12V 28Ah 410CCA High Crank AGM Battery (HC28)

⚡ FULLRIVER HC28 12V 28AH HIGH CRANK AGM BATTERY

410CCA High-Performance Starting Battery – 925A PHCA, M8 Button Terminals & Heavy-Duty AGM Construction

🔥 Exceptional cranking power, ultra-low internal resistance and rugged AGM construction for demanding engine-starting applications.

The Fullriver HC28 is a high-performance 12V 28Ah High Crank AGM battery engineered for vehicles and equipment requiring serious starting power, rapid current delivery and dependable performance under demanding conditions.

Delivering 410CCA, 530A CA / MCA, 625A HCA and an impressive 925A pulse hot-cranking output, the HC28 provides substantial starting capability for compatible performance vehicles, 4WDs, off-road builds, marine engines, powersports equipment and motorsport applications.

High-compression cells, pure lead grids, advanced thin-plate technology and ultra-low 5.0mΩ internal resistance combine to deliver rapid energy transfer, while the heavy-duty flame-resistant ABS case supports operation in harsh and high-vibration environments.

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⚡ KEY FEATURES

🚀 410CCA High Cranking Output
Provides powerful cold-starting performance for compatible engines and demanding starting systems.

⚡ 530A CA / MCA
Delivers substantial cranking performance for compatible automotive and marine starting applications.

🔥 625A Hot Cranking Amps
Provides serious engine-starting capability under warmer operating conditions.

💥 925A Pulse Hot Cranking Amps
Delivers an intense short-duration current burst for high-demand ignition and starting requirements.

🔋 12V 28Ah AGM Battery
Combines useful stored capacity with high-current starting capability in a compact low-profile battery format.

⚡ Ultra-Low 5.0mΩ Internal Resistance
Supports rapid energy transfer and efficient high-current delivery to the starter system.

🏁 High-Compression Internal Construction
Designed to support strong current output and dependable performance in demanding vehicle environments.

🛡️ Non-Spillable AGM Design
Sealed construction provides clean, maintenance-free operation under normal conditions.

💪 Shock & Vibration Resistant
Heavy-duty construction is designed for performance, racing, off-road and high-vibration applications.

🧯 Flame-Resistant ABS Case
Durable ABS plastic housing with a UL94-HB flame-resistance rating.

🔧 M8 Button Terminals
Provides secure high-current electrical connections for compatible starting systems.

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🚀 ENGINEERED FOR SERIOUS ENGINE STARTING

The Fullriver HC28 is purpose-built for applications where rapid high-current discharge and reliable engine cranking are essential.

Its high-compression cell structure, pure lead grids and advanced thin-plate technology allow the battery to deliver substantial current over a short period, helping provide strong ignition performance under demanding conditions.

This makes the HC28 particularly well suited to compatible performance vehicles, racing applications, 4WDs, marine engines, powersports equipment and enthusiast builds.

⚠️ IMPORTANT: The HC28 is designed primarily for high-current engine starting and should not be treated as a dedicated deep-cycle battery.

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🔥 EXTREME CRANKING PERFORMANCE

The HC28 provides multiple cranking ratings to demonstrate its high-current capability across different operating conditions.

• Cold Cranking Amps: 410A CCA
• Cranking Amps / Marine Cranking Amps: 530A CA / MCA
• Hot Cranking Amps: 625A HCA
• Pulse Hot Cranking Amps: 925A PHCA
• Short Circuit Current: 1382A

Combined with an ultra-low internal resistance of approximately 5.0mΩ, the HC28 is engineered to release current rapidly when the starter motor demands maximum power.

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⚡ ULTRA-LOW INTERNAL RESISTANCE

The HC28 has an internal resistance of approximately 5.0mΩ.

Low internal resistance helps minimise voltage drop under heavy load and supports fast, efficient current delivery during engine cranking.

This characteristic is particularly important in performance and motorsport applications where rapid power delivery can be critical.

