Car, Motorcycle, Marine, and Light Industrial Batteries Groups Sizes Charts
Battery Group Sizes describe the maximum battery size that one battery should have in order to fit into a battery compartment intended for a battery of that size.
Although battery group charts in detail describe the batteries regarding their size, terminal orientation, nominal voltage, and similar, there is always a certain possibility that a battery is labeled as belonging to one battery group, but in reality, it belongs to some other group - for short, always check the battery size and terminal type/orientation when looking for a new battery.
On This Page:
- Most Popular Battery Groups
- List of Battery Groups
- List of Motorcycle/Powersports Battery Groups
- Cross-Reference Chart of the BCI Battery Groups, and DIN and EN Battery Codes
Most Popular Battery Groups
The following cross-reference chart lists some of the most popular automotive, marine, and industrial lead-acid and lithium battery sizes:
BCI Battery Group Size | L x W x H (inches) | L x W x H (cm) |
Group 24 Battery | 10.25 x 6.8125 x 8.875 | 26 x 17.3 x 22.5 |
Group 27 Battery | 12.0625 x 6.8125 x 8.875 | 30.6 x 17.3 x 22.5 |
Group 31 Battery | 13 x 6.8125 x 9.4375 | 33 x 17.3 x 24 |
Group 34 Battery | 10.25 x 6.8125 x 7.875 | 26 x 17.3 x 20 |
Group 35 Battery | 9.0625 x 6.875 x 8.875 | 23 x 17.5 x 22.5 |
Group 51 Battery | 9.374 x 5.0625 x 8.8125 | 23.8 x 12.9 x 22.3 |
Group 65 Battery | 12.0625 x 7.5 x 7.5625 | 30.6 x 19 x 19.2 |
Group 78 Battery | 10.25 x 7.0625 x 7.6875 | 26 x 17.9 x 19.6 |
The full list of the BCI battery sizes is much longer...
List of Battery Groups
The following cross-reference chart lists, if not all, then most of the battery groups and their sizes.
Note that the actual battery group chart also lists other information, like battery orientation and similar.
Also note that these sizes are not mandatory sizes for battery manufacturers - for short, always check the actual battery size:
BCI Group Size | L (mm) | W (mm) | H (mm) | L (inches) | W (inches) | H (inches) |
21 | 208 | 173 | 222 | 8 3/16 | 6 13/16 | 8 3/4 |
21R | 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 |
Group 24 Battery | 260 | 173 | 225 | 10 1/4 | 6 13/16 | 8 7/8 |
Group 24F Battery | 273 | 173 | 229 | 10 3/4 | 6 13/16 | 9 |
Group 24H Battery | 260 | 173 | 238 | 10 1/4 | 6 13/16 | 9 3/8 |
Group 24R Battery | 260 | 173 | 229 | 10 1/4 | 6 13/16 | 9 |
Group 24T Battery | 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 |
Group 27 Battery | 306 | 173 | 225 | 12 1/16 | 6 13/16 | 8 7/8 |
Group 27F Battery | 318 | 173 | 227 | 12 1/2 | 6 13/16 | 8 15/16 |
Group 27H Battery | 298 | 173 | 235 | 11 3/4 | 6 13/16 | 9 1/4 |
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 1/4 | 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 | 354 | 175 | 192 | 13 15/16 | 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 | 212 | 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 | 192 | 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 |
Passenger Car and Light Commercial 6 V Batteries (3 Cells) | ||||||
