BCI Group Size: Group24 Battery VS Group 27 Battery

October 6, 2023Justlithiumbattery0 comments

Introduction:

When you purchase a battery, you can usually see the dimensions the seller provides directly. However, sometimes you may encounter the term “Group Size” on the battery casing, such as Group 24 or Group 27. Do you understand the meaning of these names? If you’re feeling confused, let’s clarify this together today.

What is ‘Group Size’? Who came up with it?

BCI Group Size (Battery Council International) is a standard used to identify and categorize automotive batteries, first introduced in 1920. BCI is a nonprofit organization comprising various battery-related industry organizations, forming an industry association. The initial purpose behind introducing Group Size was to standardize market classification standards, encouraging all manufacturers, service industries, and consumers to adhere to them for accurate and efficient communication. With the market standardized, providing a specific BCI Group Size is all needed to determine a battery’s size and shape, greatly simplifying communication and ensuring accuracy.

Why is it so rare to hear the term Group Size nowadays?

As you know, it has been 103 years since the BCI Group Size 1920 was proposed in 2023. The batteries used by BCI at that time were mainly lead-acid batteries. Now, we mainly use lithium-ion batteries. You know, lithium batteries are much smaller than lead-acid batteries in size and weight, so this concept is gradually fading out of people’s sight, and people are more accustomed to describing the size directly instead of continuing to use the old BCI Size.

Complete Group Size List:

