The fuse is where?
If the battery was charged and the fuse was between the battery and the converter, the lights should have come on from battery power. Hopefully the fuse is between the battery and everything else, including the fuse/distribution center. If not, you may still have a problem.
Assuming all is really OK, congratulations! As I have said before in similar situations myself, I'd rather be lucky than good, anytime.
"You cannot reason someone out of a position they have not been reasoned into"
Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
2001 Safari 25 RB Twin (Gone, but not forgotten)
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
WBCCI 1322, TAC FL-39, AIR 82265