Need Power Supply Suggestions

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08-22-2010 | 06:47 AM

#16

JG!

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From: Longmont, CO

Quote:

Originally Posted by Bermbuster

Keep the calculations simple.....5.2 a x 2 = 10.4 amps....
you want a power supply with greater than 10.2 amp capacity....
12 amps or greater will be fine.

Thanks Bermbuster!

08-22-2010 | 06:51 AM

#17

crusey_aus

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From: Melbourne, Australia

How do you get 130 watts from a 2s pack at 5.2 amps ?

No idea how you are working out your requirements

8.4v (2s lipo fully charged) x 5.2 amps requires 44 watts, allow 20% for inefficiencies makes 53 watts or so

Assuming the charger is capable of producing 53 watts it would require a supply of

53 watts divided by 12v (PS voltage) = 4.4 amps or so

If you wanted to use 2 identical chargers to charge the same size packs you would need at least 8.8 amps

Cheers

08-22-2010 | 07:13 AM

#18

gulio

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Quote:

Originally Posted by crusey_aus

Thanks, yes. I messed up and used 3s packs. It is indeed 88 watts. I edited my post to be accurate. (a cheaper ps is great)

08-22-2010 | 07:14 AM

#19

gulio

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Quote:

Originally Posted by Bermbuster

Keep the calculations simple.....5.2 a x 2 = 10.4 amps....
you want a power supply with greater than 10.2 amp capacity....
12 amps or greater will be fine.

This only works when the input and output are the same voltage.

08-22-2010 | 07:50 AM

#20

mcion

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Quote:

Originally Posted by drive2survive

heres the one I mentioned maybe itll work for ya and maybe it wont 20A 300 W......been charging 4/ 5000 2s at once off of one unit and it works fine, cant go wrong for $30

I use this too. But I only charge receiver and transmitter lipo, and starterbox lead battery.