Specifications

MARATHONNORCO AEROSPACE, INC.
NICKEL-CADMIUM AIRCRAFT BATTERIES
24-34-00
Page 1801
JUL 25/11
18.0 Record Keeping
Associated with good maintenance practices is the keeping of accurate records. These records serve as
a verification of the maintenance procedure and provide information for establishing optimum servicing
schedules in keeping with individual usage of the battery.
Documentation of battery servicing is not only required for warranty consideration, it is vital to the proper
diagnosis of problems. Should a battery malfunction, its complete history will then be available to assist
in the determination of the problem. It must be remembered that a battery is a collection of cells and that
if only battery terminal voltages are observed, the problems with an individual cell may go undetected. A
strong cell will compensate for a weak cell, therefore, individual cell voltages must be observed and
recorded. The Battery Service Data Sheet on Page 1802 may be utilized for most nickel-cadmium service
requirements.
NOTE: In some organizations cell number 1 is the most positive. In other organizations cell
number 1 is the most negative. It is important that all people within an organization utilize the
same system when referring to cell positions