Air conditioning stopped working an battery light came on

Check your charging system, when batterry goes down its automatically shut off your a/c system, alternator and circuit must check

With regards to battery lite have the belts/ belt checked out as well as battery and charging system . I figure that possibly the belt is loose and is causing the alternator to effect battery charging which could cause a/c not to work.( belt slipping on a/c compressor.)
If this is not the case have the charging system checked out any way.
Now your into surgery with the a/c. Let me know how battery problem turns out first before we go into a/c surgery.