yep im charging one 7cell pack at a time. I peaked two packs twice and my run time was 9mins and i was going flat out the whole time, thats heaps better than 5 mins. the temp after peaking twice was still the same, the temp doesnt really change during charging lol. i've been waiting for the superbrain 977 to come into stock at towerhobbies since i got my emaxx lol, but it still hasnt come into stock.