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Group 34R Battery

Aliases: 34R · 34 (reversed terminal) · Standard family: BCI/SAE

Direct answer: The Group 34R battery is a BCI/SAE-family group — a 12V lead-acid case of 260 × 173 × 200 mm with Top post (reversed polarity) terminals, typically 55–75 Ah and 750–900 cold cranking amps (SAE J537 (−18°C)).

Quick facts

Identification

Entity type	BatteryGroup
Entity ID	`WBH-BAT-GROUP-34R`
Group name	Group 34R
Aliases	34R / 34 (reversed terminal)
Standard family	BCI/SAE

Specification

Voltage	12V	Standard-defined
Typical capacity	55–75 Ah	World Battery Hub derived — cross-source range
Typical CCA	750–900 A	World Battery Hub derived — cross-source range
Dimensions (L×W×H)	260 × 173 × 200 mm	Standard-defined
Terminal	Top post (reversed polarity)	Standard-defined
Typical weight	17–20 kg	World Battery Hub derived — cross-source range

Value types — Standard-defined: fixed by the group standard (voltage, dimensions, terminal); Manufacturer-reported: a representative value from manufacturer datasheets; World Battery Hub derived: a cross-source range aggregated by World Battery Hub from manufacturer datasheets. None is a substitute for a specific battery's datasheet.

Standards & measurement context

Naming standard	BCI/SAE
CCA basis	SAE J537 (−18°C)

The CCA figure is defined by its test standard — values from different standards are not directly interchangeable. Capacity values are typical ranges, not a substitute for a specific battery's datasheet.

Applications

Trucks
SUVs
High-power automotive

Technology variants

Flooded / AGM — see the lead-acid type family for the design trade-offs behind the label.

Equivalent capacity class

~55–65 Ah — other groups in a similar capacity class. This is a capacity comparison, not a physical interchange: dimensions and terminals differ between naming families.

Testing

Relevant methods for this group: CCA testing, capacity testing, load testing — see the testing methods for procedures and standards.

Sources & verification

CCA 750–900 A — SAE J537 (−18°C)

Evidence card — how this entity's data was established

Basis: BCI group dimension tables + manufacturer datasheets

BCI Battery Replacement Data Book (group dimensions)
Manufacturer datasheets (East Penn, Exide, Interstate, Odyssey)

Confidence: High · Last verified: 2026-09

Same case as Group 34 but with REVERSED terminal polarity (positive post on the opposite side). Dimensions match Group 34; the 'R' suffix denotes reversal, not a size difference. Not interchangeable with Group 34 without checking cable routing.

Last verified: 2026-09

Values are cross-verified typical ranges, not a substitute for a specific battery's datasheet. Return to World Battery Hub.