As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS AT L1 DOOR DO NOT STAY 'ON' FOR MORE THAN TEN SECONDS WHEN SWITCH IS SELECTED TO ON POSITION.<[01] PERFORMED TROUBLESHOOTING OF EMERGENCY LIGHTS L1 AS PER B737 SSM 33-51-12; FOUND BATTERY PACK M1675 DEFECTIVE. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK AT POS M01675 AND PERFORMED INSTALLATION TEST AS PER B737 AMM TASK 33-51-06-960-805. TEST PASS.;[02] VERIFIED STEP 1