Group 40R Battery Dimensions
Battery of this group has the positive post terminal located on the right. It is marked with the letter "R" because this post terminal position is called Reverse Polarity of Battery. Most batteries have it on the left side. If you want the positive post terminal to be on the left, you can turn around the 40R battery and use it as a group 40 battery, because they have identical dimensions. This will allow you to use the positive post on the left. Make sure you have enough cable length to reach the terminals, because in the turned position the terminals can be located a little further.
Battery Design |
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Dimensions and Sizes (Length x Width x Height) |
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11'' x 6.9375'' x 6.9375'' Inches 278 x 175 x 175 Millimeters |
Group 40R Battery Post Terminals
Post Terminal Types and Locations | Posts Used |
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Type "A", "A1" or manufacturer's custom post design |
Group 40R Battery Voltage and Current Characteristics
Volts | Cells | CCA Range |
---|---|---|
12 | 6 | 550-650 |
Group 40R Alternatives and Closest Battery Groups by Dimensions
Interchangeable Battery Groups for 40R 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 40R Battery | 11'' x 6.9375'' x 6.9375'' in. 278 x 175 x 175 mm Positive post on the Right |
12 | 6 | "A", "A1" | |
Group 91 Battery | 11'' x 6.9375'' x 6.9375'' in. 278 x 175 x 175 mm |
|
12 | 6 | "A1", "A2" |
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 40R 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 40R Battery | 11'' x 6.9375'' x 6.9375'' in. 278 x 175 x 175 mm Positive post on the Right |
12 | 6 | "A", "A1" | |
Group 48 Battery | 11'' x 6.9375'' x 7.5'' in. 278 x 175 x 190 mm |
|
12 | 6 | "A", "A1", "A2" |
Closest but not Identical Size Battery Groups
Battery groups in this section below are not identical to the group 40R 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 40R group.
Battery Group Number | Dimensions | Shape | Volts | Cells | Post Terminal Type |
---|---|---|---|---|---|
Group 40R Battery | 11'' x 6.9375'' x 6.9375'' in. 278 x 175 x 175 mm Positive post on the Right |
12 | 6 | "A", "A1" | |
Group 124 Battery | 10.4375'' x 6.9375'' x 8.4375'' in. 265 x 175 x 214 mm |
|
12 | 6 | "A" |
Group 34R Battery | 10.25'' x 6.8125'' x 7.875'' in. 260 x 173 x 200 mm Positive post on the Right |
|
12 | 6 | "A" |
Group 34 Battery | 10.25'' x 6.8125'' x 7.875'' in. 260 x 173 x 200 mm |
|
12 | 6 | "A" |
Group 56 Battery | 10'' x 6.0625'' x 8.375'' in. 254 x 154 x 212 mm |
|
12 | 6 | "A" |
Group 97R Battery | 9.9375'' x 6.9375'' x 7.5'' in. 252 x 175 x 190 mm Positive post on the Right |
|
12 | 6 | "A1", "A2" |
Closest Large Dimensions
Bigger batteries can have more capacity and power compared to 40R batteries.
Battery Group Number | Dimensions | Shape | Volts | Cells | Post Terminal Type |
---|---|---|---|---|---|
Group 40R Battery | 11'' x 6.9375'' x 6.9375'' in. 278 x 175 x 175 mm Positive post on the Right |
12 | 6 | "A", "A1" | |
Group 98R Battery | 11.125'' x 6.9375'' x 7.5'' in. 283 x 175 x 190 mm Positive post on the Right |
|
12 | 6 | "A1", "A2" |
Group 41 Battery | 11.5625'' x 6.9375'' x 6.9375'' in. 293 x 175 x 175 mm |
|
12 | 6 | "A", "A1" |
Group 79 Battery | 12.0625'' x 7.0625'' x 7.375'' in. 307 x 179 x 188 mm |
|
12 | 6 | "S" |
Group 65 Battery | 12.0625'' x 7.5625'' x 7.5625'' in. 306 x 192 x 192 mm |
|
12 | 6 | "A" |
Group 66 Battery | 12.0625'' x 7.5625'' x 7.6875'' in. 306 x 192 x 194 mm |
|
12 | 6 | "A" |
Group 92 Battery | 12.4375'' x 6.9375'' x 6.9375'' in. 315 x 175 x 175 mm |
|
12 | 6 | "A1", "A2" |
Group 94R Battery | 12.4375'' x 6.9375'' x 7.5'' in. 315 x 175 x 190 mm Positive post on the Right |
|
12 | 6 | "A1", "A2" |
How to Get 24 Volts from 12V of a 40R Battery Group
If you need 24 Volts, you can connect two group 40R 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 40R Batteries with a Parallel Connection
If you need to increase current capacity and reduce charging time, connect batteries in parallel. When group 40R 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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Eric Strong works in the automotive repair industry more than 12 years. His work included repairing electrical systems in various vehicle systems. A hybrid electric car battery replacement experience expanded his understanding of automotive battery technology. Read More…
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