12V 55Ah Deep Cycle AGM Battery (DC55-12)

🔋 FULLRIVER DC55-12 DEEP CYCLE AGM BATTERY

12V 55Ah Deep Cycle AGM Battery – 400CCA, 22NF Size, M6 Terminals & High Reserve Capacity

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

The Fullriver DC55-12 is a premium 12V 55Ah Deep Cycle AGM battery engineered for demanding cyclic, standby and auxiliary power applications where dependable energy storage and durability matter.

Part of Fullriver’s trusted DC Series, the DC55-12 uses robust internal construction, heavier plates and increased lead content to support repeated cycling, strong reserve capacity and long service life.

With 55Ah capacity, 400CCA starting support, 480A CA / MCA and reserve capacity ratings of 96 minutes at 25A and 21 minutes at 75A, the DC55-12 is a versatile option for compatible marine, caravan, RV, mobility, golf car, floor-cleaning, backup, solar 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.

⚡ 55Ah Capacity at 20HR Rate
Provides substantial stored energy for compatible equipment, mobility systems, battery banks and auxiliary electrical loads.

🚗 400CCA Starting Support
Provides strong cranking capability for compatible equipment requiring both deep cycle performance and engine-starting current.

⚡ 480A CA / MCA
Delivers additional cranking capability for compatible equipment and marine applications.

⏱️ 96-Minute Reserve Capacity at 25A
Provides substantial reserve-energy performance for compatible electrical loads.

💥 21-Minute Reserve Capacity at 75A
Demonstrates useful stored-energy capability even under significantly heavier discharge 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.

📦 22NF Group Size
Uses a practical 22NF case format for compatible equipment and auxiliary power installations.

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

🔌 M6 Terminal Connections
Provides secure electrical connections for compatible cyclic, auxiliary and starting systems.

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🔋 DEPENDABLE DEEP CYCLE PERFORMANCE

The Fullriver DC55-12 is designed primarily for applications where the battery is regularly discharged and recharged during normal operation.

Its 55Ah capacity at the 20-hour rate provides dependable stored energy for mobility equipment, auxiliary electrical systems, backup installations and other compatible cyclic applications.

Unlike a conventional starting battery designed mainly for short bursts of high current, the DC55-12 is built to provide sustained energy delivery while also offering useful starting capability where required.

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🚗 DEEP CYCLE POWER WITH STRONG CRANKING SUPPORT

In addition to its deep cycle capability, the DC55-12 provides 400CCA and 480A 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 DC55-12 is primarily a deep cycle AGM battery. Confirm the required cranking specification before selecting it for an engine-starting application.

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🔒 SEALED AGM TECHNOLOGY

The DC55-12 uses Absorbed Glass Mat technology to retain electrolyte within the internal battery structure.

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

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

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💪 FULLRIVER DC SERIES CONSTRUCTION

The DC55-12 forms part of Fullriver’s DC Series of deep cycle AGM batteries.

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

This heavy-duty design makes the DC55-12 well suited to applications requiring repeated energy delivery and reliable operation.

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⏱️ HIGH RESERVE CAPACITY

The DC55-12 provides strong reserve-energy performance across different load levels.

• Reserve capacity at 25A: 96 minutes
• Reserve capacity at 75A: 21 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 DC55-12 provides different capacity figures depending on the discharge rate.

• Capacity at 5HR rate: 45.0Ah
• Capacity at 20HR rate: 55.0Ah
• Capacity at 72HR rate: 58.0Ah
• Capacity at 100HR rate: 61.0Ah

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

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⚡ LOW INTERNAL RESISTANCE

The DC55-12 has a specified internal resistance of approximately 6.00mΩ.

Low internal resistance supports efficient power transfer and helps the battery deliver current effectively across compatible cyclic and short-duration cranking loads.

