What is a Group 26 Battery: Technical Information and Comparison with Alternatives

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 Cold Cranking Amps (CCA): 525, Battery Group: 26 Type: Lead-Acid Warranty: 12 months Check Price

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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 Cold Cranking Amps (CCA): 540, Reserve Capacity (RC): 80, Battery Group: 26R Type: Lead-Acid Warranty: 24 months Check Price	Check Price
Good Choice	EverStart Value Lead Acid Automotive Battery, Group Size 26R Cold Cranking Amps (CCA): 540, Battery Group: 26R Type: Lead-Acid Warranty: 12 months Check Price	Check Price
Good Choice	Duracell Automotive Battery - Group Size 26R Cold Cranking Amps (CCA): 540, Reserve Capacity (RC): 80, Battery Group: 26R Type: Lead-Acid Warranty: 36 months Check Price	Check Price
Good Choice	SPRINTER 12-Volt S26R Battery Cold Cranking Amps (CCA): 550, Reserve Capacity (RC): 85, Battery Group: 26R Type: Lead-Acid Warranty: 24 months Check Price	Check Price
Good Choice	Exide Titan 12 volts Lead Acid 6-Cell 26R Group Size 540 Cold Cranking Amps (BCI) Battery Cold Cranking Amps (CCA): 540, Reserve Capacity (RC): 80, Battery Group: 26R Type: Lead-Acid Warranty: 24 months Check Price	Check Price
Good Choice	DieHard Silver Battery, Group Size 26R, 575 CCA Cold Cranking Amps (CCA): 575, Reserve Capacity (RC): 81, Battery Group: 26R Type: Lead-Acid Warranty: 24 months Check Price	Check Price
Good Choice	Generac 5819 Model 26R Wet Cell Battery For All Air-cooled Standby Generators Cold Cranking Amps (CCA): 525, Battery Group: 26R Type: Lead-Acid Warranty: 12 months Check Price	Check Price

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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