BCI Group Size | L (mm) | W (mm) | H (mm) | L (inches) | W (inches) | H (inches) |
1 | 232 | 181 | 238 | 9 1/8 | 7 1/8 | 9 3/8 |
2 | 264 | 181 | 238 | 10 3/8 | 7 1/8 | 9 3/8 |
2E | 492 | 105 | 232 | 19 7/16 | 4 1/8 | 9 1/8 |
2N | 254 | 141 | 227 | 10 | 5 9/16 | 8 15/16 |
17HF | 187 | 175 | 229 | 7 3/8 | 6 7/8 | 9 |
Heavy Duty Commercial 12 V Batteries (6 Cells) | ||||||
BCI Group Size | L (mm) | W (mm) | H (mm) | L (inches) | W (inches) | H (inches) |
4D | 527 | 222 | 250 | 20 3/4 | 8 3/4 | 9 7/8 |
6D | 527 | 254 | 260 | 20 3/4 | 10 | 10 1/4 |
8D | 527 | 283 | 250 | 20 3/4 | 11 1/8 | 9 7/8 |
28 | 261 | 173 | 240 | 10 5/16 | 6 13/16 | 9 7/16 |
29H | 334 | 171 | 232 | 13 1/8 | 6 3/4 | 9 1/8 |
30H | 343 | 173 | 235 | 13 1/2 | 6 13/16 | 9 1/4 |
Group 31 Battery | 330 | 173 | 240 | 13 | 6 13/16 | 9 7/16 |
Electric Vehicle 6 V Batteries (3 Cells) | ||||||
BCI Group Size | L (mm) | W (mm) | H (mm) | L (inches) | W (inches) | H (inches) |
GC2 | 264 | 183 | 277 | 10 3/8 | 7 3/16 | 10 7/8 |
GC2H | 264 | 183 | 295 | 10 3/8 | 7 3/16 | 11 5/8 |
Again, these are not mandatory values - for example, there are lithium golf cart batteries that are labeled as GC2 batteries that feature dimensions of GC2H batteries, with the nominal voltage of 12 volts and NOT 6 volts.
Motorcycle and Powersports Batteries
Motorcycle and Powersports batteries are relatively small and compact lead-acid and lithium batteries that are designed as starting/cranking batteries and are able to crank surprisingly large internal combustion gas and diesel engines.
When looking for a new battery for your motorcycle, ATV, boat, or similar, be sure to check:
- battery size: battery sizes are standardized, but it is highly recommended to check the actual size of your old battery and the size of the battery compartment.
- terminal type and orientation: proper battery terminal type ensures that the new battery can be connected without the use of any terminal adapters. Also, if the battery terminals are not oriented properly, there is a good chance that the cable will not be long enough to ensure a proper connection with the new battery.
- battery voltage and CCA: this is obvious, but just in case... The new battery must have the same voltage and the same or better Cold Cranking Amps (CCA) ratings than the old battery. Capacity itself is not that important to cranking batteries, but if the new battery capacity is better, that can be only a plus for a new battery.
- battery chemistry: the most popular Powersports batteries are sealed lead-acid AGM and Gel-Cell batteries, although lithium batteries are becoming more and more popular due to their ultra-lightweight design. It is not recommended to change the battery chemistry (lead-acid → lithium and vice versa), but if lithium drop-in battery replacements are used, they can replace lead-acid batteries in the Powersports applications, allowing new chemistry in the new battery to be used.
Of course, there are other things to verify when getting new battery, but these are the most important ones.
