BCI Battery Group Size Chart

If you want to find out how many batteries are in your device and what their sizes are, knowing the BCI group size can be a good place start. But this isn’t always enough information-batteries also vary by: -purpose (starting vs deep cycle), cell type(AGM vs gel)and chemistry Primarily lead acidic or nickel metal hydride cells? What kind of terminals does it have?

The battery groups and their dimensions in inches or centimeters are:

Group Size

Size (Inches)

Size (cm)

10.2 x 6.8 x 8.8

26 x 17.3 x 22.5

Group 27 Batteries

12 x 6.8 x 8.8

30.6 x 17.3 x 22.5

Group 31 Batteries

13 x 6.8 x 9.4

33 x 17.3 x 24

Group 34 Batteries

10.2 x 6.8 x 7.8

26 x 17.3 x 20

Group 35 Batteries

9 x 6.8 x 8.8

23 x 17.5 x 22.5

Group 51 Batteries

9.3 x 5 x 8.8

23.8 x 12.9 x 22.3

9.3 x 5 x 8.8

23.8 x 12.9 x 22.3

Group 65 Batteries

12 x 7.5 x 7.5

30.6 x 19 x 19.2

Group 78 Batteries

10.2 x 7 x 7.6

26 x 17.9 x 19.6

There are a few things to check when replacing your battery, including chemistry and electrical features.

Our BCI battery sizing chart below will help you find the right fit for your device.

Group Size

Size (Inches)

Size (cm)

