As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING EMERGENCY LIGHT TEST, RECEIVED AN EMERGENCY LIGHT BATTERY 1 LOW. TROUBLESHOOTING IS REQUIRED PRIOR TO INSTALLING PARTS. R & R EMERGENCY BATTERY IAW AMM 33-51-01-4 & FUNCTIONED IAW AMM 33-51-01-5. ALL TESTS PASSED. R & R EMERGENCY LIGHTS BATTERY IAW AMM 33-51-01-4 AND TESTED SATISFACTORY IAW AMM 33-51-01-5.