Last updated on by Eric Strong
Group 26 Battery Dimensions
| Battery Design |
|---|
 |
| Dimensions and Sizes (Length x Width x Height) |
|---|
| 8.1875'' x 6.8125'' x 7.75'' Inches 208 x 173 x 197 Millimeters |
Group 26 Battery Post Terminals
| Post Terminal Types and Locations | Posts Used |
|---|---|
 | Type "A", "A2" or manufacturer's custom post design |
Group 26 Battery Voltage and Current Characteristics
| Volts | Cells | CCA Range |
|---|---|---|
| 12 | 6 | 245-800 |
Best Group 26 Batteries
List of recommended batteries
Good Choice  | EverStart Value Lead Acid Automotive Battery, Group Size 26
| Check Price |
Equivalents with the Reverse Polarity
Batteries in this section have identical sizes and a positive post terminal on the opposite RIGHT side.
Good Choice  | SLI26R Duracell Ultra Flooded 540CCA BCI Group 26R Car and Truck Battery
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Good Choice  | EverStart Value Lead Acid Automotive Battery, Group Size 26R
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Good Choice  | Duracell Automotive Battery - Group Size 26R
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Good Choice  | SPRINTER 12-Volt S26R Battery
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Good Choice  | Exide Titan 12 volts Lead Acid 6-Cell 26R Group Size 540 Cold Cranking Amps (BCI) Battery
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Good Choice  | DieHard Silver Battery, Group Size 26R, 575 CCA
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Good Choice  | Generac 5819 Model 26R Wet Cell Battery For All Air-cooled Standby Generators
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Group 26 Alternatives and Closest Battery Groups by Dimensions
Interchangeable Battery Groups for 26 Battery
These groups have the same dimensions and performance but can have different terminal post types, post locations, and polarity.
| Battery Group Number | Dimensions | Shape | Volts | Cells | Post Terminal Type |
|---|---|---|---|---|---|
| Group 26 Battery | 8.1875'' x 6.8125'' x 7.75'' in. 208 x 173 x 197 mm | | 12 | 6 | "A", "A2" |
| Group 26R Battery | 8.1875'' x 6.8125'' x 7.75'' in. 208 x 173 x 197 mm Positive post on the Right |  | 12 | 6 | "A" |
Similar Battery Groups With the Same Length, Width and Voltage
These dimensions will fit you in 99% of cases when you want to use a different battery group instead of a 26 battery since most battery compartments have a height margin and strict limitations on height and width only, which match batteries in the table below. Please check the battery compartment before you buy a battery from this group.
| Battery Group Number | Dimensions | Shape | Volts | Cells | Post Terminal Type |
|---|---|---|---|---|---|
| Group 26 Battery | 8.1875'' x 6.8125'' x 7.75'' in. 208 x 173 x 197 mm | | 12 | 6 | "A", "A2" |
| Group 21 Battery | 8.1875'' x 6.8125'' x 8.75'' in. 208 x 173 x 222 mm | | 12 | 6 | "A", "A2" |
| Group 21R Battery | 8.1875'' x 6.8125'' x 8.75'' in. 208 x 173 x 222 mm Positive post on the Right | | 12 | 6 | "A", "A2" |
Closest but not Identical Size Battery Groups
Battery groups in this section below are not identical to the group 26 battery, they can be a little bigger or smaller. Please pay attention to the post terminal types and their location
Closest Groups that Have Slightly Smaller Dimensions
Smaller batteries can have less capacity, performance, and power in comparison with 26 group.