21

8.1 x 6.8 x 8.7

20.8 x 17.3 x 22.2

21R

8.1 x 6.8 x 8.7

20.8 x 17.3 x 22.2

22F

9.5 x 6.8 x 8.3

24.1 x 17.5 x 21.1

22HF

9.5 x 6.8 x 9

24.1 x 17.5 x 22.9

22NF

9.4 x 5 .5 x 8.9

24 x 14 x 22.7

22R

9 x 6.8 x 8.3

22.9 x 17.5 x 21.1

24H

10.2 x 6.8 x 9.3

26 x 17.3 x 23.8

24F

10.7 x 6.8 x 9

27.3 x 17.3 x 22.9

24R

10.2 x 6.8 x 9

26 x 17.3 x 22.9

24T

10.2 x 6.8 x 9.7

26 x 17.3 x 24.8

25

9 x 6.8 x 8.8

23 x 17.5 x 22.5

26

8.1 x 6.8 x 7.7

20.8 x 17.3 x 19.7

26R

8.1 x 6.8 x 7.7

20.8 x 17.3 x 19.7

27

12 x 6.8 x 8.8

30.6 x 17.3 x 22.5

27F

12.5 x 6.8 x 8.9

31.8 x 17.3 x 22.7

27H

11.7 x 6.8 x 9.2

29.8 x 17.3 x 23.5

29NF

13 x 5.5 x 8.9

33 x 14 x 22.7

33

13.3 x 6.8 x 9.3

33.8 x 17.3 x 23.8

34

10.2 x 6.8 x 7.8

26 x 17.3 x 20

34R

10.2 x 6.8 x 7.8

26 x 17.3 x 20

35

9 x 6.8 x 8.8

23 x 17.5 x 22.536R

36R

10.3 x 7.2 x 8.1

26.3 x 18.3 x 20.6

40R

10.9 x 6.8 x 6.8

27.7 x 17.5 x 17.5

41

11.1 x 6.8 x 6.8

29.3 x 17.5 x 17.5

42

9.3 x 6.8 x 6.8

24.3 x 17.3 x 17.3

43

13.1 x 6.8 x 8

33.4 x 17.5 x 20.5

45

9.4 x 5.5 x 8.9

24 x 14 x 22.7

46

10.7 x 6.8 x 9

27.3 x 17.3 x 22.9

47

9.6 x 6.8 x 7.5

24.6 x 17.5 x 19

48

12 x 6.8 x 7.5

30.6 x 17.5 x 19.2

49

15 x 6.8 x 7.1

38.1 x 17.5 x 19.2

50

13.5 x 5 x 10

34.3 x 12.7 x 25.4

51

9.3 x5 x 8.8

23.8 x 12.9 x 22.3

51R

9.3 x 5 x 8.8

23.8 x 12.9 x 22.3

52

7.3 x 5.8 x 8.2

18.6 x 14.7 x 21

53

13 x 4.6 x 8.2

33 x 11.9 x 21

54

7.3 x 6 x 8.3

18.6 x 15.4 x 21.2

55

8.6 x 6 x 8.3

21.8 x 15.4 x 21.2

56

10 x 6 x 8.3

25.4 x 15.4 x 21.2

57

8 x 7.1 x 6.9

20.5 x 18.3 x 17.7

58

10 x 7.1 x 6.9

25.5 x 18.3 x 17.7

58R

10 x 7.1 x 6.9

25.5 x 18.3 x 17.7

59

10 x 7.6 x 7.7

25.5 x 19.3 x 19.6

60

13 x 6.3 x 8.8

33.2 x 16 x 22.5

61

7.5 x 6.3 x 8.8

19.2 x 16.2 x 22.5

62

8.8 x 6.3 x 8.8

22.5 x 16.2 x 22.5

63

10.1 x 6.3 x 8.8

25.8 x 16.2 x 22.5

64

11.6 x 6.3 x 8.8

29.6 x 16.2 x 22.5

65

12 x 7.5 x 7.5

30.6 x 19 x 19.2

70

8.1 x 7 x 7.6

20.8 x 17.9 x 19.6

71

8.1 x 7 x 8.5

20.8 x 17.9 x 21.6

72

9 x 7 x 8.2

23 x 17.9 x 21

73

9 x 7 x 8.5

23 x 17.9 x 21.6

74

10.2 x 7.2 x 8.7

26 x 18.4 x 22.2

75

9 x 7 x 7.6

23 x 17.9 x 19.6

76

13.1 x 7 x 8.5

33.4 x 17.9 x 21.6

78

10.2 x 7 x 7.6

26 x 17.9 x 19.6

85

9 x 6.8 x 8

23 x 17.3 x 20.3

86

9 x 6.8 x 8

23 x 17.3 x 20.3

90

9.6 x 6.8 x 6.8

24.6 x 17.5 x 17.5

91

11 x 6.8 x 6.8

28 x 17.5 x 17.5

92

12.5 x 6.8 x 6.8

31.7 x 17.5 x 17.5

93

15 x 6.8 x6.8

35.4 x 17.5 x 17.5

94R

12.3 x 6.8 x 7.5

31.5 x 17.5 x 19

95R

15.5 x 6.8 x 7.5

39.4 x 17.5 x 19

96R

9.5 x 6.8 x 6.8

24.2 x 17.3 x 17.5

97R

9.9 x 6.8 x 7.5

25.2 x 17.5 x 1998R

98R

11.1 x 6.8 x 7.5

28.3 x 17.5 x 19

99

8.1 x 6.8 x 6.8

20.7 x 17.5 x 17.5

99R

8.2 x 6.8 x 6.8

21 x 17.5 x 17.5

100

10.2 x 7 x 7.3

26 x 17.9 x 18.8

101

10.2 x 7 x 6.6

26 x 17.9 x 17

121R

8.2 x 7 x 8.5

20.8 x 17.7 x 21.5

124

10.4 x 6.8 x 8.4

26.5 x 17.5 x 21.4

124R

10.3 x 7 x 8.3

26.2 x 17.7 x 21.8

151R

7.3 x 4.9 x 8.8

18.8 x 12.5 x 22.5

Group Size

Size (Inches)

Size (cm)

1

9.1 x 7.1 x 9.3

23.2 x 18.1 x 23.8

2

10.3 x 7.1 x 9.3

26.4 x 18.1 x 23.8

2E

19.4 x 4.1 x 9.1

49.2 x 10.5 x 23.2

2N

10 x 5.5 x 8.9

25.4 x 14.1 x 22.7

17HF

7.3 x 6.8 x 9

18.7 x 17.5 x 22.9

19L

8.5 x 7 x 7.5

21.6 x 17.8 x 19.1

Commercial/Industrial Batteries Group Size Chart

Group Size

Cells

Size (Inches)

Size (cm)

