12V 85Ah Deep Cycle AGM Battery (DC85-12)

🔋 FULLRIVER DC85-12 DEEP CYCLE AGM BATTERY

12V 85Ah Group 24 Deep Cycle AGM Battery – 510CCA, M8 Terminals & High Reserve Capacity

⚡ Heavy-duty deep cycle power with strong cranking support, high reserve capacity and maintenance-free AGM construction.

The Fullriver DC85-12 is a premium 12V 85Ah Deep Cycle AGM battery engineered for demanding cyclic, standby and auxiliary power applications where dependable stored energy, durability and consistent performance are essential.

Part of Fullriver’s trusted DC Series, the DC85-12 uses robust internal construction, heavier plates and increased lead content to support repeated cycling, greater reserve capacity and long service life.

With 85Ah capacity, 510CCA starting support, 600A CA / MCA, ultra-low 3.50mΩ internal resistance and reserve capacity ratings of 148 minutes at 25A and 34 minutes at 75A, the DC85-12 is a strong choice for compatible marine, caravan, RV, mobility, golf car, floor-cleaning, backup, solar, off-grid and auxiliary power systems.

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⚡ KEY FEATURES

🔋 12V Deep Cycle AGM Performance
Designed for dependable cyclic, standby and auxiliary power applications requiring reliable 12V energy storage.

⚡ 85Ah Capacity at 20HR Rate
Provides substantial stored energy for compatible marine, RV, mobility, equipment, battery bank and standby applications.

🚗 510CCA Starting Support
Provides strong cranking capability for compatible equipment requiring both deep cycle performance and engine-starting current.

⚡ 600A CA / MCA
Delivers additional cranking capability for compatible equipment and marine applications.

⏱️ 148-Minute Reserve Capacity at 25A
Provides substantial reserve-energy performance for compatible 12V electrical loads.

💥 34-Minute Reserve Capacity at 75A
Demonstrates strong stored-energy capability under significantly heavier discharge loads.

⚡ Ultra-Low 3.50mΩ Internal Resistance
Supports efficient energy transfer and strong current delivery across compatible cyclic and short-duration cranking loads.

🔁 Built for Repeated Cycling
Fullriver DC Series construction uses heavier plates and increased lead content to support reserve capacity and long cycle life.

🔒 Sealed AGM Construction
Absorbed Glass Mat technology provides clean, dependable and non-spillable operation under normal conditions.

🛠️ Maintenance-Free Design
No routine electrolyte top-ups are required under normal operating conditions.

📦 Group 24 Case Size
Uses a practical Group 24 battery format for compatible marine, RV, equipment and auxiliary power installations.

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

🔌 M8 Terminal Connections
Provides secure electrical connections for compatible cyclic, auxiliary and starting systems.

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🔋 DEPENDABLE DEEP CYCLE PERFORMANCE

The Fullriver DC85-12 is designed primarily for applications where the battery is regularly discharged and recharged during normal operation.

Its 85Ah capacity at the 20-hour rate provides substantial stored energy for auxiliary electrical systems, marine equipment, recreational vehicles, mobility equipment, backup installations and other compatible cyclic applications.

Unlike a conventional starting battery designed mainly for short bursts of high current, the DC85-12 is engineered to provide sustained energy delivery while still offering strong cranking support where required.

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🚗 DEEP CYCLE POWER WITH STRONG CRANKING SUPPORT

In addition to its deep cycle capability, the DC85-12 provides 510CCA and 600A CA / MCA.

This gives the battery useful short-duration starting capability for compatible equipment where both stored energy and cranking performance are required.

⚠️ IMPORTANT: The DC85-12 is primarily a deep cycle AGM battery. Confirm the required cranking specification before selecting it for an engine-starting application.

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⚡ ULTRA-LOW INTERNAL RESISTANCE

The DC85-12 has a specified internal resistance of approximately 3.50mΩ.

Low internal resistance supports efficient power transfer and helps minimise voltage drop under heavier electrical loads.

This contributes to dependable cyclic performance while also supporting the battery’s useful short-duration cranking capability.

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🔒 SEALED AGM TECHNOLOGY

The DC85-12 uses Absorbed Glass Mat technology to retain electrolyte within the internal battery structure.