Model	Size（mm）	Size（inches）	Space（m³）
21	208 x 173 x 222	8.19 x 6.81 x 8.74	0.00389502388
21R	208 x 173 x 222	8.19 x 6.81 x 8.74	0.00389502388
22F	241 x 175 x 211	9.49 x 6.89 x 8.31	0.00483441375
22HF	241 x 175 x 229	9.49 x 6.89 x 9.02	0.00530067175
Group 22NF	240 x 140 x 227	9.45 x 5.51 x 8.94	0.00390513986
22R	229 x 175 x 211	9.02 x 6.89 x 8.31	0.00445749713
Group 24	260 x 173 x 225	10.24 x 6.81 x 8.86	0.00598696500
24F	273 x 173 x 229	10.75 x 6.81 x 9.02	0.00642073413
24H	260 x 173 x 238	10.24 x 6.81 x 9.37	0.00693144800
24R	260 x 173 x 229	10.24 x 6.81 x 9.02	0.00642073413
24T	260 x 173 x 248	10.24 x 6.81 x 9.76	0.00754501184
25	230 x 175 x 225	9.06 x 6.89 x 8.86	0.00524355450
Group 26	208 x 173 x 197	8.19 x 6.81 x 7.76	0.00353679292
Group 26R	208 x 173 x 197	8.19 x 6.81 x 7.76	0.00353679292
Group 27	306 x 173 x 225	12.05 x 6.81 x 8.86	0.00721795525
27F	318 x 173 x 227	12.52 x 6.81 x 8.94	0.00760644714
27H	298 x 173 x 235	11.73 x 6.81 x 9.25	0.00720434640
29NF	330 x 140 x 227	12.99 x 5.51 x 8.94	0.00568620726
33	338 x 173 x 238	13.31 x 6.81 x 9.37	0.00858591224
Group 34	260 x 173 x 200	10.24 x 6.81 x 7.87	0.00550277520
Group 34R	260 x 173 x 200	10.24 x 6.81 x 7.87	0.00550277520
Group 35	230 x 175 x 225	9.06 x 6.89 x 8.86	0.00524355450
36R	263 x 183 x 206	10.35 x 7.20 x 8.11	0.00561068878
40R	278 x 175 x 175	10.94 x 6.89 x 6.89	0.00441725075
41	293 x 175 x 175	11.54 x 6.89 x 6.89	0.00505510650
42	242 x 175 x 175	9.53 x 6.89 x 6.89	0.00376838087
43	334 x 175 x 205	13.15 x 6.89 x 8.07	0.00824337587
45	240 x 140 x 227	9.45 x 5.51 x 8.94	0.00390513986
46	273 x 173 x 229	10.75 x 6.81 x 9.02	0.00642073413
Group 47	242 x 175 x 190	9.53 x 6.89 x 7.48	0.00395249000
Group 48	278 x 175 x 190	10.94 x 6.89 x 7.48	0.00581518600
Group 49	354 x 175 x 190	13.94 x 6.89 x 7.48	0.00733720800
50	343 x 127 x 254	13.50 x 5.00 x 10.00	0.00854293200
Group 51	238 x 129 x 223	9.37 x 5.08 x 8.78	0.00486167804
Group 51R	238 x 129 x 223	9.37 x 5.08 x 8.78	0.00486167804
52	186 x 147 x 210	7.32 x 5.79 x 8.27	0.00350653680
53	330 x 119 x 210	13.00 x 4.69 x 8.27	0.00385902820
54	186 x 154 x 212	7.32 x 6.06 x 8.35	0.00379697126
55	218 x 154 x 212	8.58 x 6.06 x 8.35	0.00415005372
56	254 x 154 x 212	10.00 x 6.06 x 8.35	0.00455001176
57	205 x 183 x 177	8.07 x 7.20 x 6.97	0.00419243965
Group 58	255 x 183 x 177	10.04 x 7.20 x 6.97	0.00419696552
Group 58R	255 x 183 x 177	10.04 x 7.20 x 6.97	0.00419696552
59	255 x 193 x 196	10.04 x 7.60 x 7.72	0.00487823520
60	332 x 160 x 225	13.07 x 6.30 x 8.86	0.00715049400
61	192 x 162 x 225	7.56 x 6.38 x 8.86	0.00385345125
62	225 x 162 x 225	8.86 x 6.38 x 8.86	0.00423795525
63	258 x 162 x 225	10.16 x 6.38 x 8.86	0.00517247950
64	296 x 162 x 225	11.65 x 6.38 x 8.86	0.00684753950
Group 65	306 x 192 x 192	12.05 x 7.56 x 7.56	0.00654091552
66	306 x 192 x 194	12.05 x 7.56 x 7.64	0.00658058864
67R	231 x 175 x 176	9.09 x 6.89 x 6.93	0.00369298394
70	208 x 179 x 186	8.19 x 7.05 x 7.32	0.00455980864
71	208 x 179 x 216	8.19 x 7.05 x 8.50	0.00578993800
72	230 x 179 x 210	9.06 x 7.05 x 8.27	0.00551168110
73	230 x 179 x 216	9.06 x 7.05 x 8.50	0.00595744800
74	260 x 184 x 222	10.24 x 7.24 x 8.74	0.00761221408
Group 75	230 x 179 x 186	9.06 x 7.05 x 7.32	0.00483792816