The following cross-reference chart lists motorcycle and Powersports batteries labels, their sizes, voltage, and terminal orientation:
Battery Model |
Dimensions L x W x H (inch/mm) |
Volts & Polarity |
12N24-3 | 7.25 x 4.9375 x 6.875 184 x 125 x 175 |
12 -/+ |
12N24-3A | 7.25 x 4.9375 x 6.875 184 x 125 x 175 |
12 -/+ |
12N5.5-3B | 5.3125 x 2.375 x 5.125 135 x 60 x 130 |
12 -/+ |
12N5.5-4A | 5.3125 x 2.375 x 5.125 135 x 60 x 130 |
12 +/- |
12N5-3B | 4.75 x 2.375 x 5.125 121 x 60 x 130 |
12 +/- |
12N5-4B | 4.75 x 2.375 x 5.125 121 x 60 x 130 |
12 -/+ |
12N7-3B | 5.3125 x 3.0 x 5.1875 135 x 76 x 132 |
12 -/+ |
12N7-4A | 5.3125 x 3.0 x 5.1875 135 x 76 x 132 |
12 +/- |
12N7-4B | 5.3125 x 3.0 x 5.1875 135 x 76 x 132 |
12 +/- |
12N9-3A | 5.3125 x 3.0 x 5.5 135 x 76 x 139 |
12 -/+ |
12N9-4B-1 | 5.3125 x 3.0 x 5.5 135 x 76 x 139 |
12 +/- |
51814 | 7.4375 x 3.25 x 6.75 186 x 82 x 171 |
12 -/+ |
51913 | 7.4375 x 3.25 x 6.75 186 x 82 x 171 |
12 -/+ |
53030 | 7.4375 x 5.125 x 6.75 186 x 130 x 171 |
12 -/+ |
6B8L-B | 4.75 x 2.75 x 3.75 120 x 70 x 95 |
6 +/- |
6N11-2D | 5.875 x 2.6875 x 4.0625 150 x 69 x 103 |
6 +/- |
6N11A-1B | 4.75 x 2.375 x 5.1875 121 x 60 x 131 |
6 -/+ |
6N2-2A | 2.75 x 1.8125 x 3.75 70 x 46 x 95 |
6 -/+ |
6N2-2A-4 | 2.75 x 1.8125 x 3.75 70 x 46 x 95 |
6 -/+ |
6N4-2A | 2.75 x 2.75 x 3.75 70 x 70 x 95 |
6 -/+ |
6N4-2A-2 | 2.75 x 2.75 x 3.75 70 x 70 x 95 |
6 -/+ |
6N4-2A-4 | 2.75 x 2.75 x 3.75 70 x 70 x 95 |
6 -/+ |
6N4-2A-5 | 2.75 x 2.75 x 3.75 70 x 70 x 95 |
6 -/+ |
6N4B-2A | 4.0 x 1.875 x 3.75 102 x 70 x 95 |
6 +/- |
6N4B-2A-3 | 4.0 x 1.875 x 3.75 102 x 70 x 95 |
6 +/- |
6N6-1D-2 | 3.875 x 2.25 x 4.25 99 x 57 x 108 |
6 -/+ |
6N6-3B-1 | 3.875 x 2.25 x 4.375 99 x 57 x 111 |
6 -/+ |
B10A-A2 | 5.3125 x 3.5625 x 6.125 135 x 90 x 155 |
12 +/- |
B10L-A2 | 5.3125 x 3.5625 x 5.6875 135 x 90 x 145 |
12 -/+ |
B10L-B | 5.3125 x 3.5625 x 5.6875 135 x 90 x 145 |
12 -/+ |
B10L-B2 | 5.3125 x 3.5625 x 5.6875 135 x 90 x 145 |
12 -/+ |
B12A-A | 5.25 x 3.125 x 6.25 134 x 80 x 159 |
12 +/- |
B12A-B | 5.25 x 3.125 x 6.25 134 x 80 x 159 |
12 +/- |
B12AL-A | 5.25 x 3.125 x 6.25 134 x 80 x 159 |
12 -/+ |
B12AL-A2 | 5.25 x 3.125 x 6.25 134 x 80 x 159 |
12 -/+ |
B12B-B2 | 6.3125 x 3.5625 x 5.1875 160 x 90 x 131 |
12 +/- |
B12C-A | 5.25 x 3.125 x 6.875 134 x 80 x 174 |
12 +/- |
B14-A2 | 5.3125 x 3.5625 x 6.5625 135 x 90 x 167 |
