As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
M1669 FAILS CAPACITY CHECK. ; EMERGENCY LIGHT BATTERY PACK M1669 FAILS CAPACITY CHECK. / [01] REMOVED AND REPLACE THE BATTERY CHARGER ASSY AT M1669 PER AMM 33-51-06-960-806 STEP 5 - 5.E(3)(F); [02] VERIFIED REPLACEMENT OF BATTERY CHARGER ASSY PER AMM 33-51-06-960-806; [03] PERFORMED A GOOD TEST OF M1669 PER AMM 33-51-06-960-806 STEP 5. E. (4.); [04] VERIFIED; PERFORMED A GOOD TEST OF M1669 PER AMM 33-51-06-960-806 STEP 5. E. (4.)