76	334 x 179 x 216	13.15 x 7.05 x 8.50	0.01000872000
77	306 x 184 x 222	12.05 x 7.24 x 8.74	0.00842506300
Group 78	260 x 179 x 186	10.24 x 7.05 x 7.32	0.00516115520
79	307 x 179 x 188	12.09 x 7.05 x 7.40	0.00537491120
Group 85	230 x 173 x 203	9.06 x 6.81 x 7.99	0.00486222594
Group 86	230 x 173 x 203	9.06 x 6.81 x 7.99	0.00486222594
90	243 x 175 x 175	9.57 x 6.89 x 6.89	0.00379176325
91	280 x 175 x 175	11.02 x 6.89 x 6.89	0.00509001750
92	316 x 175 x 175	12.44 x 6.89 x 6.89	0.00599487500
93	354 x 175 x 175	13.94 x 6.89 x 6.89	0.00788639375
Group 94R	315 x 175 x 190	12.40 x 6.89 x 7.48	0.00675875000
Group 95R	394 x 175 x 190	15.51 x 6.89 x 7.48	0.00891808125
Group 96R	242 x 175 x 175	9.53 x 6.89 x 7.48	0.00422529250
97R	252 x 175 x 190	9.92 x 6.89 x 7.48	0.00454480375
98R	283 x 175 x 190	11.14 x 6.89 x 7.48	0.00578242625
99	207 x 175 x 175	8.15 x 6.89 x 6.89	0.00359341125
99R	210 x 175 x 175	8.27 x 6.89 x 6.89	0.00364715875
100	260 x 179 x 188	10.24 x 7.05 x 7.40	0.00511193600
101	260 x 179 x 170	10.24 x 7.05 x 6.69	0.00474600960
121R	208 x 177 x 215	8.19 x 6.97 x 8.46	0.00392694708
124	265 x 175 x 214	10.43 x 6.89 x 8.43	0.00582720023
124R	262 x 177 x 218	10.31 x 6.97 x 8.58	0.00596407024
151R	188 x 125 x 225	7.40 x 4.92 x 8.86	0.00328940000
1	232 x 181 x 238	9.13 x 7.13 x 9.37	0.00439942256
2	264 x 181 x 238	10.39 x 7.13 x 9.37	0.00511829864
2E	492 x 105 x 232	19.37 x 4.13 x 9.13	0.00866126576
2N	254 x 141 x 227	10.00 x 5.55 x 8.94	0.00499256240
17HF	187 x 175 x 229	7.36 x 6.89 x 8.97	0.00380640988
19L	216 x 178 x 191	8.50 x 7.01 x 7.52	0.00296550416
3EE	491 x 111 x 225	19.33 x 4.37 x 8.86	0.00913801575
3ET	491 x 111 x 249	19.33 x 4.37 x 9.80	0.01019370825
Group 4D	527 x 222 x 250	20.75 x 8.74 x 9.84	0.04594772500
4DLT	508 x 208 x 202	20.00 x 8.19 x 7.95	0.03405899500
Group 6D	527 x 254 x 260	20.75 x 10.00 x 10.24	0.05369534000
Group 8D	527 x 283 x 250	20.75 x 11.14 x 9.84	0.05895497500
12T	179 x 177 x 202	7.05 x 6.97 x 7.95	0.00297095643
28	261 x 173 x 240	10.28 x 6.81 x 9.45	0.00636117320
29H	334 x 171 x 232	13.15 x 6.73 x 9.13	0.00820240768
30H	343 x 173 x 235	13.50 x 6.81 x 9.25	0.00849755375
Group 31	330 x 173 x 240	12.99 x 6.81 x 9.45	0.00841162350
3	298 x 181 x 238	11.73 x 7.13 x 9.37	0.00784090538
3EH	491 x 111 x 249	19.33 x 4.37 x 9.80	0.01019370825
4	334 x 181 x 238	13.15 x 7.13 x 9.37	0.00898898188
4EH	491 x 127 x 249	19.33 x 5.00 x 9.80	0.01098036675
5	394 x 181 x 238	15.51 x 7.13 x 9.37	0.01171429038
8A27	495 x 190 x 220	19.49 x 7.48 x 8.66	0.01540740000
8A27M	495 x 190 x 220	19.49 x 7.48 x 8.66	0.01540740000
8A31DTM	508 x 190 x 220	20.00 x 7.48 x 8.66	0.01640720000
8A31DTM	508 x 190 x 220	20.00 x 7.48 x 8.66	0.01640720000
8A31STDM	508 x 190 x 220	20.00 x 7.48 x 8.66	0.01640720000
Group 9A34	259 x 173 x 235	10.20 x 6.81 x 9.25	0.00536678350
9A65B	325 x 173 x 235	12.80 x 6.81 x 9.25	0.00743773125
Group 9A78	354 x 173 x 235	13.94 x 6.81 x 9.25	0.00853236925
Group 9AGM	329 x 172 x 225	12.95 x 6.77 x 8.86	0.00687609550
DP24	260 x 173 x 229	10.24 x 6.81 x 9.02	0.00642073413
DP27	330 x 173 x 235	12.99 x 6.81 x 9.25	0.00743773125
DP31	330 x 173 x 240	12.99 x 6.81 x 9.45	0.00770216400
Group DP31	330 x 173 x 240	12.99 x 6.81 x 9.45	0.00770216400