12 +/- |
B14A-A1 | 5.3125 x 3.5625 x 6.75 135 x 90 x 172 |
12 +/- |
B14A-A2 | 5.3125 x 3.5625 x 6.75 135 x 90 x 172 |
12 +/- |
B14-B2 | 5.3125 x 3.5625 x 6.5625 135 x 90 x 167 |
12 +/- |
B14L-A1 | 5.25 x 3.5625 x 6.5625 133 x 90 x 167 |
12 -/+ |
B14L-A2 | 5.3125 x 3.5625 x 6.5625 135 x 90 x 167 |
12 -/+ |
B14L-B2 | 5.3125 x 3.5625 x 6.5625 135 x 90 x 167 |
12 -/+ |
B16A-AB | 5.875 x 3.5625 x 7.0625 150 x 90 x 181 |
12 +/- |
B16AL-A2 | 8.0625 x 2.75 x 6.5625 205 x 70 x 166 |
12 -/+ |
B16-B | 6.875 x 3.875 x 6.125 175 x 99 x 156 |
12 +/- |
B16B-A | 6.3125 x 3.5 x 6.375 160 x 89 x 162 |
12 +/- |
B16B-A1 | 6.3125 x 3.5 x 6.375 160 x 89 x 162 |
12 +/- |
B16C-B | 6.875 x 3.875 x 6.875 175 x 99 x 175 |
12 +/- |
B16CL-B | 6.875 x 3.875 x 6.875 175 x 99 x 175 |
12 -/+ |
B16HL-A-LM | 8.0625 x 3.5625 x 6.375 205 x 90 x 162 |
12 -/+ |
B16L-B | 6.875 x 3.875 x 6.125 175 x 99 x 156 |
12 +/- |
B18-A | 7.125 x 3.5625 x 6.3125 181 x 90 x 160 |
12 +/- |
B18L-A | 7.125 x 3.5625 x 6.3125 181 x 90 x 160 |
12 -/+ |
B2.5L-C-1 | 3.125 x 2.75 x 4.125 80 x 70 x 105 |
12 -/+ |
B30CL-B | 6.625 x 5.1875 x 7.5625 168 x 132 x 192 |
12 -/+ |
B30L-B | 6.625 x 5.1875 x 6.9375 168 x 132 x 176 |
12 -/+ |
B38-6A | 4.6875 x 3.25 x 6.9375 119 x 83 x 161 |
6 -/+ |
B39-6 | 4.9375 x 1.875 x 4.9375 126 x 48 x 126 |
6 -/+ |
B3L-A | 3.9375 x 2.25 x 4.9375 100 x 57 x 110 |
12 -/+ |
B3L-B | 3.9375 x 2.25 x 4.9375 100 x 57 x 110 |
12 -/+ |
B49-6 | 3.5625 x 3.25 x 6.9375 90 x 83 x 161 |
6 +/- |
B4L-A | 4.75 x 2.8125 x 3.625 121 x 71 x 92 |
12 -/+ |
B4L-B | 4.75 x 2.8125 x 3.625 121 x 71 x 92 |
12 -/+ |
B50-N18A-A | 8.0625 x 3.5625 x 6.9375 205 x 90 x 176 |
12 +/- |
B50-N18L-A | 8.0625 x 3.5625 x 6.375 205 x 90 x 162 |
12 -/+ |
B50-N18L-A3 | 8.0625 x 3.5625 x 6.375 205 x 90 x 162 |
12 -/+ |
B50N-18L-LM | 8.0625 x 3.5625 x 6.375 205 x 90 x 162 |
12 -/+ |
B5L-B | 4.75 x 2.375 x 5.125 121 x 60 x 130 |
12 -/+ |
B60-N24-A | 7.25 x 4.9375 x 6.6875 184 x 125 x 170 |
12 |
B60-N24AL-B | 7.25 x 4.9375 x 6.6875 184 x 125 x 170 |
12 -/+ |
B60-N24L-A | 7.25 x 4.9375 x 6.6875 184 x 125 x 170 |
12 -/+ |
B7-A | 5.3125 x 3.0 x 5.1875 135 x 76 x 132 |
12 +/- |
B7B-B | 5.875 x 2.375 x 5.125 150 x 60 x 130 |
12 +/- |
B7C-A | 5.25 x 3.625 x 4.5625 133 x 92 x 116 |
12 -/+ |
B7L-B | 5.3125 x 3.0 x 5.1875 135 x 76 x 132 |
12 -/+ |
B9A-A | 5.3125 x 3.0 x 6.125 135 x 76 x 155 |