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🏁 BUILT FOR SHOCK, VIBRATION & HARSH CONDITIONS

The HC28 features a high-compression internal cell structure and heavy-duty battery case designed to withstand demanding vehicle environments.

This construction supports dependable performance in compatible racing, off-road, marine and powersports applications where vibration and movement can place additional stress on a battery.

It is built for applications where both serious cranking power and physical durability are required.

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🛡️ ADVANCED AGM CONSTRUCTION

The HC28 uses sealed Absorbed Glass Mat technology to retain electrolyte within the internal battery structure.

This non-spillable design provides maintenance-free operation under normal conditions and supports flexible installation in compatible applications.

The battery is housed in a durable ABS case with a UL94-HB flame-resistance rating.

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❄️ COLD-WEATHER PERFORMANCE

The HC28 is designed for operation across a temperature range of approximately -20°C to +50°C.

When operating below 0°C, maintaining the battery above 60% state of charge is recommended to support reliable cranking performance.

Correct battery charge becomes particularly important in colder conditions where engine-starting demands can increase.

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🔋 28AH CAPACITY & RESERVE POWER

The HC28 provides 28Ah capacity at the 20-hour rate and 24Ah at the 5-hour rate.

Reserve capacity is rated at approximately 48 minutes at a 25A load and approximately 6 minutes at a 75A load.

This combination of stored energy and high-current cranking performance makes the HC28 a capable starting battery for demanding compatible applications.

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🔌 CHARGING SPECIFICATIONS

Correct charging is essential for maintaining battery performance and service life.

Maximum charge current: 25% of C20 capacity

For a 28Ah C20 battery, this equates to approximately 7A maximum charge current.

Absorption voltage: 14.4V–14.7V

Float voltage: 13.5V–13.8V

Use a charger suitable for sealed AGM battery chemistry and the specified charging voltage range.

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📐 PRODUCT SPECIFICATIONS

Brand: Fullriver

Model: HC28

Battery type: High Crank AGM Starting Battery

Nominal voltage: 12V

Capacity at 20HR rate: 28Ah

Capacity at 5HR rate: 24Ah

Cold Cranking Amps: 410A CCA

Cranking Amps / Marine Cranking Amps: 530A CA / MCA

Hot Cranking Amps: 625A HCA

Pulse Hot Cranking Amps: 925A PHCA

Short circuit current: 1382A

Internal resistance: 5.0mΩ

Self-discharge at 25°C: ≤3% per month

Reserve capacity at 25A: 48 minutes

Reserve capacity at 75A: 6 minutes

Operating temperature: -20°C to +50°C

Terminal type: M8 button terminal

Recommended terminal torque: 62–80 in-lbs

Case material: ABS plastic

Flame-resistance rating: UL94-HB

Maximum charge current: Approximately 7A / 25% of C20

Absorption voltage: 14.4V–14.7V

Float voltage: 13.5V–13.8V

Primary application: High-current engine starting

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📏 DIMENSIONS & WEIGHT

Length: 165mm

Width: 176mm

Height: 125mm

Weight: Approximately 10.7kg / 23.59lb

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🚗 IDEAL APPLICATIONS

• Performance vehicles
• Racing and motorsport vehicles
• 4WD and off-road builds
• Marine engine-starting applications
• Motorcycles
• Powersports vehicles
• Classic and enthusiast vehicles
• Extreme racing applications
• High-performance vehicle builds
• Other compatible high-current starting systems

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📦 WHAT’S INCLUDED?

• 1 × Fullriver HC28 12V 28Ah 410CCA High Crank AGM Battery

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⚠️ FITMENT & COMPATIBILITY INFORMATION

Please confirm all electrical and physical specifications against your existing battery and vehicle requirements before purchasing.

Check the required:

• Battery voltage – 12V
• Battery technology – AGM
• Physical dimensions
• Terminal type – M8 button terminal
• Terminal orientation and polarity
• CCA requirement
• Charging-system compatibility
• Available installation space
• Engine-starting application

⚠️ IMPORTANT: Do not purchase based on dimensions alone. Battery technology, terminal layout, cranking requirements and charging-system compatibility must also match your application.

