12V 18Ah 265CCA High Crank AGM Battery (HC18)

⚡ FULLRIVER HC18 12V 18AH HIGH CRANK AGM BATTERY

265CCA High-Performance Starting Battery – B16CL-B Size, M6 Terminals & Heavy-Duty AGM Construction

🔥 Serious cranking power, rapid current delivery and durable AGM construction for demanding engine-starting applications.

The Fullriver HC18 is a high-performance 12V 18Ah High Crank AGM battery engineered to deliver powerful, reliable starting performance in demanding automotive, marine, motorsport and powersports applications.

With 265CCA, 350A CA / MCA, 440A HCA and an impressive 625A pulse cranking output, the HC18 is designed to deliver strong ignition power when high-current performance matters.

High-compression cells, pure lead grids, proven thin-plate technology and ultra-low internal resistance combine to provide rapid energy delivery, while the heavy-duty flame-resistant ABS case is built to withstand harsh operating environments.

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⚡ KEY FEATURES

🚀 265CCA High Cranking Output
Delivers strong cold-starting performance for compatible engines and demanding starting applications.

⚡ 350A CA / MCA
Provides substantial cranking performance for compatible automotive and marine starting systems.

🔥 440A Hot Cranking Amps
Provides powerful engine-starting capability under warmer operating conditions.

💥 625A Pulse Cranking Output
Delivers a strong short-duration current burst for demanding ignition requirements.

🔋 12V 18Ah AGM Battery
Combines useful stored capacity with high-current engine-starting capability.

⚡ Ultra-Low 7.0mΩ Internal Resistance
Supports rapid current delivery and efficient transfer of power to the starter system.

🏁 Shock & Vibration Resistant Construction
High-compression internal cells and a reinforced case are designed for demanding racing, off-road and powersports environments.

🛡️ Non-Spillable AGM Design
Sealed construction provides clean, maintenance-free operation in compatible installations.

🧯 Flame-Resistant ABS Case
Heavy-duty ABS battery housing with a UL94-HB flame-resistance rating.

🔧 Secure M6 Terminals
Provides robust electrical connections for compatible high-current starting systems.

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🚀 BUILT FOR HIGH-CURRENT ENGINE STARTING

The Fullriver HC18 is purpose-built for applications where strong engine cranking and rapid current delivery are essential.

Its high-compression cell design, pure lead grids and thin-plate technology help the battery deliver substantial current over a short period, providing dependable starting performance in compatible high-demand vehicles and equipment.

This makes the HC18 well suited to performance vehicles, 4WDs, marine engines, motorcycles, powersports equipment and other applications requiring a compact high-output starting battery.

⚠️ IMPORTANT: The HC18 is designed primarily for high-current engine starting and should not be treated as a dedicated deep-cycle battery.

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🔥 SUPERIOR CRANKING PERFORMANCE

The HC18 provides multiple cranking ratings to demonstrate its high-current capability across different operating conditions.

• Cold Cranking Amps: 265A CCA
• Cranking Amps / Marine Cranking Amps: 350A CA / MCA
• Hot Cranking Amps: 440A HCA
• Pulse Cranking Amps: 625A PHCA
• Short Circuit Current: 1765A

With an internal resistance of just 7.0mΩ, the HC18 is engineered to deliver power rapidly when the starter motor demands it.

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🏁 BUILT FOR SHOCK & VIBRATION RESISTANCE

The HC18 features a high-compression internal cell structure and heavy-duty reinforced battery case designed to withstand demanding vehicle environments.

This construction helps support reliable 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 users who require strong starting performance without compromising durability.

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🛡️ ADVANCED AGM CONSTRUCTION

The HC18 uses sealed Absorbed Glass Mat technology to retain electrolyte within the internal battery structure.

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

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

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❄️ COLD-WEATHER PERFORMANCE

The HC18 is designed for operation across a temperature range of approximately -20°C to +50°C.

When operating below 0°C, the battery should be maintained above 60% state of charge to support dependable starting performance.