12 +/- |
B9-B | 5.3125 x 3.0 x 5.4375 135 x 76 x 138 |
12 +/- |
B9L-A2 | 5.3125 x 3.0 x 5.4375 135 x 76 x 138 |
12 -/+ |
B9L-B | 5.3125 x 3.0 x 5.4375 135 x 76 x 138 |
12 -/+ |
BT12A-BS | 5.875 x 3.4375 x 4.125 150 x 87 x 105 |
12 +/- |
BT12B-4 | 6.0 x 2.75 x 5.125 150 x 69 x 130 |
12 |
BT14B-4 | 5.875 x 3.4375 x 5.75 150 x 87 x 146 |
12 |
BT19BL-BS | 7.3125 x 3.1875 x 6.6875 185 x 81 x 170 |
12 -/+ |
BT4B-5 | 4.4375 x 1.5 x 3.375 113 x 38 x 86 |
12 |
BT7B-4 | 6.0 x 2.5625 x 3.6875 150 x 65 x 93 |
12 |
BT7B-BS | 5.875 x 2.5625 x 3.6875 150 x 65 x 93 |
12 +/- |
BT9B-4 | 5.875 x 2.6875 x 4.125 150 x 69 x 105 |
12 |
BTR9-BS | 5.875 x 3.4375 x 4.125 150 x 87 x 105 |
12 |
BTX12-BS | 5.875 x 3.5 x 5.125 150 x 88 x 130 |
12 +/- |
BTX14 | 5.875 x 3.4375 x 5.75 150 x 87 x 146 |
12 +/- |
BTX14AH-BS | 5.25 x 3.5 x 6.5625 134 x 89 x 166 |
12 +/- |
BTX14AHL-BS | 5.25 x 3.5 x 6.5625 134 x 89 x 166 |
12 -/+ |
BTX14-BS | 5.875 x 3.4375 x 5.75 150 x 87 x 146 |
12 +/- |
BTX14L-BS | 6.0 x 3.4375 x 5.75 153 x 87 x 146 |
12 -/+ |
BTX15L | 6.875 x 3.4375 x 5.125 175 x 87 x 130 |
12 -/+ |
BTX15L-BS | 6.875 x 3.4375 x 5.125 175 x 87 x 130 |
12 -/+ |
BTX16-BS | 5.875 x 3.4375 x 6.9375 150 x 88 x 161 |
12 +/- |
BTX16-BS-1 | 5.875 x 3.4375 x 6.9375 150 x 88 x 161 |
12 +/- |
BTX20-BS | 6.875 x 3.4375 x 6.125 175 x 87 x 155 |
12 +/- |
BTX20CH-BS | 6.0 x 3.4375 x 6.375 153 x 87 x 161 |
12 +/- |
BTX20H-BS | 6.875 x 3.4375 x 6.125 175 x 87 x 155 |
12 +/- |
BTX20HL-BS | 6.875 x 3.4375 x 6.125 175 x 87 x 155 |
12 -/+ |
BTX20L | 6.875 x 3.4375 x 6.125 175 x 87 x 155 |
12 -/+ |
BTX20L-BS | 6.875 x 3.4375 x 6.125 175 x 87 x 155 |
12 -/+ |
BTX24HL | 8.0625 x 3.4375 x 6.375 205 x 87 x 162 |
12 -/+ |
BTX24HL-BS | 8.0625 x 3.4375 x 6.375 205 x 87 x 162 |
12 -/+ |
BTX30L | 6.5625 x 4.9375 x 6.875 166 x 126 x 175 |
12 -/+ |
BTX30L-BS | 6.5625 x 4.9375 x 6.875 166 x 126 x 175 |
12 -/+ |
BTX4L-BS | 4.4375 x 2.75 x 3.375 113 x 70 x 86 |
12 -/+ |
BTX5L-BS | 4.4375 x 2.75 x 4.125 113 x 70 x 105 |
12 -/+ |
BTX7A-BS | 5.875 x 3.4375 x 3.5625 150 x 87 x 90 |
12 +/- |
BTX7L-BS | 4.4375 x 2.75 x 5.0625 113 x 70 x 129 |
12 -/+ |
BTX9-BS | 5.875 x 3.4375 x 4.125 150 x 87 x 105 |
12 +/- |
BTZ10S | 5.875 x 3.4375 x 3.6875 150 x 87 x 93 |
12 +/- |
BTZ12S | 5.875 x 3.4375 x 4.3125 150 x 87 x 110 |
12 +/- |
BTZ14S | 5.875 x 3.4375 x 4.3125 150 x 87 x 110 |
12 +/- |