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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 moderate cranking support

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📐 PRODUCT SPECIFICATIONS

Brand: Fullriver

Model: DC55-12

Series: DC Series

Battery type: Deep Cycle AGM

Nominal voltage: 12V

Group size: 22NF

Capacity at 5HR rate: 45.0Ah

Capacity at 20HR rate: 55.0Ah

Capacity at 72HR rate: 58.0Ah

Capacity at 100HR rate: 61.0Ah

Cold Cranking Amps: 400A CCA

Cranking Amps / Marine Cranking Amps: 480A CA / MCA

Reserve capacity at 25A: 96 minutes

Reserve capacity at 75A: 21 minutes

Internal resistance: 6.00mΩ

Case material: ABS plastic

Flame-resistance rating: UL94-HB

Terminal type: M6

Weight: Approximately 17.6kg

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📏 DIMENSIONS

Length: 229mm

Width: 138mm

Case height: 208mm

Height including terminals: 212mm

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📦 WHAT’S INCLUDED?

• 1 × Fullriver DC55-12 12V 55Ah 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 – 22NF
• Physical dimensions
• Terminal type – M6
• 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 dimensions alone. 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 DC55-12?

The DC55-12 is a sealed 12V Deep Cycle AGM battery from Fullriver’s DC Series.

What is the battery capacity?

The battery is rated at 55.0Ah at the 20-hour discharge rate.

What are the other capacity ratings?

The supplied specifications list 45.0Ah at the 5-hour rate, 55.0Ah at the 20-hour rate, 58.0Ah at the 72-hour rate and 61.0Ah at the 100-hour rate.

What group size is the DC55-12?

The DC55-12 uses a 22NF-size battery case.

Is the DC55-12 a deep cycle battery?

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

Does the DC55-12 have a CCA rating?

Yes. The battery is rated at 400CCA.

What is the CA / MCA rating?

The supplied Cranking Amps / Marine Cranking Amps rating is 480A.

Can the DC55-12 be used for engine starting?

The battery provides 400CCA 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 DC55-12 provides approximately 96 minutes of reserve capacity at a 25A load and approximately 21 minutes at a 75A load.

Is the battery maintenance-free?

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

Is the DC55-12 non-spillable?

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

Can the DC55-12 be used in a caravan or RV?

Yes, where the system requires a compatible 12V AGM deep cycle battery with matching capacity, 22NF dimensions, M6 terminals and charging profile.

Is the DC55-12 suitable for marine applications?

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

Can it be used for mobility equipment?

Yes, where the equipment requires a compatible 12V 55Ah AGM battery with the correct 22NF dimensions, M6 terminals and charging requirements.

Can the DC55-12 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 profile match the equipment requirements.

Can the DC55-12 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 DC55-12 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 DC55-12 batteries be connected together?

Multiple batteries may be used in a correctly designed battery bank where the system voltage, charging equipment, cable sizing and battery configuration are appropriate. Batteries used together should be suitably matched.

What terminals does the DC55-12 use?

The battery uses M6 terminals.

What are the battery dimensions?

The DC55-12 measures approximately 229mm long, 138mm wide and 208mm high at the case, or 212mm high including the terminals.

How much does the DC55-12 weigh?

The DC55-12 weighs approximately 17.6kg.

What is the internal resistance?

The supplied internal resistance specification is approximately 6.00mΩ.

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 DC55-12 will replace my existing battery?

Compare the required voltage, AGM chemistry, 22NF group size, capacity, physical dimensions, M6 terminal configuration, charging profile and any cranking requirements with your existing battery and equipment specifications before purchase.

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🔋 HEAVY-DUTY DEEP CYCLE POWER WITH HIGH RESERVE CAPACITY

Choose the Fullriver DC55-12 when you need dependable cycling performance, strong reserve capacity and useful cranking support from a robust maintenance-free AGM battery.

With 55Ah capacity, 400CCA starting capability, 480A CA / MCA, 96-minute reserve capacity at 25A and trusted Fullriver DC Series construction, the DC55-12 is a versatile choice for compatible marine, caravan, mobility, equipment, backup, solar and auxiliary power applications.

Power your 12V system with dependable Fullriver deep cycle AGM performance.