ORIGINAL: bgosselin
[EDIT] Now that I re-read it Red, you probably thought he had four 10 ohm resistors...
Even though he stated that his resistors were 1 ohm, it's possible that he intended to write 10 ohms. At 4s, I would think that a 4 ohm load would have been sufficient to hold his 12v rail above 11.5v when attached to his charger; 40 ohms would likely not be enough to prevent sagging out.
Perhaps we can get a clarification on the actual resistance.