12V 35Ah 450CCA High Crank AGM Battery (HC35)

⚡ FULLRIVER HC35 12V 35AH HIGH CRANK AGM BATTERY

438CCA High-Performance Starting Battery – 975A PHCA, U1R Size & M6 Button Terminals

🔥 Powerful cranking performance, rapid current delivery and rugged AGM construction for demanding engine-starting applications.

The Fullriver HC35 is a high-performance 12V 35Ah High Crank AGM battery engineered for vehicles and equipment requiring strong, reliable starting power in demanding conditions.

Delivering 438CCA, 525A CA / MCA, 605A HCA and an impressive 975A pulse hot-cranking output, the HC35 provides serious starting capability for compatible cars, performance vehicles, 4WDs, off-road builds, marine engines, motorcycles, powersports equipment and competition applications.

High-compression cells, pure lead grids, advanced thin-plate technology and optimised internal resistance combine to provide rapid power delivery, while the heavy-duty flame-resistant ABS case helps withstand vibration, harsh terrain and challenging operating environments.

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⚡ KEY FEATURES

🚀 438CCA High Cranking Output
Provides strong cold-starting performance for compatible engines and demanding starting systems.

⚡ 525A CA / MCA
Delivers substantial cranking performance for compatible automotive and marine starting applications.

🔥 605A Hot Cranking Amps
Provides powerful engine-starting capability under warmer operating conditions.

💥 975A Pulse Hot Cranking Amps
Delivers an intense short-duration current burst for demanding ignition and starting requirements.

🔋 12V 35Ah AGM Battery
Combines useful stored capacity with high-current starting capability in a compact U1R battery format.

⚡ Optimised 9.4mΩ Internal Resistance
Supports rapid energy transfer and efficient high-current delivery when the starter system demands it.

🏁 High-Compression Internal Construction
Designed to support strong current output and dependable operation under demanding conditions.

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

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

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

🔧 M6 Button Terminals
Provides secure electrical connections for compatible high-current starting systems.

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🚀 ENGINEERED FOR HIGH-POWER ENGINE STARTING

The Fullriver HC35 is purpose-built for applications where rapid high-current discharge and dependable 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 reliable ignition performance under demanding loads.

This makes the HC35 well suited to compatible daily drivers, performance builds, 4WDs, off-road vehicles, marine engines, motorcycles, powersports equipment and competition vehicles.

⚠️ IMPORTANT: The HC35 is designed primarily for high-current engine starting and should not be treated as a dedicated deep-cycle battery.

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🔥 SERIOUS CRANKING PERFORMANCE

The HC35 provides multiple cranking ratings to demonstrate its high-current capability across different operating conditions.

• Cold Cranking Amps: 438A CCA
• Cranking Amps / Marine Cranking Amps: 525A CA / MCA
• Hot Cranking Amps: 605A HCA
• Pulse Hot Cranking Amps: 975A PHCA
• Short Circuit Current: 1332A

Combined with an internal resistance of approximately 9.4mΩ, the HC35 is engineered to deliver substantial current quickly when the starter motor requires it.

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⚡ FAST ENERGY DELIVERY

The HC35’s optimised internal resistance helps support efficient current transfer during high-load engine starting.

This assists with rapid power delivery and strong ignition performance in compatible applications where dependable cranking is critical.

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🏁 BUILT FOR SHOCK, VIBRATION & HARSH CONDITIONS

The HC35 features high-compression internal cells and a heavy-duty reinforced battery case designed for challenging operating 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 installations where strong starting performance and physical durability are both important.

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🛡️ ADVANCED AGM CONSTRUCTION

The HC35 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 housed in a durable ABS case with a UL94-HB flame-resistance rating.

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❄️ COLD-WEATHER PERFORMANCE

The HC35 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 increase.

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🔋 35AH CAPACITY & RESERVE POWER

The HC35 provides 35Ah capacity at the 20-hour rate and 30Ah at the 5-hour rate.

Reserve capacity is rated at approximately 50 minutes at a 25A load and approximately 11 minutes at a 75A load.

