What was found
PREFLIGHT - PORTION/ALL OF CABIN EMERGENCY LIGHTING IS INOP. HERE ARE ALL THE CONDITIONS: APU OFF -EMER LTS SWITCH IN ON (MAIN BATTERIES OFF) - ALL EMER LIGHTS FUNCTION EXCEPT THE 3 EXIT SIGNS AROUND MED AND GALLEY READ LIGHT (BULB IS GOOD) -EMER LTS SWITCH IN ARM (MAIN BATTERIES ON, PASS SAFETY ON) - NO LIGHTS AT ALL APU ON -EMER LTS SWITCH IN ON - ALL EMER LIGHTS ARE ON EXCEPT THE 3 EXIT SIGNS AROUND MED AND GALLEY READ LIGHT (BULB IS GOOD) -EMER LTS SWITCH IN ARM (PASS SAFETY ON) - NO LIGHTS AT ALL. REMOVED EMERGENCY LIGHT BATTERY #1 DUE TO LIGHT NOT HOLDING CHARGE AND INSTALLED A REPAIRED EMERGENCY LIGHT BATTERY. ALLOWED BATTERY TO CHARGE FOR 2 HOURS. PERFORMED OPS CHECKS. OPS CHECKS SATISFACTORY. DISCREPANCY NO LONGER STANDS. WORK PERFORMED IRW AMM 33-50-10.