Standard NiCd batteries have a wide tolerance range.  
Length Width
Rechargable Min Max Min Max
AAA-Rechargable 42.6 44.5 9.5 10.7
AA-Rechargable 47.3 50.5 13.5 14.7
C-Rechargable 45.0 50.0 24.8 26.0
D-Rechargable 57.0 61.5 31.6 33.0
Dimensions shown are mm
IEC-ANSI standards 
Battery Specifications, cross referenece & dimensions, ANSI, NEDA, IEC 
PDF's of Batteries: AAA-NiCd
AA-NiCd
C-NiCD
D-NiCd
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AAA-NiCd
ELECTROCHEMICAL SYSTEM:             NICKEL CADMIUM
NOMINAL VOLTAGE:                            1.2
MAXIMUM OFF-LOAD VOLTAGE:          1.5
RATED CAPACITY:                               320mAh to 1.0V at 20°C (68°F)
AVERAGE WEIGHT:                             0.37 oz (10.5 g)
OPERATING TEMP. RANGE:                CHARGE: 0°C to 45°C (32°F to 113°F)
                                                            DISCHARGE: -20°C to 50°C (-40°F to 122°F)
ANSI DESIGNATION:                            1.2K1
EVEREADY IEC NEDA OTHER
CH12 KR03 1.2K1 GP30AAAK


AA-NiCd
ELECTROCHEMICAL SYSTEM:             NICKEL CADMIUM
NOMINAL VOLTAGE:                            1.2
MAXIMUM OFF-LOAD VOLTAGE:          1.5
RATED CAPACITY:                               650mAh to 1.0V at 20°C (68°F)
AVERAGE WEIGHT:                             0.8 oz (22.7 g)
OPERATING TEMP. RANGE:                CHARGE: 0°C to 50°C (32°F to 122°F)
                                                           DISCHARGE: -20°C to 50°C (-4°F to 122°F)
ANSI DESIGNATION: 1.2K2
EVEREADY
IEC
NEDA
OTHER
CH15
KR6
1.2K2
GP60AAS


C-NiCd
ELECTROCHEMICAL SYSTEM: NICKEL CADMIUM
NOMINAL VOLTAGE: 1.2
MAXIMUM OFF-LOAD VOLTAGE: 1.5
RATED CAPACITY: 1.8Ah to 1.0V at 21°C (70°F)
AVERAGE WEIGHT: 1.9 oz (54 g)
OPERATING TEMP. RANGE: CHARGE: 0°C to 50°C (32°F to 122°F)
DISCHARGE: -20°C to 50°C (-4°F to 122°F)
ANSI DESIGNATION: 1.2K3
EVEREADY
IEC
NEDA
CH35
KR14
1.2K3


             
D-NiCd
ELECTROCHEMICAL SYSTEM:             NICKEL CADMIUM
NOMINAL VOLTAGE:                            1.2
MAXIMUM OFF-LOAD VOLTAGE:          1.5
RATED CAPACITY:                               4Ah to 1.0V at 21°C (70°F)
AVERAGE WEIGHT:                             4.4 oz (120.0 g)
OPERATING TEMP. RANGE:                CHARGE:0°C to 50°C (32°F to 122°F)
                                                           DISCHARGE: -20°C to 50°C (-4°F to 122°F)
ANSI DESIGNATION:                            1.2K4
EVEREADY IEC NEDA OTHER
CH4 KR20 1.2K4 GP450DK