What was found
DISCREPANCY: FOUND AFT EMERGENCY LIGHT BATTERY FULLY DISCHARGED AND WOULD NOT TAKE CHARGE WHEN POWER ON. CORRECTIVE ACTION: PERFORMED REPLACEMENT OF EMERGENCY LIGHTS BATTERY RIGHT HAND RACK (AFT) WITH MODIFIED UNIT IN ACCORDANCE WITH PHENOM 300 MAINTENANCE MANUAL 35-52-01. PERFORMED OPERATIONAL TEST OF EMERGENCY LIGHTS IN ACCORDANCE WITH PHENOM 300 MAINTENANCE MANUAL 33-52-00. NO DEFECTS NOTED. THIS REPORT COMPLIES WITH FAA 14 CFR PART 135 OPERATOR'S GMM REQUIREMENTS.