This combination of useful stored energy and high-current cranking capability makes the HC35 a powerful 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 35Ah C20 battery, this equates to approximately 8.75A 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: HC35

Battery type: High Crank AGM Starting Battery

Group size / case size: U1R

Nominal voltage: 12V

Capacity at 20HR rate: 35Ah

Capacity at 5HR rate: 30Ah

Cold Cranking Amps: 438A CCA

Cranking Amps / Marine Cranking Amps: 525A CA / MCA

Hot Cranking Amps: 605A HCA

Pulse Hot Cranking Amps: 975A PHCA

Short circuit current: 1332A

Internal resistance: 9.4mΩ

Self-discharge at 25°C: ≤3% per month

Reserve capacity at 25A: 50 minutes

Reserve capacity at 75A: 11 minutes

Operating temperature: -20°C to +50°C

Terminal type: M6 button terminal

Recommended terminal torque: 40–55 in-lbs

Case material: ABS plastic

Flame-resistance rating: UL94-HB

Maximum charge current: Approximately 8.75A / 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: 196mm

Width: 131mm

Height: 167mm

Weight: Approximately 12.1kg / 26.68lb

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🚗 IDEAL APPLICATIONS

• Cars and daily drivers
• Performance vehicles
• Racing and competition vehicles
• 4WD and off-road builds
• Marine engine-starting applications
• Motorcycles
• Powersports vehicles
• Classic and enthusiast vehicles
• High-vibration applications
• Other compatible high-current starting systems

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📦 WHAT’S INCLUDED?

• 1 × Fullriver HC35 12V 35Ah 438CCA 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
• Group size – U1R
• Physical dimensions
• Terminal type – M6 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, U1R 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 HC35?

The HC35 is a sealed 12V High Crank AGM battery designed primarily for high-current engine-starting applications.

What is the capacity of the HC35?

The battery is rated at 35Ah at the 20-hour rate and 30Ah at the 5-hour rate.

What is the Cold Cranking Amps rating?

The supplied technical specification for the Fullriver HC35 is 438CCA.

What other cranking ratings does the HC35 have?

The supplied specifications include 525A CA / MCA, 605A HCA and 975A PHCA.

What is the short circuit current?

The supplied short circuit current specification is 1332A.

What is the internal resistance?

The HC35 has a specified internal resistance of approximately 9.4mΩ.

What is the reserve capacity?

The HC35 provides approximately 50 minutes of reserve capacity at a 25A load and approximately 11 minutes at a 75A load.

Is the HC35 suitable for performance and racing vehicles?

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

Can the HC35 be used in a 4WD or off-road vehicle?

Yes, where the vehicle requires a compatible 12V AGM starting battery with matching dimensions, U1R terminal configuration and cranking specifications.

Can the HC35 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 HC35 suitable for motorcycles or powersports equipment?

It may be suitable for compatible motorcycles and powersports equipment where its dimensions, weight, terminal configuration and electrical specifications are appropriate.

Is the HC35 a deep cycle battery?

No. The HC35 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 provides 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 does U1R mean?

U1R refers to the battery’s case and terminal-layout configuration. The “R” designation is important because terminal polarity and position can differ from other U1 batteries, so the existing battery layout should be checked before purchase.

What terminals does the HC35 use?

The HC35 uses M6 button terminals with a recommended tightening torque of 40–55 in-lbs.

What are the HC35 dimensions?

The battery measures approximately 196mm long, 131mm wide and 167mm high.

How much does the battery weigh?

The HC35 weighs approximately 12.1kg.

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 charging current?

The specified maximum charge current is 25% of the battery’s 35Ah C20 capacity, which equates to approximately 8.75A.

Can the HC35 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 HC35 will fit my vehicle?

Compare the U1R case configuration, 196 × 131 × 167mm dimensions, M6 button terminals, 12V voltage, 438CCA rating and charging requirements with your existing battery and vehicle specifications before purchase.

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🏁 POWERFUL STARTING PERFORMANCE WHEN IT MATTERS MOST

Choose the Fullriver HC35 when your application demands strong engine cranking, dependable current delivery and rugged AGM construction.

With 438CCA, 975A pulse hot-cranking capability, 1332A short circuit current, high-compression cells and vibration-resistant construction, the HC35 is engineered for compatible automotive, racing, 4WD, marine and powersports starting applications.

Upgrade to dependable high-current Fullriver AGM starting performance.