What was found
DURING FLIGHT, EMER LIGHTS FLICKERED A FEW TIMES & THEN STAYED ON CONTINUOUSLY FOR THE REST OF FLIGHT WITH THE SWITCH IN THE ARM POSITION. PERFORMED EMERGENCY LIGHTS BATTERY TOP CHARGE, PUT EMERGENCY LIGHTS SWITCH TO ON, LEFT ON FOR 30 MINS, PUT SWITCH IN ARM TO CHARGE BATTERIES AFTER ABOUT 25 MINS. THEY BEGAN FLASHING. REMOVED EMERGENCY BATTERY NR 1 & REPLACED WITH SUPPLIED REPAIRED BATTERY. REMOVED FAULTY EMERGENCY BATTERY NR 2 WITH SUPPLIED REPAIRED BATTERY. OPS CHECK GOOD WITH NO DEFECTS NOTED. WORK DONE IAW TC TC-505-33-200403, AND AMM 33-52-01.