As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:NAEMERG BAT LOW #1 M668020. ITEM TRANSFERED TO DEFERRAL 33-50-4. ACCOMPLISHED DMP 33-50-4. PLACARD INSTALLED OK FOR SVC.REPLACED EMERGENCY POWER SUPPLY BATTERY IAW MM 33-51-01-401. REVERSED DMP 33-50-4, PERFORMED OPS CHK. CHECKED GOOD. THIS CLEARS M668020