Is Group Size a fixed value?

No, the actual BCI Group Size can vary slightly between manufacturers and models, and generally, this is a range value rather than an exact value.

What is a Group24 battery?

The usual size of Group24 is 260173225mm (10.24*6.81*8.86ft), and the volume is generally 0.0060m³. It is usually used to manufacture 12V 100Ah 24V 50Ah lithium-ion battery packs. Typical application scenarios are RVs, backup power supplies, and home storage. Yes, batteries of this size are commonly used for energy storage. If it needs to be used as a motor, a supercapacitor can be installed.

What is a Group27 battery?

The usual size of Group 27 is 306173225mm (12.05*6.81*8.86ft), and the volume is generally 0.0072m³. It is usually used to manufacture 12V 100Ah and 12V 150Ah lithium-ion battery packs. Typical application scenarios are RVs, backup power supplies, and home storage. Can wait because the size is not much different. The overall application scenario is similar to Group24.

What do Group24 and Group27 batteries have in common?

As mentioned above, Group Size can only be used to standardize the size. As for what technology is used to manufacture battery packs of this size, there is no precise regulation. Therefore, we can use various technologies to manufacture:

Polymer lithium-ion material
Sodium ion material
gel material
Gel-cell material
Flooded material
Lithium-ion materials

What is the difference between Group24 and Group27 batteries?

The size difference between these two models is not big, and both can now be used to make lithium-ion batteries. The capacity gap is about 50Ah, and usually the voltage includes 12V, 24V or even 36V

How do you choose the Group Size that suits you?

You may feel confused by so many Group Sizes, but in fact, there is no need for them. Because generally, we must choose the smallest battery that can be manufactured. So you only have to think about one thing: what will you use the battery for? What space budget do you have? After understanding this, you only need to choose a Group Size that does not exceed your planned size.

Can I interchange Group24 and Group27 batteries?

Of course, it depends on your needs. But generally, most people will choose the smallest one. As a simple example, if you need a 12V 100Ah battery pack and you find there are two sizes, Group 24 and Group 27, or even Group 31, then how do you choose? Of course, you can choose both, but does choosing a smaller battery mean that your limited space can accommodate more capacity?

The smaller the Group size, the better, or the larger the better?

This issue should be looked at separately. If you have a specific capacity requirement, then in general, the smaller the Group Size, the better. However, the energy density of the battery pack has a limit. If you need a larger capacity, a smaller size often cannot satisfy it. In this case, you can only choose a battery with a larger Group Size.

Author Profile

Thomas Chen

Thomas Chen is a seasoned expert in the new energy industry, with a focus on lithium battery technology. A Shenzhen University alumnus, class of 2010, Thomas has cultivated a wealth of experience through pivotal roles at EVE and BYD. Renowned for his profound insights into the sector, he possesses a unique aptitude for identifying market trends and understanding customer needs. His articles offer a distinctive perspective, drawn from a rich background in the field.

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Introduction:

What is ‘Group Size’? Who came up with it?

Why is it so rare to hear the term Group Size nowadays?

Complete Group Size List:

