The Battery Council International (BCI) has created designations known as group sizes that provide a battery's physical dimensions in length, width, and height. Not all auto manufacturers use the BCI Group Size chart, however, most domestic (United States) cars comply. Knowing the exact BCI group battery size helps to find new battery replacement for your automobile. There are over 50 different battery group sizes.
BCI Group Size L x W x H (mm) L x W x H (inches) Amazon Search 21 208 x 173 x 222 8 3/16 x 6 13/16 x 8 3/4 Group 21 Battery 21R 208 x 173 x 222 8 3/16 x 6 13/16 x 8 3/4 Group 21R Battery 22F 241 x 175 x 211 9 1/2 x 6 7/8 x 8 5/16 Group 22F Battery 22HF 241 x 175 x 229 9 1/2 x 6 7/8 x 9 Group 22HF Battery Group 22NF Batteries 240 x 140 x 227 9 7/16 x 5 1/2 x 8 15/16 Group 22NF Battery 22R 229 x 175 x 211 9 x 6 7/8 x 8 5/16 Group 22R Battery Group 24 Batteries 260 x 173 x 225 10 1/4 x 6 13/16 x 8 7/8 Group 24 Battery 24F 273 x 173 x 229 10 3/4 x 6 13/16 x 9 Group 24F Battery 24H 260 x 173 x 238 10 1/4 x 6 13/16 x 9 3/8 Group 24H Battery 24R 260 x 173 x 229 10 1/4 x 6 13/16 x 9 Group 24R Battery 24T 260 x 173 x 248 10 1/4 x 6 13/16 x 9 3/4 Group 24T Battery 25 230 x 175 x 225 9 1/16 x 6 7/8 x 8 7/8 Group 25 Battery Group 26 Battery 208 x 173 x 197 8 3/16 x 6 13/16 x 7 3/4 Group 26 Battery Group 26R Battery 208 x 173 x 197 8 3/16 x 6 13/16 x 7 3/4 Group 26R Battery Group 27 Battery 306 x 173 x 225 12 1/16 x 6 13/16 x 8 7/8 Group 27 Battery 27F 318 x 173 x 227 12 1/2 x 6 13/16 x 8 15/16 Group 27F Battery 27H 298 x 173 x 235 11 3/4 x 6 13/16 x 9 1/4 Group 27H Battery 29NF 330 x 140 x 227 13 x 5 1/2 x 8 15/16 Group 29NF Battery 33 338 x 173 x 238 13 5/16 x 6 13/16 x 9 3/8 Group 33 Battery Group 34 Battery 260 x 173 x 200 10 1/4 x 6 13/16 x 7 7/8 Group 34 Battery Group 34R Battery 260 x 173 x 200 10 1/4 x 6 13/16 x 7 7/8 Group 34R Battery Group 35 Battery 230 x 175 x 225 9 1/16 x 6 7/8 x 8 7/8 Group 35 Battery 36R 263 x 183 x 206 10 3/8 x 7 3/16 x 8 1/8 Group 36R Battery 40R 278 x 175 x 175 11 x 6 15/16 x 6 15/16 Group 40R Battery 41 293 x 175 x 175 11 9/16 x 6 15/16 x 6 15/16 Group 41 Battery 42 242 x 175 x 175 9 9/16 x 6 15/16 x 6 15/16 Group 42 Battery 43 334 x 175 x 205 13 1/8 x 6 7/8 x 8 1/16 Group 43 Battery 45 240 x 140 x 227 9 7/16 x 5 1/2 x 8 15/16 Group 45 Battery 46 273 x 173 x 229 10 3/4 x 6 13/16 x 9 Group 46 Battery Group 47 Batteries 242 x 175 x 190 9 9/16 x 6 7/8 x 7 1/2 Group 47 Battery Group 48 Batteries 278 x 175 x 190 11 x 6 7/8 x 7 1/2 Group 48 Battery Group 49 Batteries 354 x 175 x 190 13 15/16 x 6 7/8 x 7 1/2 Group 49 Battery 50 343 x 127 x 254 13 1/2 x 5 x 10 Group 50 Battery Group 51 Batteries 238 x 129 x 223 9 3/8 x 5 1/16 x 8 3/4 Group 51 Battery Group 51R Batteries 238 x 129 x 223 9 3/8 x 5 1/16 x 8 3/4 Group 51R Battery 52 186 x 147 x 210 7 5/16 x 5 13/16 x 8 1/4 Group 52 Battery 53 