What was found
EMER LIGHTS DID NOT TEST PROPERLY DURING PREFLIGHT TEST. ATTEMPTED RECHARGE IAW CHECKLIST. CHARGED 30 MINS CHECKED AGAIN, DID NOT WORK. CHARGED 30 MORE MINS, CHECKED AGAIN, DID NOT TEST PROPERLY. EMER LIGHTS DO WORK IN ON POSITION. PERFORMED GROUND CHECK OF EMERGENCY LIGHT BATTERY NR 1 PIN B NOTING FLUCTUATION RESISTANCE FROM 3.02-4MQ. ACCESSED BATTERY NR1 GROUND NOTING TERMINAL INSTALLED ON INCORRECT STUD GCDS16 (SHOULD BE INSTALLED ON GCDS12) AND TO BE LOOSE. DISCONNECTED GROUND TERMINAL FROM GROUND STUD AND PERFORMED GVI WITH NO DEFECTS NOTED. REINSTALLED BATTERY NR 1 GROUND TO GCDS12 IAW AMM 33-50-06. PERFORMED WIRING CHECK OF BATTERY NR1 PIN B TO GROUND NOTING 0.22 PRESENT. RECONNECTED BATTERY PACK 1 & PERFORMED CREW EMERGENCY LIGHT TEST NOTING CABIN MED LIGHTS NOW FULLY ILLUMINATED & LIGHTS ARE ILLUMINATING IN THE ARM POSITION. POWERED AIRCRAFT AND PERFORMED EMERGENCY LIGHTING OPS CHECK IAW AMM 33-50-00 WITH NO DEFECTS NOTED. ALLOWED EMERGENCY LIGHTS TO CHARGE FOR AN ADDITIONAL 30 MINUTES AS REQUIRED.