Most common battery case sizes, by BCI Group

On the basis of certain standard and norms, BCI (Battery council International) designated certain group numbers to batteries. A group number represents physical dimensions such as length, width, height, terminal types and post configuration of a battery. If you are looking to replace your battery, measure the length, the width and the height of the battery and compare it with the chart below, to get the exact group number of your battery. Once you have a group number, you can easily purchase the exact battery for your vehicle by asking for the particular group number.

BCIGroup Number	Maximum Overall Dimensions
	Millimeters			Inches
	L	W	H	L	W	H
21	208	173	222	8 3/16	6 13/16	8 3/4
22F	241	175	211	9 1/2	6 7/8	8 5/16
22HF	241	175	229	9 1/2	6 7/8	9
22NF	240	140	227	9 7/16	5 1/2	8 15/16
22R	229	175	211	9	6 7/8	8 5/16
24	260	173	225	10 1/4	6 13/16	8 7/8
24F	273	173	229	10 3/4	6 13/16	9
24H	260	173	238	10 1/4	6 13/16	9 3/8
24R	260	173	229	10 1/4	6 13/16	9
24T	260	173	248	10 1/4	6 13/16	9 3/4
25	230	175	225	9 1/16	6 7/8	8 7/8
26	208	173	197	8 3/16	6 13/16	7 3/4
26R	208	173	197	8 3/16	6 13/16	7 3/4
27	306	173	225	12 1/16	6 13/16	8 7/8
27F	318	173	227	12 1/2	6 13/16	8 15/16
27H	298	173	235	11 3/4	6 13/16	6 13/16
29NF	330	140	227	13	5 1/2	8 15/16
33	338	173	238	13 5/16	6 13/16	9 3/8
34	260	173	200	10 13/16	6 13/16	7 7/8
34R	260	173	200	10 1/4	6 13/16	7 7/8
35	230	175	225	9 1/16	6 7/8	8 7/8
36R	263	183	206	10 3/8	7 1/4	8 1/8
40R	277	175	175	10 15/16	6 7/8	6 7/8
41	293	175	175	11 3/16	6 7/8	6 7/8
42	243	173	173	9 5/16	6 13/16	6 13/16
43	334	175	205	13 1/8	6 7/8	8 1/16
45	240	140	227	9 7/16	5 1/2	8 15/16
46	273	173	229	10 3/4	6 13/16	9
47	246	175	190	9 11/16	6 7/8	7 1/2
48	306	175	192	12 1/16	6 7/8	7 9/16
49	381	175	192	15	6 7/8	7 3/16
50	343	127	254	13 1/2	5	10
51	238	129	223	9 3/8	5 1/16	8 13/16
51R	238	129	223	9 3/8	5 1/16	8 13/16
52	186	147	210	7 5/16	5 13/16	8 1/4
53	330	119	210	13	4 11/16	8 1/4
54	186	154	212	7 5/16	6 1/16	8 3/8
55	218	154	212	8 5/8	6 1/16	8 3/8
56	254	154	222	10	6 1/16	8 3/8
57	205	183	177	8 1/16	7 3/16	6 15/16
58	255	183	177	10 1/16	7 3/16	6 15/16
58R	255	183	177	10 1/16	7 3/16	6 15/16
59	255	193	196	10 1/16	7 5/8	7 3/4
60	332	160	225	13 1/16	6 5/16	8 7/8
61	192	162	225	7 9/16	6 3/8	8 7/8
62	225	162	225	8 7/8	6 3/8	8 7/8
63	258	162	225	10 3/16	6 3/8	8 7/8
64	296	162	225	11 11/16	6 3/8	8 7/8
65	306	190	292	12 1/16	7 1/2	7 9/16
70	208	179	196	8 3/16	7 1/16	7 11/16
71	208	179	216	8 3/16	7 1/16	8 1/2
72	230	179	210	9 1/16	7 1/16	8 1/4
73	230	179	216	9 1/16	7 1/16	8 1/2
74	260	184	222	10 1/4	7 1/4	8 3/4
75	230	179	196	9 1/16	7 1/16	7 11/16
76	334	179	216	13 1/8	7 1/16	8 1/2
78	260	179	196	10 1/4	7 1/16	7 11/16
85	230	173	203	9 1/16	6 13/16	8
86	230	173	203	9 1/16	6 13/16	8
90	246	175	175	9 11/16	6 7/8	6 7/8
91	280	175	175	11	6 7/8	6 7/8
92	317	175	175	12 1/2	6 7/8	6 7/8
93	354	175	175	15	6 7/8	6 7/8
95R	394	175	190	15 9/16	6 7/8	7 1/2
96R	242	173	175	9 9/16	6 13/16	6 7/8
97R	252	175	190	9 15/16	6 7/8	7 1/2
98R	283	175	190	11 3/16	6 7/8	7 1/2