Group 51 Battery Dimensions
Battery Design |
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Dimensions and Sizes (Length x Width x Height) |
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9.375'' x 5.0625'' x 8.75'' Inches 238 x 129 x 223 Millimeters |
Group 51 Battery Post Terminals
Post Terminal Types and Locations | Posts Used |
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Type "A", "A2" or manufacturer's custom post design |
Group 51 Battery Voltage and Current Characteristics
Volts | Cells | CCA Range |
---|---|---|
12 | 6 | 270-500 |
Best Group 51 Batteries
List of recommended batteries
Good Choice
|
ACDelco Gold B24R Hybrid Vehicle AGM BCI Group 51 Battery
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Check Price |
Good Choice
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Optima Batteries 8071-167 D51 YellowTop Dual Purpose Battery
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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
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SLI51R Duracell Ultra BCI Group 51R Car and Truck Battery
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Good Choice
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Optima Batteries 8073-167 D51R YellowTop Dual Purpose Battery
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Check Price |
Good Choice
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EverStart Maxx Lead Acid Automotive Battery, Group Size 51R (12 Volt / 500 CCA)
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Check Price |
Good Choice
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Exide S51R Sprinter Classic 51R Battery 450 CCA
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Check Price |
Good Choice
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Megavolt Lead Acid Flooded Car Battery BCI 51R, 12V 55AH CCA500 CA525 (51R-60-500)
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Check Price |
Good Choice
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Duralast Gold Battery 51R-DLG Group Size 51R 500 CCA
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Group 51 Alternatives and Closest Battery Groups by Dimensions
Interchangeable Battery Groups for 51 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 51 Battery | 9.375'' x 5.0625'' x 8.75'' in. 238 x 129 x 223 mm |
12 | 6 | "A", "A2" | |
Group 51R Battery | 9.375'' x 5.0625'' x 8.75'' in. 238 x 129 x 223 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 51 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 51 group.
Battery Group Number | Dimensions | Shape | Volts | Cells | Post Terminal Type |
---|---|---|---|---|---|
Group 51 Battery | 9.375'' x 5.0625'' x 8.75'' in. 238 x 129 x 223 mm |
12 | 6 | "A", "A2" | |
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 400 Battery | 5.875'' x 3.4375'' x 5.625'' in. 150 x 88 x 143 mm |
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12 | 6 | "AuxTerminal" |
Group 401 Battery | 5.875'' x 3.4375'' x 5.125'' in. 150 x 88 x 130 mm |
|
12 | 6 | "AuxTerminal" |
Closest Large Dimensions
Bigger batteries can have more capacity and power compared to 51 batteries.
Battery Group Number | Dimensions | Shape | Volts | Cells | Post Terminal Type |
---|---|---|---|---|---|
Group 51 Battery | 9.375'' x 5.0625'' x 8.75'' in. 238 x 129 x 223 mm |
12 | 6 | "A", "A2" | |
Group 22NF Battery | 9.4375'' x 5.5'' x 8.9375'' in. 240 x 140 x 227 mm |
|
12 | 6 | "A", "A2" |
Group 45 Battery | 9.4375'' x 5.5'' x 8.9375'' in. 240 x 140 x 227 mm |
|
12 | 6 | "A", "A2" |
Group 2H Battery | 10.25'' x 5.3125'' x 8.9375'' in. 260 x 135 x 227 mm |
|
12 | 6 | "A" |
How to Get 24 Volts from 12V of a 51 Battery Group
If you need 24 Volts, you can connect two group 51 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 51 Batteries with a Parallel Connection
If you need to increase current capacity and reduce charging time, connect batteries in parallel. When group 51 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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