This sealed construction provides maintenance-free operation and eliminates routine fluid top-ups under normal operating conditions.

Its non-spillable AGM design makes it a practical option for compatible mobile, marine, standby, recreational and auxiliary power installations.

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💪 FULLRIVER DC SERIES CONSTRUCTION

The DC85-12 forms part of Fullriver’s DC Series of deep cycle AGM batteries.

The series uses heavier plates, increased lead content and carefully engineered internal construction to support dependable cycling performance, high reserve capacity and service life.

This heavy-duty design makes the DC85-12 suitable for applications where repeated energy delivery and reliable long-term operation are required.

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⏱️ HIGH RESERVE CAPACITY

The DC85-12 provides substantial reserve-energy performance across different load levels.

• Reserve capacity at 25A: 148 minutes
• Reserve capacity at 75A: 34 minutes

These ratings provide an additional indication of the battery’s available stored energy alongside its amp-hour capacity.

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📊 MULTIPLE CAPACITY RATINGS

The DC85-12 provides different capacity figures depending on the discharge rate.

• Capacity at 5HR rate: 70.0Ah
• Capacity at 20HR rate: 85.0Ah
• Capacity at 72HR rate: 90.0Ah
• Capacity at 100HR rate: 94.0Ah

These ratings provide useful guidance for expected battery performance across different load and discharge conditions.

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🔧 SUITABLE APPLICATIONS

• Boat and marine auxiliary power systems
• Caravan and RV electrical systems
• Mobility and utility equipment
• Golf car auxiliary applications
• Floor cleaning machines
• Backup and standby power systems
• Deep cycle battery banks
• 12V auxiliary power systems
• Solar power systems
• Off-grid power installations
• Compatible cyclic equipment
• Applications requiring useful cranking support

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📐 PRODUCT SPECIFICATIONS

Brand: Fullriver

Model: DC85-12

Series: DC Series

Battery type: Deep Cycle AGM

Nominal voltage: 12V

Group size: 24

Capacity at 5HR rate: 70.0Ah

Capacity at 20HR rate: 85.0Ah

Capacity at 72HR rate: 90.0Ah

Capacity at 100HR rate: 94.0Ah

Cold Cranking Amps: 510A CCA

Cranking Amps / Marine Cranking Amps: 600A CA / MCA

Reserve capacity at 25A: 148 minutes

Reserve capacity at 75A: 34 minutes

Internal resistance: 3.50mΩ

Case material: ABS plastic

Flame-resistance rating: UL94-HB

Terminal type: M8

Weight: Approximately 25.1kg

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📏 DIMENSIONS

Length: 260mm

Width: 169mm

Case height: 211.2mm

Height including terminals: 217.2mm

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📦 WHAT’S INCLUDED?

• 1 × Fullriver DC85-12 12V 85Ah Deep Cycle AGM Battery

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⚠️ FITMENT & COMPATIBILITY INFORMATION

Please confirm the electrical, physical and charging requirements of your equipment before purchasing.

Check the required:

• Battery voltage – 12V
• Battery chemistry – AGM
• Battery capacity
• Group size – 24
• Physical dimensions
• Terminal type – M8
• Terminal orientation and polarity
• Charging profile
• Cranking-current requirement where applicable
• Available installation space
• Cyclic, standby or auxiliary application requirements

⚠️ IMPORTANT: Do not purchase based on capacity or group size alone. Physical dimensions, M8 terminal configuration, charging requirements, cranking needs and application suitability must also match your equipment.

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❓ FREQUENTLY ASKED QUESTIONS

What type of battery is the Fullriver DC85-12?

The DC85-12 is a sealed 12V Deep Cycle AGM battery from Fullriver’s DC Series.

What is the battery capacity?

The battery is rated at 85.0Ah at the 20-hour discharge rate.

What are the other capacity ratings?

The supplied specifications list 70.0Ah at the 5-hour rate, 85.0Ah at the 20-hour rate, 90.0Ah at the 72-hour rate and 94.0Ah at the 100-hour rate.

What group size is the DC85-12?

The DC85-12 uses a Group 24 battery case.

Is the DC85-12 a deep cycle battery?

