What was found
DURING PRECHECK OF EMERGENCY LIGHT SYSTEM FOR EOR33017, FOUND OVERWING EXIT LIGHTS INOP ON LH AND RH FWD AND AFT SIDE, AND MID WING FWD AND AFT EMERGENCY LIGHTS INOP. FOUND BOTH BATTERIES AND CHARGERS INOP IN POSITIONS PS37 AND PS43. REMOVED AND REPLACED BATTERIES IAW JOB CARD 33-900-701. PN'S ON/OFF 2013-1ASMI. PS37 SN ON 17900, SN OFF 16491, PS43 SN ON 17899, SN OFF 16916. REMOVED AND REPLACED BATTERY CHARGER ASSYS IAW 900AMM33-51-17 PN'S ON/OFF 11-0049. PS37 SN ON 22396, SN OFF 28060, PS43 SN ON 26948, SN OFF 16169. PN 11-0049, SN 16169, REMOVED PN 11-0049, SN 22350. OPS CHECK GOOD.