Coversheet 1
History of revisions 2
Update 2
Copyright 2
Table of effective contents 3
Abbreviations 5
Units (physical) 5
1.0 Maintenance Manual for the HAWKER
®
Ni/Cd Airborne Battery – Purpose
and Use 6
1.1. Application of Ni/Cd aircraft batteries 6
1.2. Features and designation of the battery 6
1.2.1 The battery 6
1.2.2. The cells 7
1.2.2.1 Positive and negative electrodes 7
1.2.2.2 Separators 7
1.2.2.3 Electrolyte 7
1.2.2.4 Vents 7
1.2.2.5 Pole terminals and connectors 7
1.3 Basic electrochemical reactions in cells 7
1.3.1 Conversion of energy 8
1.3.2 Electrolysis and evolution of gas during
overcharge and reversal charge 8
1.3.3 Oxygen recombination 8
1.4 Specified definitions 8
1.4.1 Current Rates 8
1.4.2 Rated Current (I
1
)8
1.4.3 Rated Capacity 8
1.4.4 Constant voltage current I
pr
8
1.4.5 EPV = End point voltage 8
1.5 Commonly used terms 8
1.5.1 Constant (low) Current Charging 8
1.5.2 IUI Charging 8
1.5.3 End of charge voltage 8
1.5.4 Constant Voltage Charging 8
1.5.5 Capacity test 8
1.5.6 Open circuit voltage 9
1.5.7 Deep discharge 9
1.5.8 Reconditioning 9
1.5.9 Capacity reduction during service
of the battery 9
1.5.10 Aging and loss of performance 9
1.5.11 Airworthiness 9
1.5.12 End of life capacity. 9
1.6 Technical data 9
1.6.1 Operational parameters and range
of application 9
1.6.2 Technical cell data: table 1 9
1.6.3 Technical battery data: table 2 10
2.0 Safety measures and instructions
for aircraft batteries 11
2.1 Instructions, warnings and notes 11
2.2 General safety instructions and
recommendations 11
3.0 Commissioning of new and
prolonged stored batteries 12
3.1 Log book 12
3.2 Goods Inwards inspection Task for
new batteries 12
3.3 Commissioning Task for new batteries 13
3.4 Release to aircraft Task for batteries 16
4.0 Maintenance Intervals 17
4.1 Unscheduled maintenance procedures 17
4.2 Scheduled maintenance procedures 17
4.2.1 Monthly check on aircraft 17
4.2.2 Quarterly maintenance 17
4.2.3 Annual maintenance 17
4.3 Maintenance facility 17
4.4 Spare parts for repair 17
4.5 Equipment, Tools and Consumables
for maintenance 17
3
Contents
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