Power Supply Question
 

Im a complete noob when it comes to voltage questions.

What I'm trying to accomplish is only having one power supply for 2 chargers. I am using these chargers
http://www.hobbyking.com/hobbyking/s...dProduct=15164

I want to be able to charge at least (1) 4s at 5a. Is there anything out there around the $50 mark that will be what I am looking for?

yes, I think that power supply can supply the two chargers that you have to charge 4S batteries on each.

25Amp power supply should have enough juice to power the two chargers...

You only want to run one charger at a time or both? Those are 80watt chargers so to run one at full power it'd take ~100watt power supply(chargers are typically assumed to be 80% efficient). To run both, you'd need ~225watt power supply.


Here's one that will do either and its $70 -

http://www.progressiverc.com/index.p...er-supply.html


Here's a PS that would run just one charger at a time -

http://www.amainhobbies.com/product_...-138V-10A-130W


And a word about your wanting to charge a 4S at 5amps - that requires 84watts (16.8v x 5a = 84watts). Your charger is only 80watts, it will get close to 5amps, but as the voltage of the charging lipo gets to 16.8v, it'll only be charging at a little over 4.7amps.

Checkout the following tutorial about using an HP server power supply for RC use. Very simple and cheap. You can get the power supply on ebay for $20 or less shipped.

HP 47amp 12v PS tutorial:

http://sites.google.com/site/tjinguy...projects/HP47A

I found this one, but doesnt give to many specs for me to reference to your post. Will this be close to what I am looking for?

http://www.hhvastore.com/index.php?productID=51611


Thanks for that explaniation.

Thanks Ill check it out

Awesome PS for the size and price, I cant justify a 10lb 20Amp+ brick when traveling.

http://www.amainhobbies.com/product_...n-Power-Supply