Model	Size（mm）	Size（inches）	Space（m³）
21	208 x 173 x 222	8.19 x 6.81 x 8.74	0.00389502388
21R	208 x 173 x 222	8.19 x 6.81 x 8.74	0.00389502388
22F	241 x 175 x 211	9.49 x 6.89 x 8.31	0.00483441375
22HF	241 x 175 x 229	9.49 x 6.89 x 9.02	0.00530067175
Group 22NF	240 x 140 x 227	9.45 x 5.51 x 8.94	0.00390513986
22R	229 x 175 x 211	9.02 x 6.89 x 8.31	0.00445749713
Group 24	260 x 173 x 225	10.24 x 6.81 x 8.86	0.00598696500
24F	273 x 173 x 229	10.75 x 6.81 x 9.02	0.00642073413
24H	260 x 173 x 238	10.24 x 6.81 x 9.37	0.00693144800
24R	260 x 173 x 229	10.24 x 6.81 x 9.02	0.00642073413
24T	260 x 173 x 248	10.24 x 6.81 x 9.76	0.00754501184
25	230 x 175 x 225	9.06 x 6.89 x 8.86	0.00524355450
Group 26	208 x 173 x 197	8.19 x 6.81 x 7.76	0.00353679292
Group 26R	208 x 173 x 197	8.19 x 6.81 x 7.76	0.00353679292
Group 27	306 x 173 x 225	12.05 x 6.81 x 8.86	0.00721795525
27F	318 x 173 x 227	12.52 x 6.81 x 8.94	0.00760644714
27H	298 x 173 x 235	11.73 x 6.81 x 9.25	0.00720434640
29NF	330 x 140 x 227	12.99 x 5.51 x 8.94	0.00568620726
33	338 x 173 x 238	13.31 x 6.81 x 9.37	0.00858591224
Group 34	260 x 173 x 200	10.24 x 6.81 x 7.87	0.00550277520
Group 34R	260 x 173 x 200	10.24 x 6.81 x 7.87	0.00550277520
Group 35	230 x 175 x 225	9.06 x 6.89 x 8.86	0.00524355450
36R	263 x 183 x 206	10.35 x 7.20 x 8.11	0.00561068878
40R	278 x 175 x 175	10.94 x 6.89 x 6.89	0.00441725075
41	293 x 175 x 175	11.54 x 6.89 x 6.89	0.00505510650
42	242 x 175 x 175	9.53 x 6.89 x 6.89	0.00376838087
43	334 x 175 x 205	13.15 x 6.89 x 8.07	0.00824337587
45	240 x 140 x 227	9.45 x 5.51 x 8.94	0.00390513986
46	273 x 173 x 229	10.75 x 6.81 x 9.02	0.00642073413
Group 47	242 x 175 x 190	9.53 x 6.89 x 7.48	0.00395249000
Group 48	278 x 175 x 190	10.94 x 6.89 x 7.48	0.00581518600
Group 49	354 x 175 x 190	13.94 x 6.89 x 7.48	0.00733720800
50	343 x 127 x 254	13.50 x 5.00 x 10.00	0.00854293200
Group 51	238 x 129 x 223	9.37 x 5.08 x 8.78	0.00486167804
Group 51R	238 x 129 x 223	9.37 x 5.08 x 8.78	0.00486167804
52	186 x 147 x 210	7.32 x 5.79 x 8.27	0.00350653680
53	330 x 119 x 210	13.00 x 4.69 x 8.27	0.00385902820
54	186 x 154 x 212	7.32 x 6.06 x 8.35	0.00379697126
55	218 x 154 x 212	8.58 x 6.06 x 8.35	0.00415005372
56	254 x 154 x 212	10.00 x 6.06 x 8.35	0.00455001176
57	205 x 183 x 177	8.07 x 7.20 x 6.97	0.00419243965
Group 58	255 x 183 x 177	10.04 x 7.20 x 6.97	0.00419696552
Group 58R	255 x 183 x 177	10.04 x 7.20 x 6.97	0.00419696552
59	255 x 193 x 196	10.04 x 7.60 x 7.72	0.00487823520
60	332 x 160 x 225	13.07 x 6.30 x 8.86	0.00715049400
61	192 x 162 x 225	7.56 x 6.38 x 8.86	0.00385345125
62	225 x 162 x 225	8.86 x 6.38 x 8.86	0.00423795525
63	258 x 162 x 225	10.16 x 6.38 x 8.86	0.00517247950
64	296 x 162 x 225	11.65 x 6.38 x 8.86	0.00684753950
Group 65	306 x 192 x 192	12.05 x 7.56 x 7.56	0.00654091552
66	306 x 192 x 194	12.05 x 7.56 x 7.64	0.00658058864
67R	231 x 175 x 176	9.09 x 6.89 x 6.93	0.00369298394
70	208 x 179 x 186	8.19 x 7.05 x 7.32	0.00455980864
71	208 x 179 x 216	8.19 x 7.05 x 8.50	0.00578993800
72	230 x 179 x 210	9.06 x 7.05 x 8.27	0.00551168110
73	230 x 179 x 216	9.06 x 7.05 x 8.50	0.00595744800
74	260 x 184 x 222	10.24 x 7.24 x 8.74	0.00761221408
Group 75	230 x 179 x 186	9.06 x 7.05 x 7.32	0.00483792816
