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Group 78 Battery

Aliases: 78 · Standard family: BCI/SAE

Direct answer: The Group 78 battery is a BCI/SAE-family group — a 12V lead-acid case of 260 × 175 × 185 mm with SAE side terminals, typically 55–65 Ah and 700–800 cold cranking amps (SAE J537 (−18°C)).

Quick facts

12V 55–65 Ah 700–800 CCA 260 × 175 × 185 mm

Identification

Entity typeBatteryGroup
Group nameGroup 78
Aliases78
Standard familyBCI/SAE

Specification

Voltage12V
Typical capacity55–65 Ah
Typical CCA700–800 A
Dimensions (L×W×H)260 × 175 × 185 mm
TerminalSAE side
Typical weight17–19 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 / EFB / 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.

Group 25Group 35H4H555D2365D23Group 34

Testing

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

Sources & verification

CCA 700–800 A — SAE J537 (−18°C)

Evidence card — how this entity's data was established

Basis: BCI group reference tables + manufacturer datasheets

Confidence: High · Last verified: 2026-09

Typical values — specific builds vary by manufacturer within the group envelope.

Last verified: 2026-09

Related

Group sizes explained What is CCA CCA reference Dimensions & terminals Plate & grid design CCA testing

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