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› How much power supply current when charging 6S at​6 Amps?
08-07-2007 05:22 PM  10 years agoPost 1
alwallash

rrApprentice

Morgan Hill, CA​(near San Jose)

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Hi,
Just got a TREX600.
I was wondering what the DC voltage supply current would be if I am charging a 6 cell battery at 6amps?

Power = VI.
So ~23V at 6Amp = 138Watts.

So 138 watts at 13.6V = 10Amps.

So to charge two batteries from a single DC power supply at the same time, I would need at least a 20 Amp supply?

Is this right?

Al

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08-07-2007 05:26 PM  10 years agoPost 2
z11355

rrMaster

New England

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you're not accounting for losses so you'd want 23-25A supply

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08-07-2007 05:32 PM  10 years agoPost 3
Two Left Thumbs

rrKey Veteran

Houston, Texas - USA

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20 Amp supply would be the absolute minimum. There are losses in the charger (it warms up), it takes in more than it puts out . I try not to run anything at 100%, so for your setup I would want a 30A supply.

Have fun with that big Trex!

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09-03-2007 01:17 AM  10 years agoPost 4
electricdurango

rrVeteran

Sterling, VA

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Thats interesting. I have a 13AMP surge 10AMP constant power supply made by Pyramid. When using my TP1010 charging 5amps on my TP5000 6S I blow fuses.

When charging at 3.5AMPS, I pop fuses.
When charging at 2.7AMPS, I sometimes pop fuses.

I was thinking about buying a 20AMP constant power supply just to charge at 5Amps. The fuse popping thing is so irratating. I have to wait like 15 mins for the supply to cool down before resuming.

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09-03-2007 02:37 AM  10 years agoPost 5
Two Left Thumbs

rrKey Veteran

Houston, Texas - USA

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Your power supply has to produce over 9 Amps, to charge your battery at 5 Amps. That is because the pack voltage is higher than the supply voltage.

I can see how you are blowing fuses charging the pack at 5A, but it should be OK for 3.5A. The 20A supply sounds like a good purchase.

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09-03-2007 06:38 AM  10 years agoPost 6
HHawk

rrVeteran

Gardnerville Nv.

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The Pyramid Power supply Im useing never reads above 12 amps when chargeing with TP1010 at 5 amps.

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