| Battery Group Number | Dimensions | Shape | Volts | Cells | Post Terminal Type |
|---|---|---|---|---|---|
| Group 26 Battery | 8.1875'' x 6.8125'' x 7.75'' in. 208 x 173 x 197 mm | | 12 | 6 | "A", "A2" |
| Group 61 Battery | 7.5625'' x 6.375'' x 8.875'' in. 192 x 162 x 225 mm |  | 12 | 6 | "A" |
| Group 54 Battery | 7.3125'' x 6.0625'' x 8.375'' in. 186 x 154 x 212 mm |  | 12 | 6 | "A" |
| Group U1R Battery | 7.75'' x 5.1875'' x 7.3125'' in. 197 x 132 x 186 mm Positive post on the Right | | 12 | 6 | "X" |
| Group U1 Battery | 7.75'' x 5.1875'' x 7.3125'' in. 197 x 132 x 186 mm | | 12 | 6 | "X" |
| Group 151R Battery | 7.4375'' x 4.9375'' x 8.875'' in. 188 x 125 x 225 mm Positive post on the Right |  | 12 | 6 | "A" |
| Group 52 Battery | 7.3125'' x 5.8125'' x 8.25'' in. 186 x 147 x 210 mm | | 12 | 6 | "A" |
Closest Large Dimensions
Bigger batteries can have more capacity and power compared to 26 batteries.
| Battery Group Number | Dimensions | Shape | Volts | Cells | Post Terminal Type |
|---|---|---|---|---|---|
| Group 26 Battery | 8.1875'' x 6.8125'' x 7.75'' in. 208 x 173 x 197 mm | | 12 | 6 | "A", "A2" |
| Group 70 Battery | 8.1875'' x 7.0625'' x 7.3125'' in. 208 x 180 x 186 mm |  | 12 | 6 | "S" |
| Group 71 Battery | 8.1875'' x 7.0625'' x 8.5'' in. 208 x 179 x 216 mm | | 12 | 6 | "S" |
| Group 121R Battery | 8.25'' x 7'' x 8.5'' in. 208 x 177 x 215 mm Positive post on the Right |  | 12 | 6 | "A" |
| Group 85 Battery | 9.0625'' x 6.8125'' x 8'' in. 230 x 173 x 203 mm | | 12 | 6 | "A" |
| Group 86 Battery | 9.0625'' x 6.8125'' x 8'' in. 230 x 173 x 203 mm | | 12 | 6 | "A" |
| Group 25 Battery | 9.0625'' x 6.9375'' x 8.875'' in. 230 x 175 x 225 mm | | 12 | 6 | "A", "A2" |
| Group 35 Battery | 9.0625'' x 6.9375'' x 8.875'' in. 230 x 175 x 225 mm | | 12 | 6 | "A", "A2" |
| Group 75 Battery | 9.0625'' x 7.0625'' x 7.3125'' in. 230 x 180 x 186 mm | | 12 | 6 | "S" |
| Group 72 Battery | 9.0625'' x 7.0625'' x 8.25'' in. 230 x 179 x 210 mm | | 12 | 6 | "S" |
| Group 73 Battery | 9.0625'' x 7.0625'' x 8.5'' in. 230 x 179 x 216 mm | | 12 | 6 | "S" |
| Group 67R Battery | 9.125'' x 6.9375'' x 6.9375'' in. 231 x 175 x 176 mm Positive post on the Right |  | 12 | 6 | "A" |
How to Get 24 Volts from 12V of a 26 Battery Group
If you need 24 Volts, you can connect two group 26 batteries in series to double the voltage. The voltage of a series connection is equal to the sum of the voltages of all its batteries. If one 12V lead-acid battery is connected to another 12V lead-acid battery, you have 24V total power output. Each battery must be fully charged and completely isolated from the other before connecting them in series, or there will be damage to at least one of them.
Increasing a Capacity of 26 Batteries with a Parallel Connection
If you need to increase current capacity and reduce charging time, connect batteries in parallel. When group 26 batteries are in parallel, their voltage is equal to the voltage of one battery, while current capacity equals to the sum of all its battery capacities. If you have two 12V lead-acid batteries with 60 Ah capacity and you connect them in parallel, you'll get 12 Volts with 120 Ah.
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