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❓ FREQUENTLY ASKED QUESTIONS

What type of battery is the Fullriver HC28?

The HC28 is a sealed 12V High Crank AGM battery designed primarily for high-current engine-starting applications.

What is the capacity of the HC28?

The battery is rated at 28Ah at the 20-hour rate and 24Ah at the 5-hour rate.

What is the Cold Cranking Amps rating?

The Fullriver HC28 is rated at 410CCA.

What other cranking ratings does the HC28 have?

The supplied specifications include 530A CA / MCA, 625A HCA and 925A PHCA.

What is the short circuit current?

The supplied short circuit current specification is 1382A.

What is the internal resistance?

The HC28 has an ultra-low specified internal resistance of approximately 5.0mΩ, supporting rapid high-current delivery.

What is the reserve capacity?

The HC28 provides approximately 48 minutes of reserve capacity at a 25A load and approximately 6 minutes at a 75A load.

Is the HC28 suitable for performance or racing vehicles?

Yes. It is designed for compatible performance and motorsport applications requiring serious cranking current and durable AGM construction.

Can the HC28 be used in a 4WD?

Yes, where the vehicle requires a compatible 12V AGM starting battery with matching physical dimensions, terminal configuration and cranking specifications.

Can the HC28 be used for marine starting?

It may be suitable for compatible marine engine-starting applications where the required voltage, dimensions, terminal configuration and cranking output match.

Is the HC28 suitable for motorcycles or powersports equipment?

It may be suitable for compatible motorcycles and powersports equipment where the physical size, weight, M8 terminal configuration and electrical specifications are appropriate.

Is the HC28 a deep cycle battery?

No. The HC28 is designed primarily for high-current engine starting rather than repeated deep-cycle discharge.

Is the battery maintenance-free?

Yes. Its sealed AGM construction means routine electrolyte top-ups are not required under normal operating conditions.

Is the battery non-spillable?

Yes. The sealed AGM construction is designed to be non-spillable under normal operating conditions.

Can the battery be mounted in different orientations?

The sealed AGM design allows greater installation flexibility than a conventional flooded battery. The battery must still be securely mounted in an orientation permitted by the manufacturer and suitable for the application.

What terminals does the HC28 use?

The battery uses M8 button terminals with a recommended terminal tightening torque of 62–80 in-lbs.

What are the HC28 dimensions?

The battery measures approximately 165mm long, 176mm wide and 125mm high.

How much does the battery weigh?

The HC28 weighs approximately 10.7kg.

What charger should I use?

Use a charger suitable for sealed AGM batteries with an absorption voltage of approximately 14.4V–14.7V and a float voltage of approximately 13.5V–13.8V.

What is the maximum charge current?

The specified maximum charge current is 25% of the battery’s 28Ah C20 capacity, which equates to approximately 7A.

Can the HC28 operate in cold weather?

Yes. Its specified operating temperature range is approximately -20°C to +50°C. When operating below 0°C, maintaining the battery above 60% state of charge is recommended.

How do I know if the HC28 will fit my vehicle?

Compare the battery’s 165 × 176 × 125mm dimensions, M8 button terminal configuration, 12V voltage, 410CCA rating and charging requirements with your existing battery and vehicle specifications before purchase.

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🏁 MAXIMUM STARTING POWER. PROVEN FULLRIVER PERFORMANCE.

Choose the Fullriver HC28 when your application demands serious cranking output, rapid current delivery and rugged AGM construction.

With 410CCA, 925A pulse hot-cranking capability, ultra-low 5.0mΩ internal resistance, high-compression cells and heavy-duty vibration-resistant construction, the HC28 is engineered for compatible performance, motorsport, 4WD, marine and powersports starting applications.

Upgrade to dependable high-current Fullriver AGM starting power.