Maintaining correct battery charge is particularly important in colder conditions, when cranking demands increase.

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🔋 18AH CAPACITY & RESERVE POWER

The HC18 provides 18Ah capacity at the 20-hour rate and 15.5Ah at the 5-hour rate.

Reserve capacity is rated at approximately 26 minutes at a 25A load.

This combination of stored capacity and high-current performance makes the HC18 a versatile starting battery for compatible demanding 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

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: HC18

Battery type: High Crank AGM Starting Battery

Group size / case size: B16CL-B

Nominal voltage: 12V

Capacity at 20HR rate: 18Ah

Capacity at 5HR rate: 15.5Ah

Cold Cranking Amps: 265A CCA

Cranking Amps / Marine Cranking Amps: 350A CA / MCA

Hot Cranking Amps: 440A HCA

Pulse Cranking Amps: 625A PHCA

Reserve capacity at 25A: 26 minutes

Internal resistance: 7.0mΩ

Short circuit current: 1765A

Self-discharge at 25°C: ≤3% per month

Operating temperature: -20°C to +50°C

Terminal type: M6

Recommended terminal torque: 40–55 in-lbs

Case material: ABS plastic

Flame-resistance rating: UL94-HB

Maximum charge current: 25% of C20 capacity

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: 170.2mm

Width: 99.1mm

Height: 175mm

Weight: Approximately 7.0kg / 15.43lb

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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
• Emergency response vehicles
• Other compatible high-current starting applications

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📦 WHAT’S INCLUDED?

• 1 × Fullriver HC18 12V 18Ah 265CCA 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
• B16CL-B case size
• Physical dimensions
• Terminal type – M6
• Terminal orientation
• CCA requirement
• Charging-system compatibility
• 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 HC18?

The HC18 is a sealed 12V High Crank AGM battery designed primarily for high-current engine-starting applications.

What is the battery capacity?

The HC18 is rated at 18Ah at the 20-hour rate and 15.5Ah at the 5-hour rate.

What is the Cold Cranking Amps rating?

The Fullriver HC18 is rated at 265CCA.

What other cranking ratings does the battery have?

The supplied specifications include 350A CA / MCA, 440A HCA and 625A PHCA.

What is the reserve capacity?

The HC18 provides approximately 26 minutes of reserve capacity at a 25A load.

What is the internal resistance?

The HC18 has a specified internal resistance of approximately 7.0mΩ, supporting rapid high-current delivery.

Is the HC18 suitable for performance or racing vehicles?

Yes. It is designed for compatible performance and motorsport applications requiring strong starting current, compact dimensions and vibration-resistant AGM construction.

Can the HC18 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 it be used for marine starting?

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

Is the HC18 suitable for motorcycles and powersports?

Yes. It may be suitable for compatible motorcycles and powersports equipment requiring the correct B16CL-B fitment and electrical specifications.

Is the HC18 a deep cycle battery?

No. The HC18 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 AGM construction is designed to be non-spillable under normal operating conditions.

What terminals does the HC18 use?

The battery uses M6 terminals with a recommended tightening torque of 40–55 in-lbs.

What are the battery dimensions?

The HC18 measures approximately 170.2mm long, 99.1mm wide and 175mm high.

How much does the battery weigh?

The battery weighs approximately 7.0kg.

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.

Can the HC18 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 HC18 will fit my vehicle?

Compare the B16CL-B case size, physical dimensions, M6 terminal configuration, voltage, CCA rating and charging requirements with your existing battery and vehicle specifications before purchase.

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🏁 SERIOUS STARTING POWER FOR DEMANDING APPLICATIONS

Choose the Fullriver HC18 when your application demands high cranking output, rapid current delivery and durable AGM construction.

With 265CCA, 625A pulse cranking capability, ultra-low 7.0mΩ internal resistance, high-compression cells and vibration-resistant construction, the HC18 is built for compatible performance, motorsport, 4WD, marine and powersports starting applications.

Start stronger with dependable high-current Fullriver AGM performance.