An MD81 aircraft overwing emergency battery pack was replaced with (2) ea incorrect batteries.

Attributes
ACN	736316
Time
Date	200701
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	MD-81
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	736316
Events
Anomaly	maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : far non adherence : published procedure
Independent Detector	other other : 1
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Aircraft Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

Replaced battery X 2 each instead of battery Y in overwing emergency battery pack.

Original NASA ASRS Text

Title: AN MD81 ACFT OVERWING EMERGENCY BATTERY PACK WAS REPLACED WITH (2) EA INCORRECT BATTERIES.

Narrative: REPLACED BATTERY X 2 EACH INSTEAD OF BATTERY Y IN OVERWING EMER BATTERY PACK.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.