What was found
AIRCRAFT IN BASE MAINTENANCE: QTY 6 EMERGENCY LIGHT BATTERY PACKS MISSING. REPLACED BATTERY PACKS WITH NEW (AALA202201312870, AALA202201319505, AALA202201311085, AALA202201313301, AALA202201314061) IAW B737-NG AMM 33-51-06, OPS CHECK GOOD.