As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FT # 1525, WITH ALL POWER OFF THE AC MANY OF THE EMERGENCY LIGHTS ARE NOT ILLUMINATED ON BATTERY POWER I TRIED WITH THE OVERHEAD SWITCHES AND THE FAP. R & R LH EPSU BATTERY AND EMERGENCY EXIT RH EMERGENCY LIGHT BATTERY EXIT ROW IAW AMM 33-51-00.