What was found
L/H EXTERIOR EMERGENCY OVER-WING SLIDE LIGHT INOP. / [01] PERFORMED T/S AS PER B737 SSM 53-51-11 AND SSM 53-51-13; AND FOUND DEFECTIVE BATTERY PACK AT POSITION M1668.;[02] REPLACED BATTERY PACK AT POS. M1668 AND PERFORMED TEST OF THE NEW BATTERY PACK AS PER B737 AMM 33-51-06-960-805. PERFOMED L/H EXTERIOR EMERGENCY OVERWING SLIDE LIGHT OPERATIONAL TEST AS PER B737 AMM 33-51-00-710-801. ALL TEST OK.;[03] VERIFIED STEPS #1 AND #2.