76	334 x 179 x 216	13.15 x 7.05 x 8.50	0.01000872000
77	306 x 184 x 222	12.05 x 7.24 x 8.74	0.00842506300
Group 78	260 x 179 x 186	10.24 x 7.05 x 7.32	0.00516115520
79	307 x 179 x 188	12.09 x 7.05 x 7.40	0.00537491120
Group 85	230 x 173 x 203	9.06 x 6.81 x 7.99	0.00486222594
Group 86	230 x 173 x 203	9.06 x 6.81 x 7.99	0.00486222594
90	243 x 175 x 175	9.57 x 6.89 x 6.89	0.00379176325
91	280 x 175 x 175	11.02 x 6.89 x 6.89	0.00509001750
92	316 x 175 x 175	12.44 x 6.89 x 6.89	0.00599487500
93	354 x 175 x 175	13.94 x 6.89 x 6.89	0.00788639375
Group 94R	315 x 175 x 190	12.40 x 6.89 x 7.48	0.00675875000
Group 95R	394 x 175 x 190	15.51 x 6.89 x 7.48	0.00891808125
Group 96R	242 x 175 x 175	9.53 x 6.89 x 7.48	0.00422529250
97R	252 x 175 x 190	9.92 x 6.89 x 7.48	0.00454480375
98R	283 x 175 x 190	11.14 x 6.89 x 7.48	0.00578242625
99	207 x 175 x 175	8.15 x 6.89 x 6.89	0.00359341125
99R	210 x 175 x 175	8.27 x 6.89 x 6.89	0.00364715875
100	260 x 179 x 188	10.24 x 7.05 x 7.40	0.00511193600
101	260 x 179 x 170	10.24 x 7.05 x 6.69	0.00474600960
121R	208 x 177 x 215	8.19 x 6.97 x 8.46	0.00392694708
124	265 x 175 x 214	10.43 x 6.89 x 8.43	0.00582720023
124R	262 x 177 x 218	10.31 x 6.97 x 8.58	0.00596407024
151R	188 x 125 x 225	7.40 x 4.92 x 8.86	0.00328940000
1	232 x 181 x 238	9.13 x 7.13 x 9.37	0.00439942256
2	264 x 181 x 238	10.39 x 7.13 x 9.37	0.00511829864
2E	492 x 105 x 232	19.37 x 4.13 x 9.13	0.00866126576
2N	254 x 141 x 227	10.00 x 5.55 x 8.94	0.00499256240
17HF	187 x 175 x 229	7.36 x 6.89 x 8.97	0.00380640988
19L	216 x 178 x 191	8.50 x 7.01 x 7.52	0.00296550416
3EE	491 x 111 x 225	19.33 x 4.37 x 8.86	0.00913801575
3ET	491 x 111 x 249	19.33 x 4.37 x 9.80	0.01019370825
Group 4D	527 x 222 x 250	20.75 x 8.74 x 9.84	0.04594772500
4DLT	508 x 208 x 202	20.00 x 8.19 x 7.95	0.03405899500
Group 6D	527 x 254 x 260	20.75 x 10.00 x 10.24	0.05369534000
Group 8D	527 x 283 x 250	20.75 x 11.14 x 9.84	0.05895497500
12T	179 x 177 x 202	7.05 x 6.97 x 7.95	0.00297095643
28	261 x 173 x 240	10.28 x 6.81 x 9.45	0.00636117320
29H	334 x 171 x 232	13.15 x 6.73 x 9.13	0.00820240768
30H	343 x 173 x 235	13.50 x 6.81 x 9.25	0.00849755375
Group 31	330 x 173 x 240	12.99 x 6.81 x 9.45	0.00841162350
3	298 x 181 x 238	11.73 x 7.13 x 9.37	0.00784090538
3EH	491 x 111 x 249	19.33 x 4.37 x 9.80	0.01019370825
4	334 x 181 x 238	13.15 x 7.13 x 9.37	0.00898898188
4EH	491 x 127 x 249	19.33 x 5.00 x 9.80	0.01098036675
5	394 x 181 x 238	15.51 x 7.13 x 9.37	0.01171429038
8A27	495 x 190 x 220	19.49 x 7.48 x 8.66	0.01540740000
8A27M	495 x 190 x 220	19.49 x 7.48 x 8.66	0.01540740000
8A31DTM	508 x 190 x 220	20.00 x 7.48 x 8.66	0.01640720000
8A31DTM	508 x 190 x 220	20.00 x 7.48 x 8.66	0.01640720000
8A31STDM	508 x 190 x 220	20.00 x 7.48 x 8.66	0.01640720000
Group 9A34	259 x 173 x 235	10.20 x 6.81 x 9.25	0.00536678350
9A65B	325 x 173 x 235	12.80 x 6.81 x 9.25	0.00743773125
Group 9A78	354 x 173 x 235	13.94 x 6.81 x 9.25	0.00853236925
Group 9AGM	329 x 172 x 225	12.95 x 6.77 x 8.86	0.00687609550
DP24	260 x 173 x 229	10.24 x 6.81 x 9.02	0.00642073413
DP27	330 x 173 x 235	12.99 x 6.81 x 9.25	0.00743773125
DP31	330 x 173 x 240	12.99 x 6.81 x 9.45	0.00770216400
Group DP31	330 x 173 x 240	12.99 x 6.81 x 9.45	0.00770216400