BTZ16H | 5.875 x 3.4375 x 5.75 150 x 87 x 146 |
12 +/- |
BTZ20L | 6.875 x 3.4375 x 6.125 175 x 87 x 155 |
12 -/+ |
BTZ5S | 4.4375 x 2.75 x 3.375 113 x 70 x 85 |
12 -/+ |
BTZ7S | 4.4375 x 2.75 x 4.125 113 x 70 x 105 |
12 -/+ |
BTZ8V | 4.4375 x 2.75 x 5.125 113 x 70 x 130 |
12 -/+ |
H-12 | 7.875 x 5.0625 x 6.375 200 x 129 x 162 |
12 |
SB12A-A | 5.25 x 3.125 x 6.25 134 x 80 x 159 |
12 +/- |
SB14L-B2 | 5.3125 x 3.5625 x 6.5625 135 x 90 x 167 |
12 -/+ |
SB50N-18L-AT | 8.0625 x 3.5625 x 6.375 205 x 90 x 162 |
12 -/+ |
Manufacturers of the lithium starting batteries often label their products as batteries that may be used to replace several lead-acid battery sizes, and they often include foam/sponge/rubber battery spacers, allowing the user to fit smaller batteries in the larger battery compartments and to prevent the battery from moving around.
How to Charge the motorcycle and Powersports Batteries?
When the battery is used within the vehicle that features a charging system, let the vehicle keep the battery charged.
If the battery is taken out of the vehicle for whatever reason (maintenance, wintering, etc.), then:
- lead-acid Powersports batteries should be stored in a cold and well-ventilated area and connected to the advanced lead-acid battery chargers that feature temperature compensation and separate charging modes for flooded, AGM, and Gel-Cell batteries due to their small voltage differences. Also, such battery chargers, after fully recharging the batteries, automatically switch into maintenance mode, keeping the batteries fully charged for a longer period of time.
- lithium Powersports batteries are designed as drop-in replacements for lead-acid batteries and can be recharged by the vehicle's charging system, as long as the charging voltage is kept below 15 volts (for most models). When the lithium batteries are disconnected from the vehicle, these batteries should be kept in a cool area and charged using dedicated lithium battery chargers or with smart AGM battery chargers that feature dedicated lithium battery charging mode.
Charging currents and voltages for both lead-acid and lithium batteries should be as recommended by their manufacturers.
Cross-Reference Chart of the BCI Battery Groups, and DIN and EN Battery Codes
As always in life, standards between countries and continents sometimes differ.