330 x 119 x 210 13 x 4 11/16 x 8 1/4 Group 53 Battery 54 186 x 154 x 212 7 5/16 x 6 1/16 x 8 3/8 Group 54 Battery 55 218 x 154 x 212 8 9/16 x 6 1/16 x 8 3/8 Group 55 Battery 56 254 x 154 x 212 10 x 6 1/16 x 8 3/8 Group 56 Battery 57 205 x 183 x 177 8 1/16 x 7 3/16 x 6 15/16 Group 57 Battery Group 58 Batteries 255 x 183 x 177 10 1/16 x 7 3/16 x 6 15/16 Group 58 Battery Group 58R Batteries 255 x 183 x 177 10 1/16 x 7 3/16 x 6 15/16 Group 58R Battery 59 255 x 193 x 196 10 1/16 x 7 5/8 x 7 3/4 Group 59 Battery 60 332 x 160 x 225 13 1/16 x 6 5/16 x 8 7/8 Group 60 Battery 61 192 x 162 x 225 7 9/16 x 6 3/8 x 8 7/8 Group 61 Battery 62 225 x 162 x 225 8 7/8 x 6 3/8 x 8 7/8 Group 62 Battery 63 258 x 162 x 225 10 3/16 x 6 3/8 x 8 7/8 Group 63 Battery 64 296 x 162 x 225 11 5/8 x 6 3/8 x 8 7/8 Group 64 Battery Group 65 Batteries 306 x 192 x 192 12 1/16 x 7 9/16 x 7 9/16 Group 65 Battery 66 306 x 192 x 194 12 1/16 x 7 9/16 x 7 11/16 Group 66 Battery 67R 231 x 175 x 176 9 1/8 x 6 7/8 x 6 15/16 Group 67R Battery 70 208 x 179 x 186 8 3/16 x 7 1/16 x 7 5/16 Group 70 Battery 71 208 x 179 x 216 8 3/16 x 7 1/16 x 8 1/2 Group 71 Battery 72 230 x 179 x 210 9 1/16 x 7 1/16 x 8 1/4 Group 72 Battery 73 230 x 179 x 216 9 1/16 x 7 1/16 x 8 1/2 Group 73 Battery 74 260 x 184 x 222 10 1/4 x 7 1/4 x 8 3/4 Group 74 Battery Group 75 Batteries 230 x 179 x 186 9 1/16 x 7 1/16 x 7 5/16 Group 75 Battery 76 334 x 179 x 216 13 1/8 x 7 1/16 x 8 1/2 Group 76 Battery 77 306 x 184 x 222 12 1/16 x 7 1/4 x 8 3/4 Group 77 Battery Group 78 Batteries 260 x 179 x 186 10 1/4 x 7 1/16 x 7 5/16 Group 78 Battery 79 307 x 179 x 188 12 1/16 x 7 1/16 x 7 3/8 Group 79 Battery Group 85 Batteries 230 x 173 x 203 9 1/16 x 6 13/16 x 8 Group 85 Battery Group 86 Batteries 230 x 173 x 203 9 1/16 x 6 13/16 x 8 Group 86 Battery 90 243 x 175 x 175 9 9/16 x 6 7/8 x 6 7/8 Group 90 Battery 91 280 x 175 x 175 11 x 6 7/8 x 6 7/8 Group 91 Battery 92 316 x 175 x 175 12 7/16 x 6 7/8 x 6 7/8 Group 92 Battery 93 354 x 175 x 175 13 15/16 x 6 7/8 x6 7/8 Group 93 Battery Group 94R Batteries 315 x 175 x 190 12 7/16 x 6 7/8 x 7 1/2 Group 94R Battery Group 95R Batteries 394 x 175 x 190 15 9/16 x 6 7/8 x 7 1/2 Group 95R Battery Group 96R Batteries 242 x 175 x 175 9 1/2 x 6 7/8 x 6 7/8 Group 96R Battery 97R 252 x 175 x 190 9 15/16 x 6 7/8 x 7 1/2 Group 97R Battery 98R 283 x 175 x 190 11 1/8 x 6 7/8 x 7 1/2 Group 98R Battery 99 207 x 175 x 175 8 1/8 x 6 7/8 x 6 7/8 Group 99 Battery 99R 210 x 175 x 175 8 1/4 x 6 7/8 x 6 7/8 Group 99R Battery 100 260 x 179 x 188 10 1/4 x 7 1/16 x 7 3/8 Group 100 Battery 101 260 x 179 x 170 10 1/4 x 7 1/16 x 6 11/16 Group 101 Battery 121R 208 x 177 x 215 8 1/4 x 7 x 8 1/2 Group 121R Battery 124 265 x 175 x 214 10 7/16 x 6 7/8 x 8 7/16 Group 124 Battery 124R 262 x 177 x 218 10 3/8 x 7 x 8 5/8 Group 124R Battery 151R 188 x 125 x 225 7 7/16 x 4 15/16 x 8 7/8 Group 151R Battery