30W

.... i don't know why they even allow the user to select that option! it is already very hot at 20W.
I set mine to 25w, and have only used the discharge option for ~30 mins at a time..
That is in a cold room during the winter tho..
What you will want to use as a discharger is 2x 50W halogens hooked up in series..
Or even faster, 2 in parallel, 2 in series.
On 10S, 2S1P will give you about a 3.8A draw constant.. many times more faster than the iCharger ( or any other balancing charger ). 2S2P will double that obviously.. Use this + monitor mode on the iCharger to graph out your cells on discharge.. no, it won't count mAH, but you can count that while charging up...
So here's the pep talk about the iChargers since you are prolly not too happy about it right now

they are the only chargers that can be calibrated and come in good calibration in the first place.
Hyperions can be a little off some times, and there is no way to calibrate them, AFAIK.
Not sure if you browsed through the manual or not, but they do basically everything....
Avoid the discharge+ mode when you get yours back.
Also, this is worth a read:
http://endless-sphere.com/forums/viewtopic.php?f=14&t=24801
Good luck with the hobbyking deal.
kudos said:
Nope I was just using the standard discharge on a nano tech 10s.
I am a LiPo noob mind you. First time using the charger to discharge.
I had discharged for about an hour from 4.15v down to 4.1v
I had no idea it would take so long, so I stopped the discharge, changed the watt limit setting from the default 20w up to the max 30w to increase the discharge current to speed it up a bit.
30seconds later there's a popping sound and it no longer charges/discharges. Connection breakdown error.
Still reads the balance voltage fine.
I'm going to send it back to HK, but that does leave me without a charger.....
Kudos