Is Group Size a fixed value?

No, the actual BCI Group Size can vary slightly between manufacturers and models, and generally, this is a range value rather than an exact value.

What is a Group24 battery?

What is a Group27 battery?

What do Group24 and Group27 batteries have in common?

Polymer lithium-ion material
Sodium ion material
gel material
Gel-cell material
Flooded material
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What is the difference between Group24 and Group27 batteries?

The size difference between these two models is not big, and both can now be used to make lithium-ion batteries. The capacity gap is about 50Ah, and usually the voltage includes 12V, 24V or even 36V

How do you choose the Group Size that suits you?

Can I interchange Group24 and Group27 batteries?

The smaller the Group size, the better, or the larger the better?

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Thomas Chen

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BCI Group Size: Group24 Battery VS Group 27 Battery

Introduction:

What is ‘Group Size’? Who came up with it?

Why is it so rare to hear the term Group Size nowadays?

Complete Group Size List:

Is Group Size a fixed value?

What is a Group24 battery?

What is a Group27 battery?

What do Group24 and Group27 batteries have in common?

What is the difference between Group24 and Group27 batteries?

How do you choose the Group Size that suits you?

Can I interchange Group24 and Group27 batteries?

The smaller the Group size, the better, or the larger the better?

Author Profile

Thomas Chen

Leave the first comment (Cancel Reply)

Introduction:

What is ‘Group Size’? Who came up with it?

Why is it so rare to hear the term Group Size nowadays?

Complete Group Size List:

Is Group Size a fixed value?

What is a Group24 battery?

What is a Group27 battery?

What do Group24 and Group27 batteries have in common?

What is the difference between Group24 and Group27 batteries?

How do you choose the Group Size that suits you?

Can I interchange Group24 and Group27 batteries?

The smaller the Group size, the better, or the larger the better?

Author Profile

Thomas Chen

Leave the first comment (Cancel Reply)

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