Yes. It is designed primarily for compatible cyclic, standby and auxiliary deep cycle applications.

Does the DC85-12 have a CCA rating?

Yes. The battery is rated at 510CCA.

What is the CA / MCA rating?

The supplied Cranking Amps / Marine Cranking Amps rating is 600A.

Can the DC85-12 be used for engine starting?

The battery provides 510CCA of starting capability, but it is primarily designed as a deep cycle AGM battery. Confirm that its cranking output meets the specific requirements of your engine or equipment before use.

What is the reserve capacity?

The DC85-12 provides approximately 148 minutes of reserve capacity at a 25A load and approximately 34 minutes at a 75A load.

What is the internal resistance?

The supplied internal resistance specification is approximately 3.50mΩ.

Why is low internal resistance useful?

Lower internal resistance helps support efficient energy transfer and reduce voltage drop under heavier electrical loads, contributing to dependable cyclic performance and useful short-duration cranking output.

Is the DC85-12 maintenance-free?

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

Is the DC85-12 non-spillable?

Yes. Its sealed AGM construction is designed to provide non-spillable operation under normal conditions.

Can the DC85-12 be used in a caravan or RV?

Yes, where the system requires a compatible 12V AGM deep cycle battery with matching capacity, Group 24 dimensions, M8 terminals and charging requirements.

Is the DC85-12 suitable for marine applications?

It may be suitable for compatible marine auxiliary and cyclic power applications where its voltage, capacity, physical dimensions, terminal configuration and charging requirements match the system.

Can the DC85-12 be used for mobility equipment?

Yes, where the equipment requires a compatible 12V 85Ah AGM battery with matching dimensions, M8 terminal configuration and charging requirements.

Can the DC85-12 be used in a golf car application?

It may be suitable for compatible golf car auxiliary applications where its voltage, capacity, dimensions, terminal configuration and charging requirements match the equipment.

Can the DC85-12 be used in a floor cleaning machine?

Yes, where the machine requires a compatible 12V AGM deep cycle battery with matching physical and electrical specifications.

Can this battery be used for solar or off-grid power?

Yes. It may be suitable for compatible solar and off-grid systems designed around a 12V AGM battery with appropriate charging equipment.

Can the DC85-12 be used for backup or standby power?

Yes. The battery may be suitable for compatible backup and standby installations requiring a 12V AGM battery with the correct capacity and charging profile.

Can multiple DC85-12 batteries be connected together?

Multiple batteries may be used in a correctly designed battery bank where the system voltage, charger configuration, cable sizing and battery matching are appropriate.

What terminals does the DC85-12 use?

The DC85-12 uses M8 terminals. Confirm the terminal layout and polarity match your existing battery and cabling before purchase.

What are the battery dimensions?

The DC85-12 measures approximately 260mm long, 169mm wide and 211.2mm high at the case, or 217.2mm high including the terminals.

How much does the DC85-12 weigh?

The DC85-12 weighs approximately 25.1kg.

Is the battery case flame resistant?

Yes. The ABS plastic case has a supplied UL94-HB flame-resistance rating.

Do I need an AGM-compatible charger?

Use charging equipment suitable for sealed AGM battery chemistry and configured to the battery manufacturer’s recommended charging requirements.

How do I know if the DC85-12 will replace my existing battery?

Compare the required voltage, AGM chemistry, Group 24 case size, 260 × 169 × 217.2mm overall dimensions, M8 terminal configuration, polarity, charging profile and any cranking requirements with your existing battery and equipment specifications before purchase.

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🔋 HEAVY-DUTY 85AH DEEP CYCLE POWER WITH HIGH RESERVE CAPACITY

Choose the Fullriver DC85-12 when you need dependable cycling performance, substantial reserve capacity and useful starting support from a robust maintenance-free AGM battery.

With 85Ah capacity, 510CCA starting capability, 600A CA / MCA, 148-minute reserve capacity at 25A, ultra-low 3.50mΩ internal resistance and trusted Fullriver DC Series construction, the DC85-12 is a versatile choice for compatible marine, caravan, RV, mobility, equipment, backup, solar and off-grid applications.

Power your 12V system with dependable Fullriver Deep Cycle AGM performance.