What was found
EMERGENCY BATTERY FAILED TO MAINTAIN LIGHTS ON FOR REQUISIT TIME , LIGHTS AFFECTED OUTSIDE LH AFT SLIDE LIGHT, AFT EXIT DOOR, INSIDE ROW 22 THRU 38 AND AFT DOORS (REF. AAR NR 99999932). REMOVED AND REPLACED BATTERY PACK M1673 IAW B737 AMM 33-51-06-96 0-802, OPS CHECK GOOD (SDR NO. 1035135)(WORK ACCOMPLISHED BY V93 4137 AND AAR QC A-16 V931820).