Here is the cross-reference chart of the BCI battery groups and DIN/En battery codes:
Maximum BCI Battery Dimensions (L x W x H, inch/mm) |
BCI Group | Maximum DIN/EN Battery Dimensions (L x W x H mm) |
DIN Codes | EN Codes |
10 15/16 x 6 7/8 x 6 7/8 277 x 175 x 175 |
40R | 278 x 175 x 175 | T6, LB3 | 66LB |
11 3/16 x 6 7/8 x 6 7/8 293 x 175 x 175 |
41 | 293 x 175 x 175 | T65 | 54LB |
9 5/16 x 6 13/16 x 6 13/16 243 x 173 x 173 |
42 | 242 x 175 x 175 | T5, LB2 | 45LB |
9 11/16 x 6 7/8 x 7 1/2 246 x 175 x 190 |
47 | 242 x 175 x 190 | H5, L2 | 55L2 |
12 1/16 x 6 7/8 x 7 9/16 306 x 175 x 192 |
48 | 278 x 175 x 190 | H6, L3 | 66L3 |
13 15/16 x 6 7/8 x 7 3/16 354 x 175 x 192 |
49 | 354 x 175 x 190 | H8, L5 | 88L5 |
9 11/16 x 6 7/8 x 6 7/8 246 x 175 x 175 |
90 | 242 x 175 x 175 | T5, LB2 | 45LB |
11 x 6 7/8 x 6 7/8 280 x 175 x 175 |
91 | 278 x 175 x 175 | T6, LB3 | 66LB |
12 1/2 x 6 7/8 x 6 7/8 317 x 175 x 175 |
92 | 315 x 175 x 175 | T7, LB4 | 77LB |
15 x 6 7/8 x 6 7/8 354 x 175 x 175 |
93 | 354 x 175 x 175 | T8, LB5 | 88LB |
12 3/8 x 6 7/8 x 7 1/2 315 x 175 x 190 |
94R | 315 x 175 x 190 | H7, L4 | 77L4 |
15 9/16 x 6 7/8 x 7 1/2 394 x 175 x 190 |
95R | 394 x 175 x 190 | H9, L6 | - |
9 15/16 x 6 7/8 x 7 1/2 252 x 175 x 190 |
97R | 252 x 175 x 190 | H5, L2 | 55L2 |
11 3/16 x 6 7/8 x 7 1/2 283 x 175 x 190 |
98R | 283 x 175 x 190 | H6, L3 | 66L3 |
8 1/8 x 6 7/8 x 6 7/8 207 x 175 x 175 |
99 | 207 x 175 x 175 | T4, LB1 | 36LB |
8 1/4 x 6 7/8 x 6 7/8 210 x 175 x 175 |
99R | 210 x 175 x 175 | T4, LB1 | 36LB |
- | - | 175 x 175 x 190 | H3, L0 | 32L0 |
- | - | 297 x 175 x 190 | H4, L1 | 45L1 |
As mentioned several times on our site, before buying a new car/marine/industrial battery, always check the size of your battery compartment, your old battery, battery terminals, wiring, and similar, and only then consider buying a new battery.
And whatever You do, stay safe - most of these batteries are able to provide huge currents that can cause injuries or worse ...
Best Group 24 Batteries
Group 24 batteries are medium-size lead-acid and lithium batteries commonly used in deep cycle applications, including automotive, marine, light-industrial, off-the-grid, medical, security, and other similar applications.
Group 24 batteries are rarely built as starting/cranking batteries, but dual-purpose group 24 batteries can crank surprisingly large gas and diesel engines.
Published: March 17, 2023.
Group 31 Dual Purpose and Deep Cycle Batteries
Group 31 batteries are very popular marine, automotive and industrial batteries - they are mid-size batteries offering good capacity and high starting currents at an acceptable weight.
Group 31 are mostly lead-acid batteries optimized for deep cycle or dual-purpose applications, but lithium-ion batteries are also present, especially as LiFePO4 deep-cycle batteries.
Published: March 11, 2023.