our modeling requirements keep getting more and more power hungry. The power supplies that I purchased 1.5 to 2 years ago seem puny now, back then I thought that 15Amps would see me through.

Who knows possibly in a year or two this featured unit may seem equally inadequate.

mike

Vario Bell 47g II, Vario EC135, Vario BO 105 big, Vario Benzin trainer, Logo 600SE, Logo 550

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02-15-2011 04:34 PM  6 years agoPost 5
jphilli

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Atlanta, Ga.

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Solid point. Planning for the future is always a good thing.

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02-15-2011 05:30 PM  6 years agoPost 6
Rogman88

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West Monroe, LA

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Another point is that if those power supplies are rigged in series at 24V, they will acutally allow certain chargers run more efficient and gain added watts. For example, my 350 watt Icharger 208B will not give me the full 350 watts unless it's on a 24V input. It's more like 330 or so. No big deal but I'm a big fan of having it when you need it!

High Voltage just works better

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02-15-2011 08:05 PM  6 years agoPost 7
kcordell

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O Fallon, MO

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That's what I did with mine, a 24V tap and a 12V tap, 57amps, 700 watts total available. There are a few chargers that won't accept 24V.

Team Futaba, Team Synergy/Rail, Team Scorpion, Team Castle Creations, YS Engines, VelTye

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02-15-2011 08:18 PM  6 years agoPost 8
mikmerl

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Athens, Greece

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Rogerman I have them operating independently of each other, they share the box, the mains input and the cooling fan their 12V outputs are not connected in series as my chargers specs are

Quote
"Input Power: 11-16V DC/10Amp at maximum charge rate:
Unquote

So I was worried about pumping 24Volts into them.
All that I did in that direction was to adjust the output trimmers to their max which gives around 14-15V each.

Vario Bell 47g II, Vario EC135, Vario BO 105 big, Vario Benzin trainer, Logo 600SE, Logo 550

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02-17-2011 06:24 PM  6 years agoPost 9
Rogman88

rrElite Veteran

West Monroe, LA

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Sounds like you've got a great setup! Enjoy! I'm rigging up a 575W Hp power supply up right now. I was going to do a big series setup but decided I'm going to just use one at 12.6v till I actually need more power. Right now I can charge a pair of 6S 3000mah batteries at 3C at around 20 minutes. Perfect for me at the moment.

High Voltage just works better

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