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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 typeBatteryGroup
Group nameGroup 34R
Aliases34R / 34 (reversed terminal)
Standard familyBCI/SAE

Specification

Voltage12V
Typical capacity55–75 Ah
Typical CCA750–900 A
Dimensions (L×W×H)260 × 173 × 200 mm
TerminalTop post (reversed polarity)
Typical weight17–20 kg

Standards & measurement context

Naming standardBCI/SAE
CCA basisSAE 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

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

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

Related

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