Wiktionary
maxed-out
a. 1 Having reached the limits of one's (or something's) capability 2 Having reached a maximum value
Usage examples of "maxed-out".
Just to show the Americans he hadn't been fooled, he maxed-out his power, flipped briefly to fire-control mode, and zapped all four of the American fighters hard enough that if their electronic systems were not properly shielded, the incoming radar signals would burn some of them out.
After that, the human experiment was doomed, first to gigantism due to a maxed-out food supply, and then to extinction, once all the available nutrients had been hoovered up.