3EE

6

19.3 x 4.3 x 8.8

49.1 x 11.1 x 22.5

3ET

6

19.3 x 4.3 x 9.8

49.1 x 11.1 x 24.9

4D

6

20.7 x 8.7 x 9.8

52.7 x 22.2 x 25

4DLT

6

20 x 8.1 x 7.9

50.8 x 20.8 x 20.2

6D

6

20.7 x 10 x 10.2

52.7 x 25.4 x 26

8D

6

20.7 x 11.1 x 9.8

52.7 x 28.3 x 25

12T

6

7 x 6.9 x 7.9

17.9 x 17.7 x 20.2

28

6

10.3 x 6.8 x 9.4

26.1 x 17.3 x 24

29H

6

13.1 x 6.7 x 9.1

33.4 x 17.1 x 23.2

30H

6

13.5 x 6.8 x 9.2

34.3 x 17.3 x 23.5

31

6

13 x 6.8 x 9.4

33 x 17.3 x 24

3

3

11.7 x 7.1 x 9.3

29.8 x 18.1 x 23.8

3EH

3

19.3 x 4.3 x 9.8

49.1 x 11.1 x 24.9

4

3

13.1 x 7.1 x 9.3

33.4 x 18.1 x 23.8

4EH

3

19.3 x 5 x 9.8

49.1 x 12.7 x 24.9

5D

3

13.7 x 7.1 x 9.3

34.9 x 18.1 x 23.8

7D

3

16.2 x 7.1 x 9.3

41.3 x 18.1 x 23.8

Electric Vehicle Group Size Chart

Group Size

Cells

Volts

Size (Inches)

Size (cm)

GC2

3

6V

10.3 x 7.1 x 10.6

26.4 x 18.3 x 27

GC2H

4

6V

10.3 x 7.1 x 11.6

26.4 x 18.3 x 29.5

GC8

6

8V

10.3 x 7.1 x 10.8

26.4 x 18.3 x 27.7

GC8H

6

8V

10.3 x 7.1 x 11.6

26.4 x 18.3 x 29.5

GC12

6

12V

12.8 x 7.1 x 10.8

32.7 x 18.3 x 27.7

The difference between a few BCI battery groups can be just one inch, but it’s enough for safety reasons. If you have another type of device that uses these types please make sure to check with professionals before switching out your batteries so as not cause any damage or injuries!

BCI Battery Groups, and DIN and EN Codes – Cross Reference Chart

The following chart lists all of the most popular BCI battery groups, their DIN and EN equivalent codes:

BCI Group

DIN

EN

Size (cm)

40R

T6, LB3

66LB

27.8 x 17.5 x 17.5

41

T65

54LB

29.3 x 17.5 x 17.5

42

T5, LB2

45LB

24.2 x 17.5 x 17.5

47

H5, L2

55L2

24.2 x 17.5 x 19

48

H6, L3

66L3

27.8 x 17.5 x 19

49

H8, L5

88L5

35.4 x 17.5 x 19

90

T5, LB2

45LB

24.2 x 17.5 x 17.5

91

T6, LB3

66LB

27.8 x 17.5 x 17.5

92

T7, LB4

77LB

31.5 x 17.5 x 17.5

93

T8, LB5

88LB

35.4 x 17.5 x 17.5

94R

H7, L4

77L4

31.5 x 17.5 x 19

95R

H9, L6

39.4 x 17.5 x 19

97R

H5, L2

55L2

25.2 x 17.5 x 19

98R

H6, L3

66L3

28.3 x 17.5 x 19

99

T4, LB1

36LB

20.7 x 17.5 x 17.5

99R

T4, LB1

36LB

21 x 17.5 x 17.5

The battery group industry is a tough one to navigate, with so many different manufacturers and models. Luckily we have this cross-reference chart that lists all of the dimensions for you! Take note though – not only do these batteries include their size in millimeters but also which terminals they’re compatible with as well as what type base hold down or lifting edge mechanism may be present on each individual cell slot.”

The BCI Group 48 batteries have dimensions of 306 x 175x192mm with the positive terminal located on right side while comparable DIN/EN counterparts are H6(278×175 mm), L3 (276) & 66L 3(280). However 98R version has similar size but differs in shape making it more appropriate for variousated applications where higher current will be required such as electric vehicles or solar power plants among others.

The BCI group 48 is a maintenance free Sealed Lead Acid (SLA) battery which stands for Absorbent Glass Mat separator and is notably known as EFB. This lead acid battery will be the best suitable options with respect to cost and performance when it comes to deep cycle applications such as UPS systems, solar power plants and electric vehicles.

Although there are many comparisons with respect to amp hour ratings, life expectancy and deep cycling capabilities of both 48V and 12V batteries, the bottom line would be that if you need more capacity then go for 96V or 144V system as increasing voltage will increase both capacity as well as load supportability without sacrificing speed.

About the author, Phil Borges

Phil Borges is a battery aficionado. He's written extensively about batteries, and he loves nothing more than discussing the latest innovations in the industry. He has a deep understanding of how batteries work, and he's always on the lookout for new ways to improve their performance.

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