What is a Group 902 Battery: Technical Information and Comparison with Alternatives

Group 902 Battery Dimensions

Battery Design

Dimensions and Sizes (Length x Width x Height)
12'' x 7.125'' x 14.625'' Inches 302 x 181 x 371 Millimeters

Group 902 Battery Post Terminals

Post Terminal Types and Locations	Posts Used
	Type "A", "L", "LPT", "HPT", "UT", "LT" or manufacturer's custom post design

Group 902 Battery Voltage and Current Characteristics

Volts	Cells	CCA
6	3

Group 902 Alternatives and Closest Battery Groups by Dimensions

There are no direct interchangeable alternatives for group 902 battery if we speak about dimensions, but if your battery space hasn't strict limits, you can choose a little bigger or smaller battery group. If your battery compartment cannot accommodate a larger battery, you can choose a smaller one. In both cases, you must securely fasten your new battery with a battery holder. If your battery holder can't hold the alternative battery group, you can buy a universal battery holder to fit in different types of batteries.

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 902 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 902 Battery	12'' x 7.125'' x 14.625'' in. 302 x 181 x 371 mm		6	3	"A", "L", "LPT", "HPT", "UT", "LT"
Group 903 Battery	12'' x 7.125'' x 17'' in. 302 x 181 x 432 mm		6	3	"A", "L", "LPT", "HPT", "UT", "LT"

Closest but not Identical Size Battery Groups

Battery groups in this section below are not identical to the group 902 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 902 group.

Battery Group Number	Dimensions	Shape	Volts	Cells	Post Terminal Type
Group 902 Battery	12'' x 7.125'' x 14.625'' in. 302 x 181 x 371 mm		6	3	"A", "L", "LPT", "HPT", "UT", "LT"
Group 901 Battery	11.75'' x 7.125'' x 11.875'' in. 298 x 181 x 302 mm		6	3	"A", "L", "LPT", "HPT", "UT", "LT"
Group 3 Battery	11.75'' x 7.125'' x 9.375'' in. 298 x 181 x 238 mm		6	3	"A"
Group 2 Battery	10.375'' x 7.125'' x 9.375'' in. 264 x 181 x 238 mm		6	3	"A"
Group 2N Battery	10'' x 5.5625'' x 8.9375'' in. 254 x 141 x 227 mm		6	3	"A"
Group 1 Battery	9.125'' x 7.125'' x 9.375'' in. 232 x 181 x 238 mm		6	3	"A"

Closest Large Dimensions

Bigger batteries can have more capacity and power compared to 902 batteries.

Battery Group Number	Dimensions	Shape	Volts	Cells	Post Terminal Type
Group 902 Battery	12'' x 7.125'' x 14.625'' in. 302 x 181 x 371 mm		6	3	"A", "L", "LPT", "HPT", "UT", "LT"
Group 4 Battery	13.125'' x 7.125'' x 9.375'' in. 334 x 181 x 238 mm		6	3	"A"
Group 5D Battery	13.75'' x 7.125'' x 9.375'' in. 349 x 181 x 238 mm		6	3	"A"
Group 7D Battery	16.25'' x 7.125'' x 9.375'' in. 413 x 181 x 238 mm		6	3	"A"

How to Get 12 Volts from 6V of a 902 Battery Group

If you need 12 Volts, you can connect two group 902 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 6V lead-acid battery is connected to another 6V lead-acid battery, you have 12V 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 902 Batteries with a Parallel Connection

If you need to increase current capacity and reduce charging time, connect batteries in parallel. When group 902 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 6V lead-acid batteries with 30 Ah capacity and you connect them in parallel, you'll get 6 Volts with 60 Ah.

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