As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: DURING EMERGENCY EXIT LIGHT TEST, MAINTEANCE FOUND EMERGENCY EXIT LEFT HAND EMERGENCY POWER SUPPLY UNIT BATTERY WITH LOW CHARGE. MAINTENANCE REPLACED BATTERY AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 33-51-38.