At N>=2, when a battery's maintenance charge ended, its watts stayed in the loop's start point and landed on the other battery (B 0 -> -1600 W in one cycle, charging from the grid at a 6000 W house). On the cycle a charge ends, the loop now starts from what the others stood at plus that battery's new command. N=1 and all identity digests unchanged. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>