Originally Posted by Duster_360

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.

Originally Posted by kcobra

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